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box.
26 Feb 2016
|
AAPP update 7.12 has been released.
Changes include updates new options for AVHRR processing and some bug fixes. More information is available on the AAPP pages.
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17 December 2015 |
The first public version of the Pencil beam Wind Processor (PenWP) has been released.
PenWP generates surface winds from backscatter data from the SeaWinds (on QuikSCAT or ADEOS-II), OSCAT (on Oceansat-2), HSCAT (on HY-2A) and RapidScat (on the International Space Station) scatterometer instruments.
It replaces the existing wind processors for SeaWinds (SDP) and OSCAT (OWDP) and is designed as a generic wind processor for all existing and future pencil beam Ku-band scatterometer instruments.
See the Scatterometer pages for more information.
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26 November 2015 |
AAPP update 7.11 has been publicly released.
Changes include updates to the hdf5 converters and inclusion of NEDT information in the processing of ATOVS. More information is available on the AAPP pages.
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30 October 2015
|
Radiance Simulator v1.1 has been publicly released.
Changes from the previous release, v1.0, include
support for HDF5 RTTOV coefficient files and 32-bit Met Office Fieldsfiles and improved capability to process large numbers of profiles/channels. There is now also an option to change the default zenith angle for model grid runs. The release also features multiple other enhancements and bugfixes.
See the Radiance Simulator pages for more information.
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29 September 2015 |
RTTOV v11.3 has been publicly released.
Changes from the previous release, v11.2, include
new Python and C++ interfaces to RTTOV,
updates to the RTTOV GUI (including new 1DVar functionality),
an option to specify input units for gas profiles,
various improvements in the treatment of surfaces and
new interactive scripts to compile RTTOV and download coefficients as well as other enhancements and bug-fixes.
See the RTTOV pages for more information.
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15 June 2015
|
AAPP update 7.10 has been released.
The main change is the addition of VIIRS to CrIS mapping software.
More information is available on the AAPP pages.
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9 June 2015 |
The first public beta version of the Pencil beam Wind Processor (PenWP) is ready for release by the EUMETSAT Numerical Weather Prediction SAF. PenWP generates surface winds from backscatter data from the SeaWinds (on QuikSCAT or ADEOS-II), OSCAT (on Oceansat-2), HSCAT (on HY-2A) and RapidScat (on the International Space Station) scatterometer instruments.
We invite you to become a beta user of the PenWP software package. If you are interested, please email.
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24 February 2015
|
AAPP update 7.9 has been released.
This includes a new version of the MAIA4 cloud mask for VIIRS.
A new feature is that MAIA4 can accept model background fields from the GFS model - available via the internet.
More information is available on the AAPP pages.
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|
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08 December 2014 |
AAPP update 7.8 has been released.
This includes tools for converting AAPP binary files to HDF5 format, which was a request from the ITSC-19 conference Direct Broadcast Technical Subgroup.
More information is available on the AAPP pages.
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17 November 2014
|
Radiance Simulator 1.0 has been released.
This new NWPSAF deliverable is designed to provide a flexible interface to NWP model fields in order to enable the generation of
simulated observations for all instruments supported by RTTOV in a straightforward way.
The Radiance Simulator is designed to work specifically with datasets from NWP models,
either analysis fields or short-range forecasts.
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17 November 2014 |
RTM - A new ECMWF diverse profiles dataset has been released.
The profiles are specified on a 137-level grid extending from surface up to 0.01 hPa.
The database is divided in to five subsets focussing on diverse sampling of temperature, specific humidity, ozone mixing ratio, cloud condensates and precipitation.
The dataset is available on the RT modelling pages.
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02 October 2014 |
SDP version 2.2 has been released.
Compared to the previous version 2.1, the new version includes improvements in the Quality Control and improvement of the wind retrieval at low wind speeds.
It uses the NSCAT-4 Geophysical Model Function for reduced wind speed bias at high wind speeds.
SDP v2.2 is being used to create the climate data record for QuikSCAT in the OSI SAF.
See the scatterometer pages for more information.
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27 August 2014
|
AAPP update 7.7 has been released.
This includes tools for working with sensor data record files from the new MWTS2 and MWHS2 instruments on Feng-Yun 3C.
More information is available on the AAPP pages.
