AMV Analysis Reports
The aim is to produce analysis reports every 2 years to coincide with the International Winds Workshops.
The second analysis report is the first full report of the monitoring.
| Report | Release Date |
| 10th Analysis Report(pdf) | Apr 2023 |
| 9th Analysis Report(pdf) | Feb 2020 |
| 8th Analysis Report(pdf) | Mar 2018 |
| 7th Analysis Report(pdf) | May 2016 |
| 6th Analysis Report(pdf) | Mar 2014 |
| 5th Analysis Report(pdf) | Feb 2012 |
| 4th Analysis Report(pdf) | Jan 2010 |
| 3rd Analysis Report(pdf) | Feb 2008 |
| 2nd Analysis Report(pdf) | Dec 2005 |
| 1st Analysis Report(pdf) | Apr 2001 |
The following table is only applicable to Analysis Report 8 and earlier.
| Analysis of features observed in the O-B statistics | ||
|---|---|---|
| Feature | Covered in: | Closed? |
| Low level (below 700 hPa) | ||
| 2.1 GOES fast bias in inversion regions | 2,3,5 | Yes, less prominent in new GOES product |
| 2.2 Indian Ocean | 2 | Yes, discussed elsewhere |
| 2.3 GOES winter negative speed bias over NE America | 2,3,6 | No, but improved in new product over sea |
| 2.4 Fast bias at 40-60S for Meteosat satellites | 2 | Yes, less prominent |
| 2.5 Trade wind fast bias | 2 | Yes, less prominent |
| 2.6 MSG positive bias over N Africa | 2,3,4,6,8 | No |
| 2.7 Spuriously fast Meteosat and MTSAT low level winds | 2,3,4,6,7 | No |
| 4.1 Model differences in the Pacific | 4,5 | No |
| 5.1 Patagonia negative bias | 5 | No |
| 5.2 MSG negative bias during Somali Jet | 5,6 | No |
| 6.1 Bias in tropical E Atlantic | 6 | No |
| 6.2 MTSAT and FY-2E bias during NE winter monsoon | 6 | No |
| 8.1 Meteosat-8 (IODC) Positive Speed Difference in the Tropics | 8 | No |
| Mid level (400-700 hPa) | ||
| 2.8 Positive bias in the tropics | 2,3,4,5,6,7,8 | No |
| 2.9 Negative bias in the extratropics | 2,3,4,5,6,7,8 | No, but MSG improved |
| 3.1 MTSAT-1R IR fast bias | 3,4 | Yes, removed by 19 May 09 JMA derivation update |
| High level (above 400 hPa) | ||
| 2.10 Jet region negative speed bias | 2,3,4,5,6,8 | No, but MSG improved |
| 2.11 NESDIS over-correction of slow bias in jets | 2,5 | Yes, less prominent |
| 2.12 Indian Ocean fast bias at high level | 2 | Yes, less prominent |
| 2.13 Tropics positive speed bias | 2,3,4,5,6,7,8 | No, but MSG improved |
| 2.14 High troposphere positive speed bias | 2,3,6,8 | No |
| 2.15 Differences between channels | 2,3,5 | No, but improved |
| 3.2 Negative speed bias in TEJ | 3,6 | No |
| 3.3 GOES-W bias change at 180 longitude | 3,5,6 | Yes, fixed in new GOES product |
| 4.2 GOES negative bias in tropical Pacific | 4,5,6 | No |
| 5.3 MTSAT tropical cyclone speed bias | 5,6,7 | No |
| 6.3 Very high FY-2E WV winds | 6,7 | Yes |
| Polar AMVs | ||
| 2.16 Number of MODIS IR winds | 2 | Yes, improved |
| 2.17 CIMSS MODIS mid level fast winds | 2 | Yes, removed by fix in May 06 |
| 2.18 CIMSS MODIS slow winds | 2 | Yes, improved |
| 2.19 High level positive speed bias | 2,3,4,5 | No |
| 2.20 Low level negative speed bias | 2,3,4 | No |
| 3.4 NESDIS MODIS IR slow streak | 3,4 | Yes, removed by NESDIS fix on 27 Oct 09. |
| 3.5 CIMSS polar AMV problem in Sep-Oct 2007 | 3 | Yes, improved Oct 07, second correction Jan-Feb 08. |
| 3.6 NESDIS-CIMSS polar AMV differences | 3,5 | Yes, no longer significant |
| 4.3 Near-pole mid level negative bias | 4,5 | No |
| 6.4 EUMETSAT Metop near the poles | 6 | No |
| 7.1 Dual-Metop Positive Bias in Tropics . | 7 | No |
| 7.2 EUMETSAT Metop High Level Negative Bias in Extra-Tropics . | 7 | No |
| 7.3 MISR Fast Bias over Ice and Desert . | 7 | No |
| 7.4 LeoGeo Coverage Gaps at Particular Longitudes | 7,8 | No |
| 7.5 Stripes of Large O-Bs in MISR data. | 7 | No |
| 7.6 Square-Shaped Spatial Distribution of Suomi-NPP Winds. | 7,8 | No |