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Investigation:

LC-24 (Walker / Reis)

LBA Dataset ID:

LBA_AVHRR_BFP

Originator(s):

ARIMA, E.Y.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

This data set contains an ArcGIS ArcInfo grid (provided in e00 and gridascii format) which provides the number of hot spots detected across the legal Amazon Basin at 5 km resolution by the AVHRR (Advanced Very High Resolution Radiometer) on NOAA 12, 14, 15, 16, 17, and 18 satellites for the entirety of 2001 (January 1 - December 31). Only hot spots detected at night are included. This data is useful for modeling fire events and evaluating human impacts on the Amazon Basin using fire as an indicator of anthropogenic disturbance (Arima et al., 2007).

Beginning Date:

2001-01-01

Ending Date:

2001-12-31

Metadata Last Updated on:

2008-07-17

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Access Instructions:

PUBLIC

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

LBA-ECO LC-24 AVHRR Derived Fire Occurrence, 5-km Resolution, Amazonia: 2001 :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=882

Documentation/Other Supporting Documents:

LBA-ECO LC-24 AVHRR Derived Fire Occurrence, 5-km Resolution, Amazonia: 2001 :  http://daac.ornl.gov/LBA/guides/LC24_Basin_Scale_Hot_Pixels_2001.html

Citation Information - Other Details:

Arima, E. 2008. LBA-ECO LC-24 AVHRR Derived Fire Occurrence, 5-km Resolution, Amazonia: 2001. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/882

Keywords - Theme:

Parameter Topic Term Source Sensor
FIRE OCCURRENCE BIOSPHERE ECOLOGICAL DYNAMICS NOAA-12 AVHRR

Uncontrolled Theme Keyword(s):  BASIN-WIDE, FIRE ANALYSIS, HOT PIXELS, NOAA SATELLITES

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  LEGAL AMAZON 5.25070 -18.04170 -43.53620 -74.84310

Related Publication(s):

Arima, E.Y., C.S. Simmons, R. Walker, and M.A. Cochrane. 2007. Fire in the Brazilian Amazon: A Spatially Explicit Model for Policy Impact Analysis. Journal of Regional Science 47(3).

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data File Description:



ESRI 5 km grid provided in ArcGIS ArcInfo export format as count01.e00 and in gridascii format as count01.asc. The geospatial information associated with this grid is as follows:



Cell size = 5000

Number of Rows = 518

Number of Columns = 662

Data Type = Ingeger

Number of Values = 34

Number of data (bytes) = 8

Minimun value = 1

Maximum Value = 41

Mean Value = 2.900

Standard Deviation = 2.706



Boundary Information:

Xmin = -2203688.419

Xmax = 1106311.581

Ymin = -2006146.120

YMax = 583853.880



Coordinate System Description:

Projection = Sinusoidal

Units = Meters

Spheroid = Defined

Major Axis = 637100.00000

Minor Axis = 637100.00000

Radius of the sphere of reference = 6371000.000

Longitude of central meridian = -54 0 0.000

False easing (meters) = 0.00000

False northing (meters) = 0.00000



Table 1. The number of fire occurrences detected per 5-km cell ranged from 1 to 41. Column 2 shows the total number of cells with a respective number of fire occurrences. Please note that cells/classes for which there were no fire occurrences (zero) are not included in the grid file.



Fire Occurrence per Cell Number of Cells

1 11,884

2 7,819

3 4,198

4 2,795

5 1,738

6 1,106

7 844

8 560

9 395

10 253

11 188

12 139

13 103

14 74

15 59

16 43

17 37

18 19

19 21

20 9

21 12

22 9

23 4

24 8

25 4

26 1

27 3

28 3

29 4

30 2

31 2

33 4

36 1

41 1





Data Application and Derivation:

This data is useful for modeling fire events and evaluating human impacts on the Amazon Basin using fire as an indicator of anthropogenic disturbance (Arima et al., 2007).

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Not available.

Process Description:

Data Acquisition Materials and Methods:

Original point dataset downloaded from INPE\'s website by Rodney Salomao (IMAZON) and processed by E. Arima (arima@hws.edu). Only hot spots detected at night were included. Created by using simple neighborhood statistics (count of events, setting the window frame to rectangular, width = 1 cell, height = 1 cell, units = 1 cell).

References:

Arima, E.Y., C.S. Simmons, R. Walker, and M.A. Cochrane. 2007. Fire in the Brazilian Amazon: A Spatially Explicit Model for Policy Impact Analysis. Journal of Regional Science 47(3).

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