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26 August 2014 |
NWPSAF 1D-Var v1.0 has been released.
This new version contains the merged capabilities of the now retired Met Office, SSMIS and ECMWF 1D-Var schemes.
There is also now a graphical user interface (GUI) which produces plots of retrieval results and makes the installation and running of the software more straightforward.
Further details can be found on the NWPSAF 1D-Var page
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17 June 2014
|
RTTOV v11.2 has been publicly released.
Changes from the previous release v11.1 include
a GUI which allows RTTOV direct and K models to be run and results to be visualised,
a new MW sea surface emissivity option (FASTEM-6) which has a much improved azimuthal dependence over previous versions,
an update to the Baran ice particle optical property parameterisation for IR cloudy simulations,
new options for the internal interpolator which eliminate artificial features in Jacobians due to the interpolation scheme,
optimisation of PC-RTTOV, IR cloud and aerosol simulations and solar sea surface reflectance calculations as well as other enhancements and bug-fixes.
See the RTTOV pages for more information.
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02 Jun 2014 |
The NWP SAF website has moved! Please update your bookmarks. The new site is located at http://nwpsaf.eu. If you require assistance or have any suggestions for the new site, please contact the helpdesk.
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24 Feb 2014
|
AAPP update 7.6 has been released. This includes updates to the "MAIA" cloud mask and improved tools for working with NOAA/CLASS files. More information is available on the AAPP pages.
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11 February 2014 |
AWDP v2.3 was publicly released on 11th February 2014. This version can handle the latest Metop-A ASCAT calibration (level 1 version 9.02). More information is available on the Scatterometer web pages.
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7 Oct 2013
|
A technical report comparing Atmospheric Motion Vectors (AMVs) over the Indian Ocean region has been published on the AMV investigations webpage.
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13 Sept 2013
|
OPS-LRS version 7-0 has been released. This is the latest version of the IASI level 1 processor released by CNES. It provides compatibility with the latest IASI instrument configuration files, and fixes an occasional processing failure due to array bounds overflow. More information is available on the AAPP pages.
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31 July 2013
|
Met Office 1D-Var v3.5 has been released. This new version adds support for the RTTOV v11 radiative transfer model. Further details can be found on the Met Office 1D-Var page.
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16 July 2013
|
AAPP update 7.5 has been released. The main change is the addition of the "MAIA v4" package from Météo-France, to generate a cloud mask for VIIRS. More information is available on the AAPP pages.
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9 July 2013 |
AWDP v2.2 was publicly released on 9th July 2013. This version has full functionality to handle Metop-B data, including the latest calibration tables. Moreover it is able to handle the new format of the ASCAT full resolution (so-called SZF) files. More information is available on the Scatterometer web pages.
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3 June 2013
|
RTTOV v11.1 has been publicly released. Changes from the previous release v10.2 include the capability to simulate visible and near-infrared channels, a global land surface bi-directional reflectance atlas, the option to apply a bias correction for non-local thermodynamic equilibrium effects, two new aerosol particle types (for volcanic ash and Asian dust), a new ice cloud parameterisation scheme for cloudy infrared simulations, the option to specify optical properties explicitly for infrared scattering calculations, PC calculations for both clear and cloudy profiles over sea surfaces, the ability to read/write coefficient files in HDF5 format, and code optimisation, in particular for the K model and the IR emissivity atlas. See the RTTOV pages for more information.
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9 April 2013 |
The OSCAT Wind Data Processor (OWDP) version 1.1 has been released. This is the first public release of the wind data processor for the OSCAT instrument onboard Oceansat-2. OWDP generates surface winds from OSCAT Normalized Radar Cross Section data. Updated technical reports on NWP SAF scatterometer software have also been added to the website. More information is available on the Scatterometer web pages.
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14 December 2012
|
AAPP update 7.4 has been
released. The release includes Metop-B
updates, improvements to the tools for
handling Multi Mission Administration
Messages and refinements to the processing
of NPP. More information is available on
the AAPP pages.
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10 October 2012
|
AAPP update 7.3 has been
released. The release includes updated
Metop-B data files, modifications to the
handling of IASI principal components, BUFR
encode/decode for the microwave instruments
on FY-3A/B and modifications to the
processing of NPP data. More information is
available on the AAPP
pages.
