RTTOV mw

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  • Author
    Posts
  • October 11, 2024 at 6:08 am #49929
    Lanhui SunLanhui Sun
    Participant

    Hello,

    I am trying to use RTTOV to simulate brightness temperatures in the microwave band. However, during the process, I noticed that when I modify the cloud ice in RTTOV-SCATT, despite a difference in the extinction coefficient of up to 0.03 km⁻¹ at the 183 GHz band between the two models, the simulated brightness temperatures only differ by 1E-3. I am unsure why this is happening.

    I used the RTTOV example file example_rttovscatt_fwd.F90 for the microwave radiation transfer calculation, and my RTTOV-SCATT options are set as follows. I am wondering if I am missing any options? For example, should I manually set the option like “cloud radiation” to “.TRUE.”?

    ! The rttov_options structure (opts) should be left with its default values.
! RTTOV-SCATT only allows access to a limited number of RTTOV options: these
! are set in the rttov_options_scatt structure (opts_scatt).

! For example:
opts_scatt % interp_mode = 1                    ! Set interpolation method
opts_scatt % config % verbose = .TRUE.          ! Enable printing of warnings
! Enable the use of foam fraction
opts%rt_mw%supply_foam_fraction = .TRUE.
opts%interpolation%addinterp = .TRUE.
opts%rt_ir%addclouds =.TRUE.
! See user guide for full list of RTTOV-SCATT options

!========== Interactive inputs == end ==============
!===================================================

    Thank you very much for your help.

    Best regards,
    Lanhui Sun

    October 11, 2024 at 5:09 pm #49930
    James HockingJames Hocking
    Keymaster

    Hi Lanhui Sun,

    You will need to provide an example profile so that I can try to replicate what you are seeing. You can use the rttov_print_profile and rttov_print_cld_profile subroutines (see Annex N in the user guide) to print out the profile and RTTOV-SCATT cloud profile structures. Also use rttov_print_opts_scatt to print out the RTTOV-SCATT options.

    Also, which sensor are you simulating?

    Note that the opts (rttov_options) structure is not passed to RTTOV-SCATT so you should not set any options in opts (they will not be used by RTTOV-SCATT anyway).

    If you can provide the information above and describe how you modified the optical properties I will try to replicate the results you are getting to understand what is going on.

    Best wishes,
    James

    October 12, 2024 at 6:01 am #49931
    Lanhui SunLanhui Sun
    Participant

    Hello, thank you very much for your response. Below is my output file with using the rttov_print_profile, rttov_print_cld_profile and rttov_print_opts_scatt, and I am simulating the FY3E-MWHS2E sensor.
    I understand your point now. I should use opts_scatt instead of opts to control RTTOV-SCATT, right? For example, writing opts_scatt%interp_mode = 2 in example_rttovscatt_fwd.F90. I’m not sure if my approach above is correct.

      -----------------
  Instrument mwhs2e  
  -----------------
  

RTTOV-SCATT options structure
General config options
  apply_reg_limits      F
  opdep13_gas_clip      T
  verbose               T
  do_checkinput         T
  fix_hgpl              T

RT options
  lusercfrac            F
  cc_threshold          0.0010
  pol_mode              1
  ice_polarisation      1.4000
  hydro_cfrac_tlad      T
  zero_hydro_tlad       F
  ozone_data            F
  use_t2m_opdep         T
  use_q2m               T
  use_tskin_eff         F
  addrefrac             T
  rad_down_lin_tau      T
  dtau_test             F
  fastem_version        6
  fastem3_rwd_fix       T
  supply_foam_fraction  F
  interp_mode           1
  reg_limit_extrap      T
  lgradp                F

