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The GES DISC Help Desk recently received this question from a user, and it was answered by a GES DISC staff scientist. It is provided here for information content. I have a question regarding the conversion of the soil moisture content from kg m-2 (or mm) to volumetric soil moisture. Therefore, I'l...

Here is the answer, a collaboration between our SME and a GES DISC staff scientist. 1. GLDAS total runoff is the sum of subsurface runoff “Qsb_acc” and surface runoff “Qs_acc”. 2. Since the units of “kg m-2” as 3-hour accumulation is correct, there is no near term plan to change the units in the Ne...

The GES DISC Help Desk recently received this question from a user, and it was answered by a Subject Matter Expert. It is provided here for information content. I have a question regarding the runoff data from the GLDAS dataset and the way I should aggregate it within a hydrologic catchment. I have...

This was actually a question from our testing phase. Did you want additional information about the IR channels of AIRS?

The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) has recently published a Data-in-Action article entitled "Atmospheric Infrared Sounder (AIRS) surface temperature data show unusual Antarctic high temperatures in February" From the Introduction: In early Febru...

The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) has published its analysis of anomalies and extremes in global surface air temperatures and precipitation for the month of February 2020. The assessment uses: 1. Atmospheric Infrared Sounder (AIRS) surface air temperatur...

Dear Antu, Thank you for an excellent question. However, the appropriate Distributed Active Archive Center (DAAC) to answer your question is the Ocean Biology DAAC, OB.DAAC, https://oceancolor.gsfc.nasa.gov . The OB.DAAC has a User Forum that is dedicated to answering questions from the ocean color ...

Our Subject Matter Expert indicates that the best MERRA-2 rainfall product to use is the Total Surface Precipitation, time average, Hourly temporal resolution.

Answer: The daily volume of AIRS L1B products is: The average size of each granule: L1B-AIRS-IR-Rad: 13,440 Mb L1B-Vis/NIR-Rad: 2,640 Mb L1B-AMSU-Rad: 144 Mb L1B-HSB-Rad: 408 Mb L2-Standard-Product: 552 Mb L2-Support-Product: 2,496 Mb L2-Cloud-Cleared-Rad: 2,280 Mb L1B-AIRS-IR-Rad: 56 Mb L1B-Vis/NIR...

There is a document comparing the datasets:

https://docserver.gesdisc.eosdis.nasa.g ... sition.pdf

More technical information can be found if you wish a comparison of the data characteristics in each product.