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27 July 2012
|
AAPP update 7.2 and OPS-LRS version V6-0+p12 have been released.
The AAPP update includes modifications to the processing of ATMS on Suomi-NPP and handling of the new EUMETSAT Multi-Mussion Administration Messages (MMAM).
The new version of OPS-LRS incorporates the latest updates from CNES.
More information is available on the AAPP pages.
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11 May 2012
|
Met Office 1D-Var v3.4 has been
released. This new version adds support for
the RTTOV v10 radiative transfer model and
the addition of SSMIS liquid water retrieval
capability. Further details can be found on
the Met Office
1D-Var page.
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18 April 2012
|
New monitoring pages showing plots
of SSMIS
and
AIRS radiances vs
Met Office global NWP are now available. Links
to additional external monitoring sites have
also been added to
the monitoring links
webpage.
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2 March 2012
|
EUMETSAT has extended the duration of
support services to licensees of NWP SAF
software. For further details see
the Software
Request Forms page.
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2 March 2012
|
AAPP version 7.1 has been
released. The new version introduces
capability to process Sensor Data Record (SDR)
data from the Advanced Technology Microwave
Sounder (ATMS) and Cross-track Infrared
Sounder (CrIS) on the Suomi NPP satellite, as
well as bug fixes and other enhancements. New
users, and existing users of AAPP v6, can
access the package by
registering
here. More information can be found on
the AAPP pages.
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22 February 2012
|
A new release of the ECMWF diverse
profile database has been made
available to users. The new database makes
use of concentration data of carbon dioxide,
methane and five different types of
aerosols, as retrieved from short-range
forecasts of the Monitoring Atmospheric
Composition and Climate (MACC) project.
Additionally, temperature, specific humidity
and ozone data are sampled. In total of
40,000 vertical profiles, divided in ten
subsets, are provided in a vertical grid of
60 levels. For further details see the
RTTOV web
page.
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18th January 2012
|
RTTOV update v10.2 has been
released. The update fixes a number of bugs
and includes improvements to the new
FASTEM-4 microwave sea surface emissivity
model, the ability to specify ice particle
effective diameter explicitly in the input
profile for infrared cloudy simulations, and
a number of code optimisations. More
information is available via
the RTTOV v10
web page.
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2 December 2011
|
Version 1.3 of the ECMWF Cloud/Aerosol
Detection Software has been
released. The update introduces capability to
process data from the Cross-track Infrared
Sounder (CrIS), onboard the NPP
satellite. Additionally, a couple of bugs are
fixed and the implementation of the cross-band
option is modified towards a more conservative
approach. More information can be found on the
IR aerosol
and cloud detection software webpage.
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3 August 2011
|
AWDP version
2.1 has been released. The
backscatter correction used in the wind
processing has been adapted to the new level 1
processor version 7.4. Moreover, some bugs
and other issues have been solved. See the scatterometer pages
for more information.
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28 February 2011
|
A
workshop on scatterometer data
assimilation will be organized by
the NWP SAF on 14 April 2011 at EUMETSAT
premises in Darmstadt. The goal of the
workshop is to provide NWP data assimilation
colleagues with insight into the main relevant
characteristics of the scatterometer data,
provide guidance for data assimilation and
collect NWP user requirements for the
scatterometer wind observation operator.
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18 February 2011
|
NWP SAF
forums have been launched for the RTTOV
and AAPP software packages, enabling online discussions between
users and developers.
|
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20 January 2011
|
RTTOV
v10 has been publicly
released. Changes from the previous release v9.3
include addition of land surface emissivity
atlases for IR and MW, capability to simulate
Principal Components for AIRS and IASI, update
of FASTEM ocean emissivity model, addition of
Zeeman effect for SSMIS and AMSU-A high peaking
channels and improved optical depth calculations
(more levels and up to date spectroscopic data)
for IR and MW sensors. See the
RTTOV pages for more information.
|
|
1 December 2010
|
AWDP v2.0 has been publicly
released. Changes from the previous release
v1.1 include validation for 12.5-km winds and
a coastal wind retrieval capability. The ECMWF
GRIB API library is used now instead of
GRIBEX. See the
scatterometer pages for more information.
