VIIRS-AF Active Fire Detections for CONUS (2019) - Through 07/19/2019 2100 MDT

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: USDA Forest Service, Geospatial Technology and Applications Center
Publication_Date: 20190719
Title:
VIIRS-AF Active Fire Detections for the CONUS (2019) - Through 07/19/2019 2100 MDT
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Salt Lake City
Online_Linkage:
<https://fsapps.nwcg.gov/afm/data_viirs/fireptdata/viirs-af_fire_2019_200_conus.e00.gz>
<https://fsapps.nwcg.gov/afm/data_viirs/fireptdata/viirs-af_fire_2019_200_conus_shapefile.zip>
Description:
Abstract:
This coverage represents cumulative year 2019 VIIRS fire detections for the geographic area covering the continental United States including a 50km buffer around the periphery. The detections are obtained using S-NPP VIIRS data collected and processed as a cooperative effort between the USDA Forest Service Geospatial Technology and Applications Center, NASA-Goddard Space Flight Center Direct Readout Laboratory and participating ground stations.
Purpose:
These fire detection data are collected for the USDA Forest Service Active Fire Mapping Program (https://fsapps.nwcg.gov/afm). These data are intended to provide a synoptic view of cumulative detected fire activity over the specified time period. These data are collected at a spatial resolution of 750 meters and therefore are only intended for geographic display and analysis at the national and regional scales. No responsibility is assumed by the USDA Forest Service in the use and application of these data by end users.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20190101
Ending_Date: 20190719
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: Daily
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -124.304
East_Bounding_Coordinate: -68.368
North_Bounding_Coordinate: 49.42000000093
South_Bounding_Coordinate: 25.41500000073
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Active
Theme_Keyword: Fire
Theme_Keyword: Detection
Theme_Keyword: Wildfire
Theme_Keyword: VIIRS
Theme_Keyword: Satellite
Theme_Keyword: Rapid Response
Theme_Keyword: NASA
Theme_Keyword: NASA DRL
Theme_Keyword: IPOPP
Theme_Keyword: S-NPP
Theme_Keyword: Suomi NPP
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: CONUS
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Fire
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: None
Access_Constraints: None.
Use_Constraints:
These data are updated multiple times daily throughout the year, therefore it is recommended that users reacquire the data from the USDA Forest Service as necessary. The dataset is current through the Julian date and time stamp specified. For example, viirs-af_fire_2019_101.e00.gz means that the data set contains data from January 1, 2019 through day 101 of the year 2019 (April 11, 2019). Acknowledgement of the USDA Forest Service Geospatial Technology and Applications Center and NASA would be appreciated in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Geospatial Technology and Applications Center
Contact_Position: Rapid Disturbance Assessment and Services Program Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 2222 W. 2300 S.
City: Salt Lake City
State_or_Province: Utah
Postal_Code: 84119
Country: USA
Contact_Voice_Telephone: 801-975-3737
Contact_Facsimile_Telephone: 801-975-3478
Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Security_Handling_Description: None
Native_Data_Set_Environment: ESRI ArcGIS-Arc/INFO

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Active fire detection attributes are derived from the VIIRS algorithm provided by NASA. The VIIRS-AF algorithm and the VIIRS Active Fires Applications Related Product (ARP) provided by NOAA are two distinct products. VIIRS-AF is developed using the collection 6 (C6) version MODIS active fire algorithm and provides the same fire attributes (fire location, detection confidence, estimates of fire radiative power [FRP]). The NOAA VIIRS Active Fires product is currently based on the C4 version of the MODIS active fire algorithm and provides an active fire mask with no attributes defining fire characteristic. Other distinct product differences also relate to data processing over oceans to detect gas flares and other sources of anthropogenic activities, data quality flags, product metadata and data format. For additional information on the NASA VIIRS-AF algorithm, see NASA-DRL science processing algorithm descriptions.
Logical_Consistency_Report:
S-NPP VIIRS provides complete coverage of the mid to higher latitudes two times daily. S-NPP crosses the equator on an ascending node at 1:30 PM (local time) and also on a descending node at 1:30 AM, similar to Aqua MODIS. VIIRS data are acquired for the majority of the United States and southern Canada in near real time at the USDA Forest Service Geospatial Technology and Applications Center (GTAC) in Salt Lake City. VIIRS data for the eastern United States, Alaska, Hawaii and the rest of Canada are acquired near real-time from other selected VIIRS ground stations. VIIRS data are processed within minutes of acquisition at GTAC and other VIIRS ground stations to identify and extract active fire locations.
Completeness_Report:
The active fire detections are discerned using the 750 meter Moderate (M) thermal bands of VIIRS. Data processing is conducted using the NASA (International Polar Orbiter Processing Package (IPOPP) framework to process and compile a series of land, ocean and atmosphere VIIRS science products in near real-time, include active fire detections. Active fire detections are provided as the centroids of the 750 meter pixels containing detected fire activity and compiled into daily GIS layers with all available fire attributes. Identification of a VIIRS pixel as "fire" does not necessarily mean that the entire area represented by the pixel is on fire. The identification of a fire can be the result of a small hot/intense fire a or fire activity over a larger area. At this time, there is no way to discriminate between these two possibilities.

