MCD14DL-NRT

Short Name: MCD14DL

Product Title: MODIS/Aqua+Terra Thermal Anomalies/Fire locations 1km FIRMS V0061 NRT (Vector data)

DOI:10.5067/FIRMS/MODIS/MCD14DL.NRT.0061

Please note C61 supersedes C6. The C61 processing does not contain any updates to the science algorithm; changes were made to improve the calibration approach in the generation of the Terra and Aqua MODIS Level 1B products.

Platform: Aqua & Terra Instrument: MODIS

Links to Download Data: https://www.earthdata.nasa.gov/learn/find-data/near-real-time/firms/active-fire-data

Long Name: MODIS/Aqua+Terra Thermal Anomalies/Fire locations 1km V0061 NRT (Vector data) distributed by LANCE FIRMS

Summary

Near real-time (NRT) Moderate Resolution Imaging Spectroradiometer (MODIS) Thermal Anomalies / Fire locations - Collection 61 processed by NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE) Fire Information for Resource Management System (FIRMS), using swath products (MOD14/MYD14) rather than the tiled MOD14A1 and MYD14A1 products. The thermal anomalies / active fire represent the center of a 1 km pixel that is flagged by the MODIS MOD14/MYD14 Fire and Thermal Anomalies algorithm (Giglio 2003) as containing one or more fires within the pixel. This is the most basic fire product in which active fires and other thermal anomalies, such as volcanoes, are identified.

MCD14DL are available in the following formats: TXT, SHP, KML, and WMS. These data are also provided through the LANCE FIRMS Fire Email Alerts. Please note only the TXT and SHP files contain all the attributes.

Collection 61 data replaced Collection 6 (doi:10.5067/FIRMS/MODIS/MCD14DL.NRT.006) in April 2021.

Spatial Coverage: Global
Spatial Resolution: 1 km at nadir
Projection: WGS84

Attribute fields
Attribute Short Description Long Description
Latitude Latitude Center of 1 km fire pixel but not necessarily the actual location of the fire as one or more fires can be detected within the 1 km pixel.
Longitude Longitude Center of 1 km fire pixel but not necessarily the actual location of the fire as one or more fires can be detected within the 1 km pixel.
Brightness Brightness temperature 21 (Kelvin) Channel 21/22 brightness temperature of the fire pixel measured in Kelvin.
Scan Along Scan pixel size The algorithm produces 1 km fire pixels but MODIS pixels get bigger toward the edge of scan. Scan and track reflect actual pixel size.
Track Along Track pixel size The algorithm produces 1 km fire pixels but MODIS pixels get bigger toward the edge of scan. Scan and track reflect actual pixel size.
Acq_Date Acquisition Date Data of MODIS acquisition.
Acq_Time Acquisition Time Time of acquisition/overpass of the satellite (in UTC).
Satellite Satellite A = Aqua and T = Terra.
Confidence Confidence (0-100%) This value is based on a collection of intermediate algorithm quantities used in the detection process. It is intended to help users gauge the quality of individual hotspot/fire pixels. Confidence estimates range between 0 and 100% and are assigned one of the three fire classes (low-confidence fire, nominal-confidence fire, or high-confidence fire).
Version Version (Collection and source) Version identifies the collection (e.g. MODIS Collection 6) and source of data processing: Near Real-Time (NRT suffix added to collection) or Standard Processing (collection only).
"6.1NRT" - Collection 61 NRT processing
"6.1" - Collection 61 Standard processing
Find out more on collections and on the differences between FIRMS data sourced from LANCE FIRMS and University of Maryland.
Bright_T31 Brightness temperature 31 (Kelvin) Channel 31 brightness temperature of the fire pixel measured in Kelvin.
FRP Fire Radiative Power (MW - megawatts) Depicts the pixel-integrated fire radiative power in MW (megawatts).
Type* Inferred hot spot type 0 = presumed vegetation fire
1 = active volcano
2 = other static land source
3 = offshore
DayNight Day or Night D= Daytime fire, N= Nighttime fire

*This attribute is only available for MCD14ML (standard quality) data

Related Products

VECTOR DATA - available from LANCE FIRMS

Data extracted from the MCD14ML Standard Active Fire / Thermal Anomalies product are available, usually after 2 months, from the FIRMS Active Fire Download Tool. The original data are also available from the MODIS Active Fire and Burned Area Products website. Both MCD14DL and MCD14ML can be viewed in FIRMS Fire Map.

