CA4180012381520150801_20140706_20160711_metadata.txt

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey and the U.S. Forest Service Publication Date: 20160713 Title: Monitoring Trends in Burn Severity assessment of Fire ID: ca4180012381520150801 Geospatial_Data_Presentation_Form: Raster and vector digital data for satellite imagery, fire perimeters and derived datasets.

Publication_Information:

Publication_Place: Sioux Falls, South Dakota or Salt Lake City, Utah Publisher: U.S. Geological Survey and U.S. Forest Service Online_Linkage: http://eros.usgs.gov or http://www.fs.fed.us/eng/rsac/ Description:

Abstract:

Monitoring Trends in Burn Severity (MTBS) is a multi-year project designed to consistently map the burn severity and perimeters of fires across all lands of the United States from 1984 and beyond. The data generated by MTBS will be used to identify national trends in burn severity, providing information necessary to monitor the effectiveness and effects of the National Fire Plan and Healthy Forests Restoration Act. MTBS is sponsored by the Wildland Fire Leadership Council (WFLC), a multi-agency oversight group responsible for implementing and coordination the National Fire Plan and Federal Wildland Fire Management Policies. The project is conducted through a partnership between the U.S. Geological Survey National Center for Earth Resources Observation and Science (EROS) and the USDA Forest Service Remote Sensing Applications Center (RSAC).

The objective of the MTBS program is to provide consistent, 30 meter resolution burn severity data and fire perimeters. The data is intended to serve four primary user groups:

1. National policies and policy makers such as the National Fire Plan and WFLC which require information about long-term trends in burn severity and recent burn severity impacts within vegetation types, fuel models, condition classes, and land management activities.

2. Field management units that benefit from mid to broad scale GIS-ready maps and data for pre- and post-fire assessment and monitoring. Field units that require finer scale burn severity data will also benefit from increased efficiency, reduced costs, and data consistency by starting with MTBS data.

3. Existing data from other comparably scaled programs, such as LANDFIRE, will benefit from MTBS data for validation and updating of geospatial data sets.

4. Academic and agency research entities interested in fire severity data over significant geographic and temporal extents.

MTBS uses image processing and analysis methods similar to those currently used by the USGS and USFS for other post-fire burn severity mapping efforts. The USGS Landsat image archive provides a consistent and continuous source of 30 meter resolution data for mapping burn severity of all fires greater than 1000 acres in the west and 500 acres in the east.

Supplemental_Information:

The MTBS Fire-ID is generated by combining several attributes taken from the fire ignition location and start date. The MTBS Fire-ID is constructed from the two letter state abbreviation, the decimal degree latitude and longitude, both carried to the third decimal place without the decimal point (if less than 100 degrees the longitude is padded with a leading '0'), and the start date formatted as YYYYMMDD (e.g., TX2672909780020110102).

Fire Information MTBS Fire ID: ca4180012381520150801 Fire Name (if known): BEAR Date of Fire: August 01, 2015 Type of Assessment: Extended Acres within Fire Perimeter: 12166

Landsat Path and Row: 46/31 Pre-Fire Landsat Date/Scene ID: Landsat 8 OLI; 2014-07-06 / 80460312014187 Post-Fire Landsat Date/Scene ID: Landsat 8 OLI; 2016-07-11 / 80460312016193

Output Dataset Projection: Albers Equal Area Units: Meters Datum: NAD83 Spheroid: GRS80 1st Standard Parallel: 29 30 00 2nd Standard Parallel: 45 30 00 Central Meridian: -96 00 00 Latitude of Origin: 23 00 00 False Northing: 0 False Easting: 0

Image Subset Corner Coordinates (center of pixel, projected meters)

ULX: -2258142.66249

ULY: 2428547.29623

LRX: -2248617.64344

LRY: 2418946.07703

Rows: 321 Columns: 318 Pixel size: 30 meters

Bounding Box North Latitude: 41.88505 (41 53 6.17553) South Latitude: 41.79331 (41 47 35.92201) East Longitude: -123.67047 (-123 40 13.67757) West Longitude: -123.77805 (-123 46 40.96852)

Latitude and Longitude within Fire Perimeter Latitude: 41.83918 (41 50 21.04877) Longitude: -123.72426 (-123 43 27.32304)

Fire Perimeter Generation Method: Manual dNBR offset value used to calculate RdNBR: 9

