MODIS/Aqua Thermal Anomalies/Fire Daily L3 Global 1km SIN Grid


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EDG Data Set Name Granule Shortname

MODIS/Aqua Thermal Anomalies/Fire Daily L3 Global 1km SIN Grid MYD14A1

Version Acquisition Range Science Quality Status

V003 March 6 2003 (2003065) - February 1 2004 (2004032) Provisional

V004 July 4 2002 (2002185) Provisional

Terra/MODIS Product Data Set Characteristics
Area = ~ 10° x 10° lat/long
Image Dimensions = 3 (1200X1200X8 row/column/day)
Average File Size = 55 MB
Resolution = 1 kilometer
Projection = Sinusoidal
Data Type Fire Mask = 8-bit unsigned integer
Data Format = HDF-EOS
Science Data Sets (SDSs) = 2

Pixel Value Classes Color

0 missing input data Black

1 not processed (obsolete) Black

2 not processed (obsolete) Black

3 water Dk Blue

4 cloud Lt Blue

5 non-fire Green

6 unknown Purple

7 fire (low-confidence) Yellow

8 fire (nominal-confidence) Orange

9 fire (high-confidence) Red

Product Description
MYD14A1 is one of MODIS' 3-D data products. In addition to X- and Y-dimensions, Level 3 Daily fire products include 8 separate days of data detailing pixels according to their level of confidence as fires. The Fire Mask contains eight, band (day) sequential, 1200 x 1200 images of fire data representing consecutive days of data collection. The images above have been pseudo-colored to display one of the eight days of fire data in a granule of MYD14A1.

The Aqua MODIS instrument acquires data twice daily (2:30 pm and 2:30 am), as does the Terra MODIS (10:30 am and 10:30 pm). These four daily MODIS observations will advance global fire monitoring with 1 km resolution fire channels centered at the 4 and 11 micrometer wavelengths. MODIS data will also be used to monitor burn scars, vegetation type and condition, smoke aerosols, water vapor and clouds for overall monitoring of the fire process and its effects on ecosystems, the atmosphere, and climate. A data base of active fire products will be generated and archived at 1 km resolution and summarized on a grid of 10 km and 0.05° latitude/longitude at daily, 8-day, and monthly intervals. It includes the fire occurrence and location, the rate of emission of thermal energy from the fire and a rough estimate of the smoldering/flaming ratio. This information will be used in monitoring the spatial and temporal distribution of fires in different ecosystems, detecting changes in fire distribution and identifying new fire frontiers, wild fires, and changes in the frequency of the fires or their relative strength.

The image shown is an example of the Level 3 Daily Thermal Anomalies/Fire product, MYD14A1. The lower image displays a subset of the top left corner of the upper image to emphasize fire pixels, which are classified according to the table above. The data were acquired on February 8, 2004 in the Llanos region in Venezuela and Columbia where agricultural management burns were occuring.

NOTE: These products are provisional, meaning that product quality may not be optimal. Incremental product improvements are still occurring, and users are urged to contact MODIS Science Team representatives prior to use of the data in publications. These data are likely to be replaced when the validated product becomes available.

SDS Units Data Type Fill Value Valid Range

algorithm QA of most confident detected fire Bit 32-bit unsigned integer 3 0

most confident detected fire Day 1 Bit 8-bit unsigned integer 0 0 - 9

Day 2 Bit 8-bit unsigned integer 0 0 - 9

Day 3 Bit 8-bit unsigned integer 0 0 - 9

Day 4 Bit 8-bit unsigned integer 0 0 - 9

Day 5 Bit 8-bit unsigned integer 0 0 - 9

Day 6 Bit 8-bit unsigned integer 0 0 - 9

Day 7 Bit 8-bit unsigned integer 0 0 - 9

Day 8 Bit 8-bit unsigned integer 0 0 - 9

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New Item Retrieve the MYD14A1v4 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e0dps01u.ecs.nasa.gov:22000/OPS/drill?attrib=esdt&esdt;=MYD14A1.4&group;=MOLA
Via FTP Directory: ftp://e0dps01u.ecs.nasa.gov/MOLA/MYD14A1.004/

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( http://edcimswww.cr.usgs.gov/pub/imswelcome/)

EOS Data Gateway Search Tips

Source: Aqua

Sensor: MODIS

Dataset: MODIS/Aqua Thermal Anomalies/Fire Daily L3 Global 1km SIN Grid

Spatial: HORIZONTALTILENUMBER Max/Min VERTICALTILENUMBER Max/Min

Geographic Extent: Type Lat/Long Range or Draw on Map

Temporal Extent: 2003-03-06 to 2004-02-01 (V003); 2002-07-04 to present (V004)

Product Information

Product Description
(http://modis-fire.gsfc.nasa.gov/)

User Guide
(http://modis-fire.gsfc.nasa.gov/)

Algorithm Theoretical Basis Document (ATBD)
(http://modis.gsfc.nasa.gov/data/atbd/land_atbd.html)

MODIS Standard Data Products Catalog
(http://modis.gsfc.nasa.gov/data/dataproducts.html)

EOS Data Products Handbook Volume 2 (2000)
(http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/data_products/vol2.php )

Contact Information

LP DAAC User Services
U.S. Geological Survey
EROS Data Center
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Sioux Falls, SD 57198-0001

Phone: 605-594-6116

Toll Free: 866-573-3222

866-LPE-DAAC

Fax: 605-594-6963

Email: edc@eos.nasa.gov

Web: http://LPDAAC.usgs.gov

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URL: http://LPDAAC.usgs.gov/modis/myd14a1v4.asp
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Last Update: Wednesday, March 10, 2004
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