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Hello, Could you please point us to, or describe, which specific PM2.5 and PM10 data you used or intend to use? This will assist us in answering your question. Monthly mean AOD data from MODIS and Sentinel-5P (TROPOMI) is usually calculated from daily mean data with caveats, such as only daytime dat...

Our staff is examining the information you provided about the MERRA-2 download and will reply, likely early next week (February 6-10).

Hello, I have asked one of our GES DISC staff members who is familiar with these aerosol data products. Here is their answer; note that if you can provide additional information we may be able to give you more specific information. "I need more information from this user. For example, which VII...

The PIC algorithms are based on the light scattering properties of coccolithophorids, primarily Emiliania huxleyi. Because of their larger size and generally lower population density in the water column, calcareous zooplankton are unlikely to significantly influence the ocean optical characteristics...

We have examined what you reported, and we do not see differences between the cumulus-published CMR inventory, and the inventory in s4pa for IMERGHHL. The latter is also reconciled with PPS (the jsimpson host). There is nothing missing in CMR for IMERGHHL. Users should be careful in using CMR API qu...

Thank you for bringing this to our attention. We will investigate the mismatching information in CMR.

Hello, thank you for your question. This week we are performing the final steps of system maintenance on Giovanni that we have been preparing for and testing for in previous months. Late in 2022, previous versions of ocean color data were removed in preparation for adding the newest versions, which ...

The MERRA-2 reanalysis dataset has many dust-related variables at hourly temporal resolution. You may choose the time period and spatial region of interesting using Giovanni. Please reply if you would like additional information and instruction on using Giovanni. https://giovanni.gsfc.nasa.gov/giova...

The MERRA-2 data collection can provide this. You can get it in Giovanni (link provided below) or directly from the dataset at the GES DISC.

https://giovanni.gsfc.nasa.gov/giovanni/#service=TmAvMp&starttime=&endtime=&data=M2T1NXSLV_5_12_4_U10M%2CM2T1NXSLV_5_12_4_V10M

Please examine the information at this link to determine if it addresses your data download problem:

https://disc.gsfc.nasa.gov/information/howto?keywords=wget&title=How%20To%20resolve%20data%20download%20problems