Burn severity thresholds No Data Threshold: -970 Increased Greenness: -150 Low Threshold: 50 Moderate Threshold: 319 High Threshold: 610

Product List:

ca4180012381520150801_20140706_L8_refl.tif Subset of Landsat scene used for pre-fire image (Landsat bands 2-7,1,9; Unsigned 8-bit GeoTIFF) ca4180012381520150801_20160711_L8_refl.tif Subset of Landsat scene used for post-fire image (Landsat bands 2-7,1,9; Unsigned 8-bit GeoTIFF) ca4180012381520150801_20140706_20160711_dnbr.tif dNBR used for burn severity analysis and mapping; subset to the fire area (Signed 16-bit GeoTIFF) ca4180012381520150801_20140706_20160711_dnbr6.tif Thematic dNBR; Derived by thresholding dNBR subset (8-bit GeoTIFF) ca4180012381520150801_20140706_20160711_rdnbr.tif Relative dNBR; subset to the fire area (Signed 16-bit GeoTIFF) ca4180012381520150801_20140706_20160711_gapmask.tif Landsat 7 gap mask when applicable; subset to the fire area (pixel value 0 = masked area) ca4180012381520150801_20140706_20160711_burn_bndy.shp Perimeter of detectable fire area derived from satellite imagery (ESRI shapefile) ca4180012381520150801_20140706_20160711_mask.shp Mask for clouds, shadow, snow or anomalies intersecting fire area (ESRI shapefile)

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Currentness_Reference: ground condition

Status:

Progress: Complete Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -123.77805 East_Bounding_Coordinate: -123.67047 North_Bounding_Coordinate: 41.88505 South_Bounding_Coordinate: 41.79331

Keywords:

Theme:

Theme_Keyword_Thesaurus: None Theme_Keyword: Raster digital data Theme_Keyword: U.S. Forest Service Theme_Keyword: USFS Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Monitoring Trends in Burn Severity Theme_Keyword: MTBS Theme_Keyword: Burn Mapping Theme_Keyword: Imagery Theme_Keyword: Fire Theme_Keyword: Landsat

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Category Theme_Keyword: imageryBaseMapsEarthCover

Place:

Place_Keyword_Thesaurus: U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, (Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology Place_Keyword: United States Place_Keyword: U.S.

Place_Keyword: US Place_Keyword: California

Place:

Place_Keyword_Thesaurus: U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, D.C., National Institute of Standards and Technology Place_Keyword: CA

Temporal:

Temporal_Keyword_Thesaurus: None Temporal_Keyword: 1984-present Access_Constraints: FTP data sets are available to any user.

Use_Constraints: There are no restrictions on use, except for reasonable and proper acknowledgement of information sources.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Forest Service Contact_Position: Customer Service Representative Contact_Address:

Address_Type: mailing and physical address Address: USDA Forest Service, Remote Sensing Applications Center Address: 2222 West 2300 South City: Salt Lake City State_or_Province: UT Postal_Code: 84119 Country: USA Contact_Voice_Telephone: 801/975-3750 Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 801/975-3478 Contact_Electronic_Mail_Address: mtbs@fs.fed.us Hours_of_Service: 0800 - 1600 MT, M-F, -7 h GMT Contact_Instructions: http://mtbs.gov/contactus.html Data_Set_Credit: USFS and USGS Native_Data_Set_Environment: ERDAS Imagine, & ArcInfo

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: MTBS geospatial data (both vector and raster) are generated using consistent methods and procedures. The differenced Normalized Burn Ratio (dNBR) image datasets are examined on a fire by fire basis to develop a thresholded, or categorical, burn severity dataset.

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Explanation: MTBS analysts examine the differenced Normalized Burn Ratio (dNBR) image for each fire in the context of remote sensing spectral data and any ancillary information available to the analyst. dNBR image data for each fire are thresholded into classes representing unburned areas; areas of low, moderate, high burn severities; and areas of increased vegetation response. Analysts follow guidelines established by subject matter experts in order to maintain consistency in discerning burn severity thresholds from fire to fire and minimize subjectivity.

Logical_Consistency_Report: These Landsat data are collected from a nominal altitude of 705 kilometers in a near-polar, near-circular, sun-synchronous orbit at an inclination of 98.2 degrees, imaging the same 183-km swath of Earth's surface every 16 days. The pixels representing the bands for the image are in the data set only once.

