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MODIS-Aqua atmospheric products Collection 5.1 available in Giovanni NEESPI

Updated aerosol and cloud parameters available

Selected aerosol and cloud parameters from the new version of MODIS-Aqua (Collection 5.1) products have been integrated into Giovanni NEESPI Monthly and NEESPI Daily instances, respectively. The products of Collection 5.1 (MYD08_M3.051 and MYD08_D3.051) have replaced original Collection 5 (MYD08_M3.005 and MYD08_D3.005). The principal changes in Collection 5.1 are:

1) improvements to the Deep Blue Aerosol retrieval;

2) improved (non-Lambertian) parameterization of the surface BRDF effect;

3) cloud screening and QA/QC flag selection, leading to improved accuracy over bright reflecting surfaces;  and

4) a fix to the Rayleigh correction code that was causing some dropouts of the Cloud Optical Thickness retrieval over land.

For a complete description of the Collection 5.1 changes, please read: MODIS-Atmosphere Collection 051 Changes, Version 01 (PDF).

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Last updated: Sep 10, 2009 02:08 PM ET
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