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|
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24 November 2010
|
SDP v2.1 has been publicly
released. The main difference from the
previous version is that the OSI SAF sea ice model
and screening are now operational. See the scatterometer
pages for more information.
|
|
17 November 2010
|
The NWP
SAF scatterometer monitoring site has been
updated to include an archive of monthly
monitoring plots. The new archive hosts a
variety of monitoring data for ASCAT, ERS-2
and WindSat with an easy-to-use interface for
switching between different months.
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|
11 November 2010
|
AAPP update v6.14 has been
released. The update includes modifications to
the processing of Principal Component
compressed IASI data, following the start of a
trial dissemination via EUMETCast. Click here for further details of
AAPP.
|
|
17 June 2010
|
AAPP update v6.13 has been
released. The update includes routine
calibration updates for NOAA-19 and MetOp,
portability fixes and tools to work with the
AVHRR cloud mask and with archived level 1c
ATOVS data. Also, an updated version of the
OPS-LRS User Manual is available on the AAPP
web page. Click here for
further details of AAPP.
|
|
11 May 2010
|
The scatterometer
monitoring pages have undergone a
significant update. Dedicated monitoring pages
are now available for WindSat and ERS-2, to go
alongside the existing ASCAT page. A whole new
suite of plots are also being produced for the
Met Office global and NAE (North Atlantic
European) regional models including map,
vector, density and wind vector cell
statistics plots.
|
|
26 March 2010
|
The public parts of the NWP SAF website
are no longer password-protected, and can be
freely viewed without the need for registration. |
|
25 February 2010
|
AAPP update v6.12 has been
released, together with OPS-LRS version
5-0+p12. The package includes the ability to
generate and process files from the
forthcoming EARS-IASI service, support for
new IASI BUFR files to be introduced by
EUMETSAT and a new version of the AVHRR
cloud mask, MAIA3. Click
here for further details of AAPP.
|
|
18 February 2010
|
An RTTOV applications page
has been added to the website, including
examples of near-real-time monitoring and simulated
imagery. Users are invited to provide
their own links or content demonstrating the
many different applications of RTTOV. |
|
28 January 2010
|
A solution has now been found to the recent
problems in accessing the NWP SAF
website. If you are still experiencing
difficulties accessing the site by the old
routes, please go instead to http://nwpsaf.eu/,
using the same user ID and password as
before. Please update any bookmarks you have
accordingly, as well as any links you have
on your own websites. If you are still
unable to access the site, please contact
the NWP SAF Helpdesk by email at nwpsaf@metoffice.gov.uk.
|
|
12 January 2010
|
AWDP software version 1.1 has been
released. AWDP is used for ASCAT
scatterometer wind
data-processing. Version 1.1 contains a few bug
fixes, and now writes the output in BUFR
Edition 4 format rather than BUFR Edition
3. Moreover, the output now contains up to
four wind solutions rather than two. This
occasionally results in a more consistent wind
field. Further
details of AWDP are available here.
|
|
|
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9 November 2009
|
Links to JMA monitoring
pages for geostationary radiances,
polar orbiter radiances and atmospheric motion
vections have been added to the monitoring
section of the website.
|
|
9 November 2009
|
Met
Office 1D-Var v3.3 has been
released. This new version adds support for
the RTTOV v9 radiative transfer model. Further
details can be found on the Met Office 1D-Var
page. |
|
23 October 2009
|
AAPP update v6.11 has been
released. This contains updates to allow for
the current performance characteristics of
the AMSU, MHS and HIRS instruments. Click here for further details
of AAPP.
|
|
12 October 2009
|
The ECMWF
experimental Auto-alert facility is now
available via the monitoring section.
|
|
23 June 2009
|
AAPP update v6.10 has been
released. This contains updated antenna
pattern data for NOAA-19 MHS, following
recent analysis by EUMETSAT of the
post-launch radiometric data and the
pre-launch antenna pattern characterisation.
Further details about AAPP can be found
here.
|
|
28 April 2009
|
AAPP update v6.9 has been
released. The main purpose is to provide updated
NOAA-19 data files, ready for when the satellite
is declared operational. Further details on AAPP
are here.
|
|
10 February 2009
|
NOAA-19
has been successfully launched, and initial results suggest that AVHRR
is performing normally (for details of AAPP software support
for NOAA-19, see the following news item). NOAA-19 is the
last of NOAA's current series of polar-orbiting environmental
satellites |
|
27 January 2009
|
AAPP update v6.8 has been released. The update
includes support for NOAA-19, to be launched in February.