  
  Profile            1

RTTOV profile structure
  id        
  date      1950/01/01
  time      00:00:00
  number of levels   98
  number of layers   97
Viewing conditions 
  zenangle         65.930
  azangle         171.940
  sunzenangle       0.000
  sunazangle        0.000
  elevation         0.000
  latitude        -68.850
  longitude      -119.273
  Earth magnetic field     0.000000E+00
  cos of Earth magnetic field and wave propagation   0.000000E+00
Black body cloud
  cloud top pressure  (hPa)   0.000000E+00
  cloud fraction (0 - 1)      0.000000E+00
Skin parameters
  surface type 0=land, 1=sea, 2=sea-ice       1
  water type  0=fresh water, 1=ocean water    1
  radiative skin temperature (K)             0.302120E+03
  snow_fraction (0 - 1)                      0.000000E+00
  soil_moisture (m^3/m^3)                    0.000000E+00
  salinity (%o)                              0.350000E+02
  foam fraction (0 - 1)                      0.000000E+00
  land/sea-ice surface parameters for fastem
              3.0000    5.0000   15.0000    0.1000    0.3000
2m air parameters
  surface pressure (hPa)   0.100797E+04
  temperature (K)          0.300936E+03
  water vapour (ppmv)      0.335118E+05
  ozone (ppmv)             0.000000E+00
  U wind component (m/s)   0.103293E+02
  V wind component (m/s)   0.474694E+01
  Wind fetch (m)           0.000000E+00

Gas units: ppmv wrt moist air
level Pressure           Temp     WV (ppmv) 
   1      1.0400  0.258000E+03   0.160000E+01
   2      1.1200  0.257000E+03   0.160000E+01
   3      1.2100  0.256000E+03   0.160000E+01
   4      1.3100  0.255000E+03   0.160000E+01
   5      1.4200  0.254000E+03   0.160000E+01
   6      1.5400  0.253000E+03   0.160000E+01
   7      1.6700  0.252000E+03   0.160000E+01
   8      1.8000  0.251000E+03   0.160000E+01
   9      1.9500  0.250000E+03   0.160000E+01
  10      2.1100  0.250000E+03   0.160000E+01
  11      2.2900  0.249000E+03   0.160000E+01
  12      2.4700  0.248000E+03   0.160000E+01
  13      2.6800  0.247000E+03   0.160000E+01
  14      2.9000  0.246000E+03   0.160000E+01
  15      3.1400  0.244000E+03   0.160000E+01
  16      3.3900  0.243000E+03   0.160000E+01
  17      3.6700  0.242000E+03   0.160000E+01
  18      3.9700  0.241000E+03   0.160000E+01
  19      4.3000  0.240000E+03   0.160000E+01
  20      4.6500  0.239000E+03   0.160000E+01
  21      5.0400  0.237000E+03   0.160000E+01
  22      5.4500  0.236000E+03   0.160000E+01
  23      5.9000  0.235000E+03   0.160000E+01
  24      6.3800  0.234000E+03   0.160000E+01
  25      6.9100  0.233000E+03   0.160000E+01
  26      7.4800  0.232000E+03   0.160000E+01
  27      8.0900  0.230000E+03   0.160000E+01
  28      8.7500  0.229000E+03   0.160000E+01
  29      9.4700  0.228000E+03   0.160000E+01
  30     10.2000  0.227000E+03   0.160000E+01
  31     11.0000  0.226000E+03   0.160000E+01
  32     12.0000  0.225000E+03   0.160000E+01
  33     12.9000  0.224000E+03   0.185000E+01
