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Home • MERRA-2 FAQ: How to Download MERRA-2 Daily Mean Data
Demonstration of how to download MERRA-2 daily mean data over a region from a 3-hourly data collection, M2I3NPASM_5.12.4 (MERRA-2 inst3_3d_asm_Np).Example data: MERRA-2 3-d, 3-Hourly, Instantaneous,...
View ArticleHome • MERRA-2 FAQ: How can I subset and download a large amount of MERRA-2...
The GES DISC provides multiple services for subsetting and downloading MERRA-2 data on the Product Landing Page (see an example for M2T1NXSLV) for each data collection. Shown below are recommended...
View ArticleHome • WLDAS Subset Data Skipping Dates from Links List
When I follow the wget instructions on the WLDAS download page to download multiple years worth of data for a spatial and variable subset, the download skips every forth day. I have checked the .txt...
View ArticleHome • Re: Tips for retrieving satellite data
How about OB.DAACs satellite orbit predictor tool...for the missions we archive data for: https://oceandata.sci.gsfc.nasa.gov/overpass_pred/Statistics: Posted by OB.DAAC - amscott — Fri Jul 05, 2024...
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Home • MERRA-2 FAQ: I am interested in using MERRA-2 for wind analysis
MERRA-2 has zonal and meridional wind components at various vertical levels – for example at 2, 10, and 50 meters above the surface and at 850, 500, and 250 hPa pressure levels. MERRA-2 has...
View ArticleHome • Re: Delay/ lag in Sentinel-1 SLC
Hi Bill,We have been seeing low counts and increased latency again over last couple of days again. Is there a resource on ESA side that you could point us to that might indicate issues at source? We...
View ArticleHome • Re: access to alos 2
JAXA provides some open ALOS-2 PALSAR ScanSAR data. Information on availability can be found on this product information webpage: https://www.eorc.jaxa.jp/ALOS/en/dataset/palsar2_l22_e.htmPlease note...
View ArticleHome • Re: Level-2 format change?
It seems that only MODIS-A L2 ares affected for the moment, both VIIRS did not change.We use cntl_pt_rows to detect the start of a MODIS bowtie using this equation ((cntl_pt_rows - 1) % 10) == 0How...
View ArticleHome • Re: WLDAS Subset Data Skipping Dates from Links List
Hello. Our staff members familiar with the wget download process will be examining your question today. Can you provide a copy of the file list so we can see the date range?Statistics: Posted by GES...
View ArticleHome • Re: MOD13Q1 NDVI data preprocessing
Hello @q1w2e3r4Please take a look at the AppEEARS tool: https://lpdaac.usgs.gov/tools/appeears/I am not sure which interface you had initially tried, but I believe AppEEARS will perform the processing...
View ArticleHome • Re: MOD06_L2 data ranges and missing data
Our product SME investigated MOD06_L2 data and found how to distinguish Cloud_Optical_Thickness (COT) between no data case and failed retrieval.For example, for 2.1 micron (band 7), the valid range...
View ArticleHome • Get Level0 files size from curl command line
Hello, I would like to check if a file I downloaded (say https://oceandata.sci.gsfc.nasa.gov/getfile/A2002311192500.L0_LAC.bz2 ) was fully downloaded to avoid downloading it again during batch...
View ArticleHome • Re: v002 delays and incomplete updates VJ113A1 VNP13A1
We checked and for the VNP13A1 and VJ113A1 for June 17, 2024 the tiles you asked about are all available. Full suite of products were generated on July 3, 2024.The VI (VNP13A1/VJ113A1) is a 16-day...
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Home • Identifying PACE Rrs Wavelengths
Hello,I have been following Ocean Color's Jupyter notebook tutorial on file structure at L2 processing levels for OCI...
View ArticleHome • Re: Identifying PACE Rrs Wavelengths
Hi!Thank you for the feedback! We'll work on updating the notebook to show how this is done.In the meantime, the wavelengths themselves are stored in the "sensor_band_parameters" group in the file....
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Home • CALIPSO Extinction Coefficient Plot Python Code
I am trying to make a CALIPSO CALIOP 532 nm Extinction Coefficient Plot from an hdf4 file that looks like this:...
View ArticleHome • Re: SNPP VIIRS issue processing SST
I have finally figured out that l3mapgen has a small problem (or I'm missing something). When I generate a TIFF image with l3mapgen with:Code: l3mapgen interp=area projection='EPSG:3857' threshold=0.5...
View ArticleHome • Re: Get Level0 files size from curl command line
Since the files are bz2 compressed, you can run the Code: bunzip2 -t <file> test command. If the download is incomplete, the file will not have a valid bz2 structure and the test will return a...
View ArticleHome • MODIS Aqua SST L2P outage
Due to a change in the input format for the GHRSST MODIS Aqua L2P SST dataset (https://doi.org/10.5067/GHMDA-2PJ19), its production has temporarily halted. The exact length of the outage is unknown at...
View ArticleHome • Re: MODIS Aqua SST L2P outage
In the future when formatting changes occur I recommend that more notice be given. There are many products that use the MODIS l2P, inclusive the MUR SST data. These products are used operationally so...
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