RASTER DATA

NEAR-REAL TIME PRODUCTS (HDF-EOS format) - available from LANCE and Earthdata Search

Fire 5-Min L2 1km V0061 NRT MO/YD14 MODIS/Aqua Thermal Anomalies/Fire 5-Min L2 1km V0061 MO/YD14CRS MODIS Coarse Thermal Anomalies/Fire 5-Min L2 Swath 5km V0061 NRT MO/YD14CRS MODIS Coarse Thermal Anomalies/Fire 5-Min L2 Swath 5km V0061 Climate Modeling Grid Fire Products

MODIS Global Daily Fire QA Product

Burned Area: MODIS Global Burned Area Product (MCD64A1) (HDF-EOS format/GeoTIFF/SHP)

Available from the University of Maryland Active Fire and Burned Area Products website in HDF-EOS format and as GeoTIFF and SHP files Available from NASA's Land Processes Distributed Active Archive Center (LP DAAC) and accessible through Earthdata Search.

Level 2 Products (HDF-EOS format)

8-Day Daily Composite Fire Product MOD14A1 (Terra) and MYD14A1 (Aqua) 8-Day Summary Fire Product MOD14A2 (Terra) and MYD14A2 (Aqua)
  • MOD14GD/MOD14GN (Terra) and MyD14GD/MYD14GN (Aqua) Level 2G Daytime and Nighttime Fire Products

STANDARD SCIENCE QUALITY PRODUCTS - available from NASA's Land Processes Distributed Active Archive Center (LP DAAC) and NASA's Level-1 and Atmosphere Archive and Distribution System DAAC (LAADS DAAC) and Earthdata Search

Level 2 Products (HDF-EOS format)

MOD14 (Terra) and MYD14 (Aqua) MODIS Thermal Anomalies
Data Acknowledgement

This dataset was provided by LANCE FIRMS operated by NASA ESDIS with funding provided by NASA Headquarters

For Shape Files:

NASA Near Real-Time and MCD14DL MODIS Active Fire Detections (SHP format). Dataset. Available online [https://www.earthdata.nasa.gov/learn/find-data/near-real-time/firms/active-fire-data]

For Text Files:

NASA Near Real-Time and MCD14DL MODIS Active Fire Detections (TXT/CSV format). Dataset. Available online https://www.earthdata.nasa.gov/learn/find-data/near-real-time/firms/active-fire-data]

For KML Files:

NASA Near Real-Time and MCD14DL MODIS Active Fire Detections (KML format). Dataset. Available online https://www.earthdata.nasa.gov/learn/find-data/near-real-time/firms/active-fire-data]

For Web Services:

NASA Near Real-Time and MCD14DL MODIS Active Fire Detections. Dataset. Available online https://www.earthdata.nasa.gov/learn/find-data/near-real-time/firms/active-fire-data]

Near Real-Time vs Standard Products

The MCD14DL NRT products are extracted from NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE) NRT versions of the MOD14 and MYD14 HDF files and maybe subject to geo-location errors or re-processing. The NRT fire data are replaced with data extracted from the standard MCD14ML Active Fire / Thermal Anomalies locations (vector data) as they become available, usually after 2 months, from the FIRMS Active Fire Download Tool, or from the University of Maryland MODIS Fire and Burned Area Products website.

LANCE processes data as soon as they are downlinked from satellites or transmitted from ground stations, generally within 30 minutes to two hours after satellite observation. Routines used to derive Level 2 products, such as fire, snow, and sea ice products, do not make use of ancillary data and therefore their codes are identical to the ones used in standard operations.

The difference between MODIS geolocation when using definitive vs. predicted attitude and ephemeris is routinely less than 100 meters. However, there are situations, particularly before and after spacecraft maneuvers and during space weather events, when the difference can increase up to several kilometers. The recommendation from NASA's Earth Observing System Data and Information System (EOSDIS) is to utilize the standard product data, which is reprocessed using the definitive attitude and ephemeris data.

Known Issues

MCD14DL are NRT products and may be subject to geo-location errors or re-processing. The MODIS NRT product uses predicted rather than the definitive attitude and ephemeris used by MCD14ML (Standard Product) Active Fire / Thermal Anomalies locations (available with a 3 month lag). The difference between the NRT and standard product versions of the product is routinely less than 100 meters, however, there are situations, particularly before and after spacecraft maneuvers and during space weather events, when the difference can increase up to several kilometers. The recommendation from EOSDIS is to utilize the standard product data which is reprocessed using the definitive attitude and ephemeris data. For more information on potential sensor-related anomalies, consult 'quality' on the following URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi.

Further Reading

User Guides, Key Science Publications and General Information:

General Information

Validation

Stories and News Feeds

Read about how near real-time MODIS fire detections are used in NASA's Sensing Our Planet publication, Orbiting Watchtowers
Last Updated
May 3, 2021