  34     14.0000  0.223000E+03   0.213000E+01
  35     15.2000  0.222000E+03   0.233000E+01
  36     16.4000  0.221000E+03   0.255000E+01
  37     17.8000  0.220000E+03   0.275000E+01
  38     19.2000  0.219000E+03   0.286000E+01
  39     20.8000  0.218000E+03   0.291000E+01
  40     22.5000  0.216000E+03   0.292000E+01
  41     24.4000  0.215000E+03   0.288000E+01
  42     26.4000  0.214000E+03   0.280000E+01
  43     28.5000  0.213000E+03   0.271000E+01
  44     30.9000  0.212000E+03   0.268000E+01
  45     33.4000  0.211000E+03   0.272000E+01
  46     36.2000  0.211000E+03   0.273000E+01
  47     39.2000  0.211000E+03   0.274000E+01
  48     42.4000  0.211000E+03   0.244000E+01
  49     45.9000  0.211000E+03   0.235000E+01
  50     49.6000  0.212000E+03   0.261000E+01
  51     53.7000  0.210000E+03   0.235000E+01
  52     58.1000  0.208000E+03   0.275000E+01
  53     62.9000  0.206000E+03   0.300000E+01
  54     68.0000  0.204000E+03   0.323000E+01
  55     73.6000  0.201000E+03   0.418000E+01
  56     79.7000  0.199000E+03   0.446000E+01
  57     86.2000  0.197000E+03   0.426000E+01
  58     93.3000  0.195000E+03   0.397000E+01
  59    101.0000  0.194000E+03   0.386000E+01
  60    109.0000  0.195000E+03   0.470000E+01
  61    118.0000  0.197000E+03   0.621000E+01
  62    127.0000  0.199000E+03   0.890000E+01
  63    138.0000  0.202000E+03   0.137000E+02
  64    149.0000  0.205000E+03   0.228000E+02
  65    162.0000  0.209000E+03   0.390000E+02
  66    175.0000  0.214000E+03   0.669000E+02
  67    189.0000  0.218000E+03   0.115000E+03
  68    205.0000  0.223000E+03   0.195000E+03
  69    222.0000  0.228000E+03   0.317000E+03
  70    240.0000  0.232000E+03   0.503000E+03
  71    260.0000  0.237000E+03   0.785000E+03
  72    281.0000  0.241000E+03   0.117000E+04
  73    304.0000  0.246000E+03   0.165000E+04
  74    329.0000  0.250000E+03   0.211000E+04
  75    357.0000  0.254000E+03   0.255000E+04
  76    386.0000  0.258000E+03   0.299000E+04
  77    418.0000  0.262000E+03   0.385000E+04
  78    452.0000  0.265000E+03   0.532000E+04
  79    490.0000  0.268000E+03   0.700000E+04
  80    530.0000  0.271000E+03   0.925000E+04
  81    573.0000  0.274000E+03   0.112000E+05
  82    615.0000  0.277000E+03   0.126000E+05
  83    657.0000  0.280000E+03   0.135000E+05
  84    697.0000  0.282000E+03   0.144000E+05
  85    735.0000  0.285000E+03   0.150000E+05
  86    771.0000  0.287000E+03   0.159000E+05
  87    804.0000  0.289000E+03   0.174000E+05
  88    834.0000  0.291000E+03   0.195000E+05
  89    861.0000  0.292000E+03   0.212000E+05
  90    886.0000  0.294000E+03   0.223000E+05
  91    908.0000  0.295000E+03   0.231000E+05
  92    927.0000  0.296000E+03   0.241000E+05
  93    944.0000  0.297000E+03   0.262000E+05
  94    958.0000  0.297000E+03   0.278000E+05
  95    970.0000  0.298000E+03   0.287000E+05
  96    981.0000  0.299000E+03   0.292000E+05
  97    990.0000  0.300000E+03   0.295000E+05
  98    998.0000  0.300000E+03   0.298000E+05