Further details on AAPP are here. |
|
23 January 2009
|
Version 2 of the SeaWinds Data
Processor (SDP) has been released. SDP generates surface winds
from data obtained by the SeaWinds scatterometer on board
QuikSCAT. Like the AWDP software recently released, SDP performs
ambiguity removal with the 2-Dimensional Variational Ambiguity
Removal (2DVAR) method and supports the Multiple Solution
Scheme (MSS). SDP needs NWP model winds as a first guess for
the Ambiguity Removal step. Further details of SDP
and AWDP are available here. |
|
13 January 2009
|
The ASCAT Wind Data Processor (AWDP)
has been released. This software uses data from the Advanced
Scatterometer (ASCAT) and European Remote Sensing satellite
(ERS) scatterometer instruments to calculate surface winds,
performing ambiguity removal with the 2-Dimensional Variational
Ambiguity Removal (2DVAR) method and supporting the Multiple
Solution Scheme (MSS). AWDP needs NWP model winds as a first
guess for the Ambiguity Removal step. Further
details of AWDP are available here. |
|
11 November 2008
|
From 19th November users have had to
register in order to view pages on the NWP SAF website.
The password emailed to users after registration can be re-used
for future visits. These changes were required because of
new rules for webpages on our host server. |
|
|
4 July 2008
|
The NWP SAF IASI PCA-based compression package has been released. This
deliverable provides a relatively simple, stand-alone piece of code that
may be used both to calculate the PCs required and to apply them to new
spectra to perform noise filtering, so that a reduced set of channels
can be used for data assimilation. Further details are available
here. |
|
1 July 2008
|
AAPP update 6.7 has been released. This includes calibration parameters updates for AMSU-B, AMSU-A and MHS, a modification to the BUFR encoding utility and improved handling of orbital elements during spacecraft manoeuvers. Further details on AAPP are here. |
|
17 March 2008
|
A new version of the fast radiative
transfer model RTTOV has been released and
is now available as RTTOV v9. For
further information, including how to obtain RTTOV v9,
click here. |
|
19 Feb 2008
|
The NWP SAF scatterometer monitoring
report has been updated
to include ASCAT diagnostics and WINDSAT near real
time monitoring graphics. The updated pages are available
here. |
|
9 Nov 2007
|
The NWP SAF EARS monitoring report has
been extended to cover ATOVS data from the WMO Regional
ATOVS Retransmission Service (RARS) networks. Further
information is available here. |
|
2 August 2007
|
The NWP SAF ECMWF Aerosol and Cloud
Detection Package for high resolution infrared slounders has been
released. The software is based on a pattern recognition
technique and is designed to be used as a plug-in to
most NWP systems. Further details are available here. |
|
11 June 2007
|
A new web resource for "Sources
of Emissivity Data for RTTOV Users" has
been created and is now available here.
This catalogue provides information and links for emissivity
atlases and models for the infrared and microwave,
suitable for input to RTTOV. |
|
7 June 2007
|
A new release of the ECMWF diverse
profiles dataset has been released. It is
now on 91 levels and includes temperature, water vapour,
ozone, cloud water/ice and precipitation as variables
which are sampled. The new dataset can be accessed here. |
|
22 May 2007
|
AAPP upgrade 6.4 has been
released, together with a new version of the IASI Level
1 processor OPS-LRS. These two updates allow users to
process direct readout IASI data from MetOp-A. |
|
12 October 2006
|
Version 6 of AAPP (ATOVS and AVHRR Pre-Processing
Package) has been released. This latest version includes
METOP capability (including IASI), BUFR support and
an updated build system. For further information, including
how to obtain AAPP-6, click here. |
|
27 July 2006 |
The NWP SAF
Regional
and Global ATOVS intercomparison page has changed.
