Search found 191 matches

by GES DISC - mgreene
Tue Nov 07, 2023 3:14 pm America/New_York
Forum: Questions/Comments
Question: What's the difference between GPM_3IMERGHH_07 and GPM_3IMERGHH_06
Replies: 4

Re: What's the difference between GPM_3IMERGHH_07 and GPM_3IMERGHH_06

Hello, There are substantial changes in IMERG v07, more than would practically be possible to list here. It would be instructive to follow to the Data Release Notes from our news release: https://disc.gsfc.nasa.gov/information/data-release?title=Release%20of%20IMERG%20Final%20products%20version%2007...
by GES DISC - mgreene
Tue Nov 07, 2023 11:08 am America/New_York
Forum: Questions/Comments
Question: What's the difference between GPM_3IMERGHH_07 and GPM_3IMERGHH_06
Replies: 4

Re: What's the difference between GPM_3IMERGHH_07 and GPM_3IMERGHH_06

Hello,

Our GPM data and subject matter experts will examine your question and formulate a reply shortly.
by GES DISC - mgreene
Mon Sep 25, 2023 10:22 am America/New_York
Forum: Questions/Comments
Question: [M2I6NPANA] Missing values in air temperature
Replies: 2

Re: [M2I6NPANA] Missing values in air temperature

Hello, MERRA-2 has not extrapolated data beneath the surface. The result is that lower pressure levels, such as 1000, 925, and 850 hPa may consist of missing data if it is below the surface. More information can be found in the FAQ of the MERRA-2 project page : https://gmao.gsfc.nasa.gov/reanalysis/...
by GES DISC - mgreene
Mon Sep 25, 2023 8:15 am America/New_York
Forum: Questions/Comments
Question: [M2I6NPANA] Missing values in air temperature
Replies: 2

Re: [M2I6NPANA] Missing values in air temperature

Our MERRA-2 data and subject matter experts will examine your question and formulate a reply shortly.
by GES DISC - mgreene
Tue Sep 12, 2023 7:31 am America/New_York
Forum: Questions/Comments
Question: Magnitude and Unit of PM2.5, MERRA-2: Conversion Necessary?
Replies: 10

Re: Magnitude and Unit of PM2.5, MERRA-2: Conversion Necessary?

Hello, The equation for PM2.5 is the same as what we have posted on our FAQ page, so that is correct. (https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/FAQ/) I think this should work equally well for 1 hourly or 1 monthly calculations. As to why “the pixel size of the original five parameters (dusmass2...
by GES DISC - mgreene
Tue Sep 12, 2023 7:18 am America/New_York
Forum: Questions/Comments
Question: Atmospheric enthalpy flux
Replies: 4

Re: Atmospheric enthalpy flux

Hello,

Our MERRA-2 data and subject matter experts will examine your question and formulate a reply shortly.
by GES DISC - mgreene
Mon Sep 11, 2023 3:33 pm America/New_York
Forum: Questions/Comments
Question: Radiation
Replies: 1

Re: Radiation

Hello, The best that we can do is PARDR+NIRDR to get direct radiation that is missing a part in the UV, the model developer I asked says that this should be ~96% of the direct SW radiation PARDR is in tavg1_2d_lfo_Nx (M2T1NXLFO): Land Surface Forcings NIRDR is in tavg1_2d_flx_Nx (M2T1NXFLX): Surface...
by GES DISC - mgreene
Mon Sep 11, 2023 11:44 am America/New_York
Forum: Questions/Comments
Question: There are some questions about the parameter synthesis of pm2.5
Replies: 2

Re: There are some questions about the parameter synthesis of pm2.5

The equation for PM2.5 is the same as what we have posted on our FAQ page, so that is correct. (https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/FAQ/) I think this should work equally well for 1 hourly or 1 monthly calculations. As to why “the pixel size of the original five parameters (dusmass25/ocsma...
by GES DISC - mgreene
Mon Sep 11, 2023 9:17 am America/New_York
Forum: Questions/Comments
Question: Thousands of GPM IMERG files generated when downloading 30min data
Replies: 2

Re: Thousands of GPM IMERG files generated when downloading 30min data

Thank you for your question. A Subject Matter Expert has been notified and will respond to your question shortly.
by GES DISC - mgreene
Mon Sep 11, 2023 8:49 am America/New_York
Forum: Questions/Comments
Question: There are some questions about the parameter synthesis of pm2.5
Replies: 2

Re: There are some questions about the parameter synthesis of pm2.5

Thank you for your question. A Subject Matter Expert has been notified and will respond to your question shortly.