Clouds
  liquid cloud scheme         -1
  clw to eff diameter param    1
  ice cloud scheme            -1
  iwc to eff diameter param   -1
layer Pressure  top  bottom  Cloud (kg/kg)                                                                               cfrac       clwde (um)    icede (um)
    1     1.0400     1.1200    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    2     1.1200     1.2100    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    3     1.2100     1.3100    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    4     1.3100     1.4200    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    5     1.4200     1.5400    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    6     1.5400     1.6700    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    7     1.6700     1.8000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    8     1.8000     1.9500    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
    9     1.9500     2.1100    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   10     2.1100     2.2900    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   11     2.2900     2.4700    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   12     2.4700     2.6800    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   13     2.6800     2.9000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   14     2.9000     3.1400    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   15     3.1400     3.3900    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   16     3.3900     3.6700    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   17     3.6700     3.9700    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   18     3.9700     4.3000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   19     4.3000     4.6500    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   20     4.6500     5.0400    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   21     5.0400     5.4500    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   22     5.4500     5.9000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   23     5.9000     6.3800    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   24     6.3800     6.9100    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   25     6.9100     7.4800    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   26     7.4800     8.0900    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   27     8.0900     8.7500    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   28     8.7500     9.4700    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   29     9.4700    10.2000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   30    10.2000    11.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   31    11.0000    12.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   32    12.0000    12.9000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   33    12.9000    14.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   34    14.0000    15.2000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   35    15.2000    16.4000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   36    16.4000    17.8000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   37    17.8000    19.2000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   38    19.2000    20.8000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   39    20.8000    22.5000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   40    22.5000    24.4000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   41    24.4000    26.4000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   42    26.4000    28.5000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   43    28.5000    30.9000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   44    30.9000    33.4000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   45    33.4000    36.2000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   46    36.2000    39.2000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   47    39.2000    42.4000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   48    42.4000    45.9000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   49    45.9000    49.6000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   50    49.6000    53.7000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   51    53.7000    58.1000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   52    58.1000    62.9000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   53    62.9000    68.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   54    68.0000    73.6000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   55    73.6000    79.7000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   56    79.7000    86.2000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   57    86.2000    93.3000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   58    93.3000   101.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   59   101.0000   109.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   60   109.0000   118.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   61   118.0000   127.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   62   127.0000   138.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   63   138.0000   149.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   64   149.0000   162.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   65   162.0000   175.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   66   175.0000   189.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   67   189.0000   205.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   68   205.0000   222.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   69   222.0000   240.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   70   240.0000   260.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   71   260.0000   281.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   72   281.0000   304.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   73   304.0000   329.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   74   329.0000   357.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   75   357.0000   386.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   76   386.0000   418.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   77   418.0000   452.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   78   452.0000   490.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   79   490.0000   530.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   80   530.0000   573.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   81   573.0000   615.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   82   615.0000   657.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   83   657.0000   697.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   84   697.0000   735.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   85   735.0000   771.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   86   771.0000   804.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   87   804.0000   834.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   88   834.0000   861.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   89   861.0000   886.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   90   886.0000   908.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   91   908.0000   927.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   92   927.0000   944.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   93   944.0000   958.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   94   958.0000   970.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   95   970.0000   981.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   96   981.0000   990.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000
   97   990.0000   998.0000    0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00      0.000000      0.000000      0.000000