Completeness_Report:

Fire Perimeter Generation Method: Manual (from metadata)

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: Each Landsat Thematic Mapper image used to create the burn severity assessment was precision terrain-corrected using 3-arc-second digital terrain elevation data (DTED), and georegistered using ground control points. This resulted in a root mean square registration error of less than 1 pixel (30 meters).

Lineage:

Process_Step:

Process_Description: These data products are derived from Landsat data. A pre-fire scene and a post-fire scene are analyzed to create a Differenced Normalized Burn Ratio (dNBR) image. The dNBR image portrays the variations of burn severity within the fire. The pre- and post-fire images are terrain corrected and further processed to convert to top of atmosphere reflectance. The Normalized Burn Ratio (NBR) is computed for each date of imagery using the following formula:

((NIR - SWIR2) / (NIR + SWIR2)) x 1000 = NBR

The differenced NBR is computed by subtracting the post-fire NBR from the pre-fire NBR:

PreNBR - PostNBR = dNBR

Further processing is required to generate the 'Relativized' dNBR (RdNBR). The RdNBR takes into account pre fire conditions related to the amount of vegetation cover vs. bare soil. In one sense, an area of 25% vegetation cover that burns completely should be considered 'high severity' as would an area of 100% cover that burned completely. The dNBR does not allow that distinction. To calculate the RdNBR, the analyst must determine the 'dNBR offset value': the average dNBR value of a nearby area of unburned vegetation (similar to the vegetation that did burn). The RdNBR is calculated as follows:

(dNBR - dNBROffset)/ (Square Root of Absolute Value(PreNBR/1000)) = RdNBR

Higher dNBR and RdNBR values are correlated with more severe burns. The dNBR image is evaluated to determine the threshold value between burned and unburned areas. The perimeter of the fire is delineated using the dNBR and/or post-fire reflectance image. The dNBR image, the pre-fire and post-fire TM images, and a fire perimeter vector file are provided in digital format.

Source_Used_Citation_Abbreviation: TM Process_Date: Unknown Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Forest Service Contact_Position: Customer Service Representative Contact_Address:

Address_Type: mailing and physical address Address: USDA Forest Service, Remote Sensing Applications Center Address: 2222 West 2300 South City: Salt Lake City State_or_Province: UT Postal_Code: 84119 Country: USA Contact_Voice_Telephone: 801/975-3750 Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 801/975-3478 Contact_Electronic_Mail_Address: mtbs@fs.fed.us Hours_of_Service: 0800 - 1600 MT, M-F, -7 h GMT Contact_Instructions: http://mtbs.gov/contactus.html

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Forest Service Contact_Position: Customer Service Representative Contact_Address:

Address_Type: mailing and physical address Address: USDA Forest Service, Remote Sensing Applications Center Address: 2222 West 2300 South City: Salt Lake City State_or_Province: UT Postal_Code: 84119 Country: USA Contact_Voice_Telephone: 801/975-3750 Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 801/975-3478 Contact_Electronic_Mail_Address: mtbs@fs.fed.us Hours_of_Service: 0800 - 1600 MT, M-F, -7 h GMT Contact_Instructions: http://mtbs.gov/contactus.html

Resource_Description: Downloadable Data Distribution_Liability: No warranty expressed or implied is made by the USGS or USFS regarding the use of the data, nor does the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Geo-TIFF Format_Version_Number: 1 Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://mtbs.gov Digital_Form:

Digital_Transfer_Information:

Format_Name: DNBR Geo-TIFF Format_Version_Number: 1 Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://mtbs.gov Digital_Form:

Digital_Transfer_Information:

Format_Name: Shape file Format_Version_Number: 1 Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://mtbs.gov Fees: None Turnaround: Same day Metadata_Reference_Information:

Metadata_Date: 20160713 Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Forest Service Contact_Position:

BranchContact_Address:

Address_Type: mailing and physical address Address: USDA Forest Service, Remote Sensing Applications Center Address: 2222 West 2300 South City: Salt Lake City State_or_Province: UT Postal_Code: 84119 Country: USA Contact_Voice_Telephone: 801/975-3750 Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone: 801/975-3478 Contact_Electronic_Mail_Address: mtbs@fs.fed.us Hours_of_Service: 0800 - 1600 MT, M-F, -7 h GMT