Level 1d EARS data will now be generated from level
1c files received from EUMETSAT, instead of from
level 1a files from the EARS stations. Local level
1d files generated from HRPT data received direct
at the Met Office remain unchanged, as do the global
NESDIS data which are generated from level 1b.
|
|
|
12 April 2006 |
The first version of the SeaWinds
Data Processor (SDP) has been released. For
further information, including how to obtain SDP, click here. |
|
18 July 2005 |
Version 5 of AAPP (ATOVS
and AVHRR Pre-Processing Package) has been released.This
latest version includes NOAA-N capability, navigation
enhancements, updated calibration algorithms, various
bug fixes and updated documentation. For further information,
including how to obtain AAPP-5, click here. |
|
14 April 2005 |
Interactive request
forms for NWP SAF software deliverables
have been added to the website. These simplify the
process of requesting and obtaining NWP SAF software. |
|
|
27 January 2005 |
Bias-correction Workshop: In
response to requests from many users for guidance on
bias-correction, the NWP-SAF plans to hold a workshop
on bias estimation and correction in data assimilation,
hosted by ECMWF, from 8 to 11 November 2005. Further
information is available on the ECMWF
web site.
|
|
10 November 2004 |
Version 2 of the ECMWF 1D-Var package,
a generalised minimisation code applicable to a wide
range of inversion problems for satellite data, has
been released. Note that, to achieve generality, the
code is not interfaced to any particular source of
satellite data. The user must define a control variable
and interface an appropriate radiative transfer model,
such as RTTOV (also available
from the NWP SAF). For further information, including
how to obtain the ECMWF 1D-Var, click here.
|
|
10 November 2004 |
Version 8 of RTTOV,
the fast radiative transfer model for infrared and
microwave satellite sensors, has been released. The
new version includes an improved microwave sea surface
emissivity model, FASTEM-3, improved simulations of
cloudy infrared radiances, and additional modules to
allow simulations of microwave scattering from hydrometeors.
For further information, including how to obtain RTTOV
v8, click here. To
help you decide if you need to upgrade to RTTOV v8 see
this page .
|
|
10 November 2004 |
Version 3 of the Met Office
1D-Var package, a stand-alone system for
doing 1D-Var retrievals from nadir-sounding satellite
sensors, has been released. The new version includes
a cloudy retrieval option and updated documentation.
For further information, including how to obtain
the Met Office 1D-Var, click here.
(Please note that, for most applications, users will
also need to obtain the RTTOV radiative
transfer model.)
|
|
1 March 2004 |
Central helpdesk established
to handle all suggestions, enquiries and bug reports
to the NWP SAF. These should be sent using the interactive Feedback
form. |
|
26 November 2003 |
The Initial Operational
Phase of the NWP SAF, to run from March 2004
to February 2007 was approved by EUMETSAT Council at
its 54th meeting. |
|
21 May 2003 |
The NWP SAF SSMI
monitoring report is now operational. |
|
|
11 October 2002 |
Updated versions of the
Software and Science parts of the AAPP user
guide, for AAPP v3, available via the AAPP/ATOVS
page. |
|
23 July 2001 |
The NWP SAF's 2nd user-requirements
survey is now underway. |
|
13 October 2000 |
SSM/I 1DVAR has
been released and is currently being distributed to users
by the NWP SAF Consortium under a beta-testing licence.
Prospective users should contact Dr Dave Jones for details
and a licence form. Users should note that the code requires
RTTOV v6 which exists under a separate licence (see below).
Updated Coefficients files for RTTOV v5 and RTTOV v6
are now available. |
|
8 August 2000 |
The first User Requirements survey of
the NWP SAF has been conducted. Implications for the
Workplan of the SAF are being considered. Non-controversial
items are currently being implemented.
Version 2 of AAPP has been developed by the NWP
SAF, integrated by EUMETSAT, and is being distributed
to users by EUMETSAT.
RTTOV v6 has been released and
is currently being distributed to users by the NWP
SAF Consortium under a beta-testing licence. Prospective
users should contact Dr Roger Saunders for details
and a licence form. |
|
31 May 2000 |
The NWP SAF successfully underwent
its Requirements Assessment and Planning Review (RAPR)
in May 2000. Recommendations of the RAPR were considered
by the NWP SAF Steering Group and agreed actions are
being implemented.
The Steering Group has approved three proposals
under the SAF Visiting Scientist scheme. |
|