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28 new Famine Early Warning Systems Network Land Data Assimilation System (FLDAS) data variables, based on Climate Hazards Group IR Precipitation with Station Preliminary (CHIRPS-PRELIM) 6-hr rainfall data, have been added to the Giovanni system, https://giovanni.gsfc.nasa.gov/.

The Goddard Earth Sciences Data and Information Services Center (GES DISC) and Jet Propulsion Laboratory Sounder Science Investigator-led Processing Systems (JPL Sounder SIPS) announce the release of Level 2 version 2 products from the AIRS (Atmospheric Infrared Sounder) and Advanced Microwave Sound...

Thank you for your interest in our data and services. When you download comma-separated value (CSV) files, you will find a line like this: Fill Value (mean_OMAERUVd_003_FinalAerosolOpticalDepth500):, -1.267651e+30 that appears near the beginning of the file, before the data values for the variable. ...

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I am not familiar with the data variables in the MYD04_L2 data product. For your second question, MERRA-2 has a Black Carbon data variable and several dust aerosol data variables. OMI and TROPOMI have aerosol absorption variables for absorbing aerosols. Giovanni can provide a quick indicator even if...

Hello, Here is a partial answer, with links to resources that can provide more information. First of all, it would be helpful to provide more information on how you wish to use the data. We would like encourage you to read MERRA-2 File Specification ( https://gmao.gsfc.nasa.gov/pubs/docs/Bosilovich7...

We'll check with our MERRA-2 data scientists at the GES DISC and also contact the MERRA-2 scientists to find out if we can provide some guidance for you on this question.

Giovanni receives the standard MODIS-Aqua chlorophyll-a (chlor_a) data product from the OBDAAC. The algorithm is described here:

https://oceancolor.gsfc.nasa.gov/atbd/chlor_a/

Mengmeng, For aerosol optical depth, because it is a cumulative measure of light absorption / scattering in the atmosphere, there is not a value at a specific altitude. For water vapor, the Atmospheric Infrared Sounder (AIRS) provides data at specific pressure levels (hPA); these pressure levels can...

Mengmeng, Thank you for your query. Unfortunately, what you are seeking is not clear from the way your question is phrased. Do you want instructions on how to acquire these variables from our system for specific dates and locations? Or are you trying to compare these MERRA-2 variables to data variab...