Search found 15 matches

by LANCE & FIRMSx - ddavies
Thu Mar 20, 2025 12:59 pm America/New_York
Forum: Home
Question: MODIS and VIIRS Pixel Size Discrepancy between FIRMS Viewer and reported scan and track
Replies: 1

Re: MODIS and VIIRS Pixel Size Discrepancy between FIRMS Viewer and reported scan and track

Thanks for getting in touch and pointing this out. It looks like a scaling issue with latitude - we will look in to it more and work on a fix.
by LANCE & FIRMSx - ddavies
Tue Dec 03, 2024 2:40 pm America/New_York
Forum: Home
Question: FIRMS Imagery distribution license ?
Replies: 2

Re: FIRMS Imagery distribution license ?

The Esri World Imagery Service terms of use identified for this service is on their website (https://goto.arcgis.com/termsofuse/viewtermsofuse) as well as a snapshot of it is provided below. There is also some additional interesting guidance available on the OSM Wiki at https://wiki.openstreetmap.or...
by LANCE & FIRMSx - ddavies
Tue Dec 03, 2024 2:35 pm America/New_York
Forum: Home
Question: "FIRMS" Inquiry Regarding Hotspot Data Characteristics and Missing Values
Replies: 1

Re: "FIRMS" Inquiry Regarding Hotspot Data Characteristics and Missing Values

Regarding question 1: Data losses due to outages in the MODIS and VIIRS record, where data was not collected, are available at https://modaps.modaps.eosdis.nasa.gov/services/production/outages.html. This resource can be used to compare the observed periods of missing data relative to these outage pe...
by LANCE & FIRMSx - ddavies
Thu Sep 05, 2024 1:04 pm America/New_York
Forum: Home
Question: Comparing VIIRS Thermal Anomalies over Europe with FIRMS
Replies: 5

Re: Comparing VIIRS Thermal Anomalies over Europe with FIRMS

Hi Conrad - I have been in touch with the team on the CSPP LEO forum and understand they are following up with you directly.
Let us know if you have any additional questions for us.
by LANCE & FIRMSx - ddavies
Tue Sep 03, 2024 5:54 am America/New_York
Forum: Home
Question: Comparing VIIRS Thermal Anomalies over Europe with FIRMS
Replies: 5

Re: Comparing VIIRS Thermal Anomalies over Europe with FIRMS

Hi Conrad, It looks like v2.1 is the current version of the VIIRS active fire detection algorithm in CSPP. CSSP uses the NOAA fire algorithm. FIRMS uses the NASA algorithm - I am not sure what the differences in the algorithm. I have made an enquiry but not heard back yet. There will be a difference...
by LANCE & FIRMSx - ddavies
Wed Aug 21, 2024 12:12 pm America/New_York
Forum: Home
Question: Comparing VIIRS Thermal Anomalies over Europe with FIRMS
Replies: 5

Re: Comparing VIIRS Thermal Anomalies over Europe with FIRMS

@cbielski_riscognition.com
Hi Conrad,
You are looking to understand the differences between TA from a direct readout station and FIRMS. As you point out this could be due to a number of things but most likely the algorithm (including version) that is being used. What algorithm are you using?
Diane
by LANCE & FIRMSx - ddavies
Wed Jan 10, 2024 5:04 am America/New_York
Forum: Home
Question: VIIRS fire data
Replies: 2

Re: VIIRS fire data

Sorry this post slipped through the net - so apologies for the later reply! There are data for the period you are interested in so, please try again and if you still have problems email support@earthdata.nasa.gov with the email address you used for the query so we can check what is happening. As an ...
by LANCE & FIRMSx - ddavies
Thu Aug 03, 2023 4:00 pm America/New_York
Forum: Home
Question: On annual summary data (FIRM MODIS)
Replies: 2

Re: On annual summary data (FIRM MODIS)

Hi - Thanks for your interest in FIRMS. 1. You are correct - the archived FIRMS MODIS data colums columns 'brightness' and 'bright_t31' are both temperatures in Kelvin measured by different wavelengths (4 or 11 um as in the paper). You can find out about the attributes here: https://www.earthdata.na...
by LANCE & FIRMSx - ddavies
Fri May 12, 2023 11:24 am America/New_York
Forum: Home
Question: FIRMS api
Replies: 1

Re: FIRMS api

Thank you for letting us know. We had a system reboot and one of our services failed to restore. It should be fixed now. Let us know if you experience any more issues.