MODIS Data Download

Use this Forum to find information on, or ask a question about, NASA Earth Science data.
Post Reply
xhzhang
Posts: 3
Joined: Mon Dec 16, 2024 8:36 am America/New_York
Answers: 0
Been thanked: 1 time

MODIS Data Download

by xhzhang » Mon Dec 16, 2024 9:08 am America/New_York

Hello,
Our research project requires long-term Cloud_Mask data (MYD35_L2) in a specific area, but when I tried to filter and reformat the data through post-processing tools on https://ladsweb.modaps.eosdis.nasa.gov/search/, I noticed that there is a limit of file number for submitting order, which made it difficult to download all the files we need.
I am wondering if it would be possible to process a large amount of data at a time and download them? And is it feasible to filter the data and download them through wget or other download tools?
Thanks for help!
Attachments
1.jpg
1.jpg (149.33 KiB) Not viewed yet

Filters:

LAADSx_UserServices_M
Posts: 377
Joined: Mon Sep 30, 2019 8:33 am America/New_York
Answers: 2
Has thanked: 3 times

Re: MODIS Data Download

by LAADSx_UserServices_M » Tue Dec 17, 2024 2:42 pm America/New_York

Yes, 2000 files limit per order is a hard limit that cannot be changed. Since converting hdf files to geoTIFF format will save each layer as a seperate file. So, you can reduce the number of files in your order by only selecting the layers you need. However, if your order is still more than 2000 files then you need to break your order multiple smaller orders. If you prefer not to use the Find Data web interface, you can write a script that automates the process. See https://ladsweb.modaps.eosdis.nasa.gov/tools-and-services/#lwsclassic for more information (ignore the reference to API-V2, since it has not yet implemented an order interface, which you need for PostProcessing). Debug your script with one order at a time until you get what you need.
Regards,
LAADS User Services

To receive news from LAADS DAAC direct to your inbox, email laadsdaac-join@lists.nasa.gov with “subscribe” in the subject line.

Post Reply