Search found 139 matches

by LP DAAC - lien
Fri May 05, 2023 3:14 pm America/New_York
Forum: Questions/Comments
Question: Could not retrive time and lat/lon info from MYD11C1 files.
Replies: 1

Re: Could not retrive time and lat/lon info from MYD11C1 files.

Hi, Sorry for the hassles with the MYD11C1, the Climate Modeling Grids are a little different to work with then the tiled products. There is the Time of daytime (nighttime) observation SDS layer, but I am guessing it does not do you a lot of good if you do not have the coordinate that it goes with i...
by LP DAAC - lien
Wed May 03, 2023 9:18 am America/New_York
Forum: Questions/Comments
Question: GEDI L1B
Replies: 2

Re: GEDI L1B

Hi Maye, Sorry for the delay, we passed your questions to the GEDI developers for their suggestions, please see the following: See the L2A ATBD. Only minor smoothing (2 ns Gaussian width) has been applied to reduce high frequency noise and eliminate ADC artifacts. The user may wish to apply addition...
by LP DAAC - lien
Wed May 03, 2023 9:13 am America/New_York
Forum: Questions/Comments
Question: ground identification using GEDI waveform
Replies: 4

Re: ground identification using GEDI waveform

Hello, The GEDI science team responded: There is sufficient information in the ATBD to derive an RH metric, but unfortunately no code examples. The L2A code is not yet publicly available, but derivation of RH metrics from simulated GEDI waveforms is available in the GEDI simulator (https://bitbucket...
by LP DAAC - lien
Tue Apr 18, 2023 11:02 am America/New_York
Forum: Questions/Comments
Question: about mod09gq
Replies: 1

Re: about mod09gq

Hello It has not been processed for clouds and snow. Pixel level QA information from clouds are stored in the MOD09GA 1KM State flags. MODIS Surface Reflectance does not view cloud pixels as bad but rather a state of being. So it collects the reflectance off of cloud tops or snow just as it would dr...
by LP DAAC - lien
Tue Apr 18, 2023 10:08 am America/New_York
Forum: Questions/Comments
Question: ECOSTRESS Data
Replies: 6

Re: ECOSTRESS Data

Hello,
Sorry for the delay on this. We were in contact with the Ecostress Science team, and we are quite sure this is a cloud top issue. I double checked with MODIS data for that time an area and MODIS called it fill because of cloud issues
Thanks,
Brett
by LP DAAC - lien
Tue Apr 18, 2023 9:27 am America/New_York
Forum: Questions/Comments
Question: MOD13Q1 HDF missing files
Replies: 5

Re: MOD13Q1 HDF missing files

Hi Julio, Ideally,it is best to use the same version, however for now there really is no other choice. When there is coverage from both Versions for you area of interest you may want to make a comparison just to check if there is much difference. The algorithm changes made between the versions were ...
by LP DAAC - lien
Fri Apr 07, 2023 11:25 am America/New_York
Forum: Questions/Comments
Question: Missing MYD11A2 tiles on data.lpdaac.earthdatacloud
Replies: 3

Re: Missing MYD11A2 tiles on data.lpdaac.earthdatacloud

Hello,
Thanks for the heads up on this issue. They should all now be available through CMR also. Before they were only in the LPDAAC Data Pool but they are available in the cloud also. Thanks for your patience.
Brett
by LP DAAC - lien
Tue Mar 28, 2023 11:16 am America/New_York
Forum: Questions/Comments
Question: Accessing the number of times and dates that ISS passed a site
Replies: 2

Re: Accessing the number of times and dates that ISS passed a site

Hello, This can be done using the Earthdata Search Tool: https://search.earthdata.nasa.gov/search You can enter your Gedi data set and select a date range, it will return all collected granules that fit your search parameters. You may also want to take a look at this: https://openaltimetry.org/data/...
by LP DAAC - lien
Tue Mar 28, 2023 9:27 am America/New_York
Forum: Questions/Comments
Question: MOD05 hdf to tiff
Replies: 2

Re: MOD05 hdf to tiff

Good Morning,
We might have some alternative options also, what specific data product are you working with?
Thanks,
Brett
by LP DAAC - lien
Tue Feb 28, 2023 3:55 pm America/New_York
Forum: Questions/Comments
Question: How to load MODIS/Terra+Aqua MAIAC Land Aerosol Optical Depth Daily L2G 1 km SIN Grid (MCD19A2) using Xarray Python
Replies: 2

Re: How to load MODIS/Terra+Aqua MAIAC Land Aerosol Optical Depth Daily L2G 1 km SIN Grid (MCD19A2) using Xarray Python

Hello Unfortunately, we do not have a tutorial for working with MCD19A2 data currently. But you can try the code below. make sure you are using the correct group for this dataset. For this dataset "grid1km" and "grid5km" are valid inputs for "group". you can also choose...