RTTOV-SCATT cloud profile structure
  number of levels   98
  user average cloud fraction (0 - 1)      0.000000E+00
  hydro units (0=default=kg/kg; 1,2=kg/m2/s)   0   0   0   0   0
level Pressure  top  bottom    hydro          hydro          hydro          hydro          hydro          frac       
    1     0.0000     1.0800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    2     1.0800     1.1700    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    3     1.1700     1.2600    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    4     1.2600     1.3700    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    5     1.3700     1.4800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    6     1.4800     1.6000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    7     1.6000     1.7300    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    8     1.7300     1.8800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
    9     1.8800     2.0300    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   10     2.0300     2.2000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   11     2.2000     2.3800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   12     2.3800     2.5800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   13     2.5800     2.7900    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   14     2.7900     3.0200    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   15     3.0200     3.2600    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   16     3.2600     3.5300    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   17     3.5300     3.8200    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   18     3.8200     4.1400    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   19     4.1400     4.4800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   20     4.4800     4.8500    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   21     4.8500     5.2400    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   22     5.2400     5.6700    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   23     5.6700     6.1400    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   24     6.1400     6.6500    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   25     6.6500     7.1900    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   26     7.1900     7.7800    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   27     7.7800     8.4200    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   28     8.4200     9.1100    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   29     9.1100     9.8600    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   30     9.8600    10.6000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   31    10.6000    11.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   32    11.5000    12.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   33    12.5000    13.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   34    13.5000    14.6000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   35    14.6000    15.8000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   36    15.8000    17.1000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   37    17.1000    18.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   38    18.5000    20.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   39    20.0000    21.7000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   40    21.7000    23.4000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   41    23.4000    25.4000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   42    25.4000    27.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   43    27.5000    29.7000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   44    29.7000    32.2000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   45    32.2000    34.8000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   46    34.8000    37.7000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   47    37.7000    40.8000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   48    40.8000    44.1000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   49    44.1000    47.7000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   50    47.7000    51.7000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   51    51.7000    55.9000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   52    55.9000    60.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   53    60.5000    65.5000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   54    65.5000    70.8000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   55    70.8000    76.7000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   56    76.7000    83.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   57    83.0000    89.8000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   58    89.8000    97.1000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   59    97.1000   105.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   60   105.0000   113.0000    0.000000E+00   0.163000E-24   0.000000E+00   0.000000E+00   0.175000E-12   0.000000E+00
   61   113.0000   123.0000    0.000000E+00   0.610000E-21   0.000000E+00   0.000000E+00   0.908000E-11   0.000000E+00
   62   123.0000   133.0000    0.000000E+00   0.290000E-21   0.000000E+00   0.000000E+00   0.105000E-06   0.000000E+00
   63   133.0000   144.0000    0.000000E+00   0.872000E-16   0.000000E+00   0.000000E+00   0.150000E-06   0.101000E-01
   64   144.0000   156.0000    0.000000E+00   0.143000E-10   0.000000E+00   0.000000E+00   0.345000E-07   0.000000E+00
   65   156.0000   168.0000    0.000000E+00   0.835000E-07   0.000000E+00   0.000000E+00   0.168000E-05   0.288000E+00
   66   168.0000   182.0000    0.000000E+00   0.603000E-06   0.000000E+00   0.000000E+00   0.630000E-05   0.100000E+01
   67   182.0000   197.0000    0.000000E+00   0.236000E-05   0.000000E+00   0.000000E+00   0.252000E-04   0.100000E+01
   68   197.0000   213.0000    0.000000E+00   0.772000E-05   0.000000E+00   0.000000E+00   0.584000E-04   0.100000E+01
   69   213.0000   231.0000    0.000000E+00   0.169000E-04   0.000000E+00   0.000000E+00   0.101000E-03   0.100000E+01
   70   231.0000   250.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   71   250.0000   271.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   72   271.0000   293.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   73   293.0000   317.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   74   317.0000   343.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   75   343.0000   371.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   76   371.0000   402.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   77   402.0000   435.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   78   435.0000   471.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   79   471.0000   510.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   80   510.0000   551.0000    0.000000E+00   0.396000E-32   0.000000E+00   0.000000E+00   0.231000E-33   0.000000E+00
   81   551.0000   594.0000    0.129000E-37   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   82   594.0000   636.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   83   636.0000   677.0000    0.399000E-37   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   84   677.0000   716.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   85   716.0000   753.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   86   753.0000   787.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   87   787.0000   819.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   88   819.0000   848.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   89   848.0000   874.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   90   874.0000   897.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   91   897.0000   917.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   92   917.0000   935.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   93   935.0000   951.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   94   951.0000   964.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   95   964.0000   976.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   96   976.0000   986.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   97   986.0000   994.0000    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00
   98   994.0000  1007.9650    0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00   0.000000E+00

CHANNELS PROCESSED FOR SAT fy3        5
        1       2       3       4       5       6       7       8       9      10
       11      12      13      14      15
  
 CALCULATED BRIGHTNESS TEMPERATURES (K):
  280.639 221.928 211.799 207.857 214.764 226.296 259.923 265.379 273.868 271.007
  231.533 239.152 246.772 252.867 259.623
  
 CALCULATED SURFACE EMISSIVITIES:
    0.647   0.557   0.557   0.557   0.557   0.557   0.557   0.557   0.557   0.710
    0.600   0.600   0.600   0.600   0.600

    Thank you again for your help.

    October 14, 2024 at 4:58 pm #49935
    James HockingJames Hocking
    Keymaster

    Hi Lanhui Sun,

    Thanks for providing the profile and option information. I can replicate the brightness temperatures from your simulation in the RTTOV test suite so your code is working correctly.

    How exactly did you then modify the input profile? You mention changing cloud ice, but in which level and by how much?

    Best wishes,
    James

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