GOES-R AWG Product Validation Tool Development. Aerosol Optical Depth/Suspended Matter and Aerosol Particle Size Mi Zhou (IMSG) Pubu Ciren (DELL) Hongqing Liu (DELL) Istvan Laszlo (STAR) Shobha Kondragunta (STAR). OUTLINE. Products Validation Strategies & Tools Selected Examples
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Aerosol Optical Depth/Suspended Matter and Aerosol Particle Size Mi Zhou (IMSG)
Hongqing Liu (DELL)
Istvan Laszlo (STAR)
ABI snow mask
Correct ABI snow mask
Reprocessed ABI retrieval
Aerosol Detection Product Team Shobha Kondragunta (STAR) and Pubu Ciren (DELL)
Dust plume over China
Smoke over eastern Asia
Product generated using MODIS L1B radiances at 1 km resolution. Accuracy requirements: 80% (dust); 80% (smoke over land) and 70% (smoke over water)
Percentage of Pixels (%)
Day of the Year (2011)
Total Column Ozone Chris Schmidt (UW-Madison)
* The 10 km resolution is a legacy of the cancelled GOES-R sounder.
There are three potential sources of validation data
Satellite collocations of ozone values
Ground based detection
Model-generated proxy data
Approach: Focus on satellite collocations as primary validation.
Long-term Validation Plan: Validate against UV-based satellites and ground-based network as available
August 2006 average total column ozone
Desert surfaces pose a challenge for the regression
Ozone total column requirement is that precision be within 25 DU and accuracy be within 15 DU.
Regression is trained for each satellite, unaccounted for biases in BTs will lead to differences in performance between satellites.
For the Met-8 dates (August 2006, 1-14 Feb 2007, 1-10 April 2007) in the standard 10 week proxy dataset, overall precision was 14.8 DU and accuracy was 3.3 DU.
For the Met-9 dates (11-13 April 2007, 1-13 October 2007) the precision was 18.6 DU and the accuracy was 8.1 DU. There appears to be bias in the BTs that is unaccounted for in the regression training.
Cloud mask is from the AWG Clouds team.
TCO from Dobson instruments at ground stations, primarily in Europe but some in Africa (see below), compared to SEVIRI TCO for dates August 2006, 1-14 Feb 2007, 1-13 April 2007, and 1-13 October 2007. Overall precision was 23.7 DU and accuracy was 2.1 DU.