Fires smaller than the 750 meter resolution of VIIRS Moderate (M) bands can be detected. Validation of the VIIRS-AF product and estimates of minimum detectable fire size and temperature is ongoing. Several factors may affect the ability to detect fire activity, including timing of fire activity at the time of satellite overpass; cloud cover, heavy smoke and other atmospheric obscurations above the fire; satellite view angle or the location of the fire on the swath of imagery collected by satellite; local land cover heterogeneity, etc.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Active fire detection points represent the centroid of the 750 meter pixel for a fire detection. Points are accurate to at least +/- 75 meters.
Lineage:
Source_Information:
Type_of_Source_Media: computer program
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20190101
Ending_Date: 20190719
Source_Currentness_Reference: publication date
Source_Contribution:
VIIRS-AF active fire detections derived from NASA International Polar Orbiter Processing Package (IPOPP) used for USDA Forest Service Active Fire Mapping.
Process_Step:
Process_Description:
VIIRS-AF fire detection data are created through the following general steps:

1) Process raw VIIRS telemetry data (RDRs) to generate a series of level 2 (EDR) science products in HDF4 format using IPOPP, including VIIRS-AF active fire data.

2) Active fire locations and attribute are extracted from level 2/EDR VIIRS-AF HDFs to ASCII output and compiled into daily GIS layers.

3) VIIRS-AF active fire detection GIS datasets are transformed from a WGS84 datum to NAD83 datum.


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 21162
SDTS_Terms_Description:

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.001
Longitude_Resolution: 0.001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: VIIRS-AF_FIRE_2019_200_CONUS.PAT
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: AREA
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Area is always zero for point coverages. Values are automatically generated.
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Perimeter of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Perimeter is always zero for point coverages. Values are automatically generated.
Attribute:
Attribute_Label: VIIRS-AF_FIRE_2019_200_CONUS#
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Range_Domain:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: VIIRS-AF_FIRE_2019_200_CONUS-ID
Attribute_Definition: User-defined feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Range_Domain:
Attribute:
Attribute_Label: LAT
Attribute_Definition: Latitude of active fire detection
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 24.0
Range_Domain_Maximum: 50.0
Attribute_Units_of_Measure: Decimal Degrees (WGS84)
Attribute:
Attribute_Label: LONG
Attribute_Definition: Longitude of active fire detection
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -125.5
Range_Domain_Maximum: -66.0
Attribute_Units_of_Measure: Decimal Degrees (WGS84)
Attribute:
Attribute_Label: DATE
Attribute_Definition: Date of active fire detection
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1/1/2019
Range_Domain_Maximum: 07/19/2019 2100 MDT
Attribute_Units_of_Measure: Calendar Date
Attribute:
Attribute_Label: JULIAN
Attribute_Definition: Julian date of active fire detection
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 200
Attribute_Units_of_Measure: Julian Date
Attribute:
Attribute_Label: GMT
Attribute_Definition: Time of active fire detection
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0000
Range_Domain_Maximum: 2400
Attribute_Units_of_Measure: Greenwich Mean Time or Universal Time Coordinated
Attribute:
Attribute_Label: TEMP
Attribute_Definition: Measured brightness temperature in 4 micron band (M13)
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure: Degrees Kelvin
Attribute:
Attribute_Label: SPIX
Attribute_Definition: X dimension or cross track dimension of the VIIRS pixel
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure: Kilometers
Attribute:
Attribute_Label: TPIX
Attribute_Definition: Y dimension or along track dimension of the VIIRS pixel
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure: Kilometers
Attribute:
Attribute_Label: SRC
Attribute_Definition: Ground station and/or processing source of VIIRS data and fire detections
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gsfc-drl
Enumerated_Domain_Value_Definition: NASA-Goddard Space Flight Center Direct Readout Laboratory
Enumerated_Domain:
Enumerated_Domain_Value: GTAC
Enumerated_Domain_Value_Definition: USDA Forest Service Geospatial Technology and Applications Center
Enumerated_Domain:
Enumerated_Domain_Value: osu
Enumerated_Domain_Value_Definition: Oregon State University
Enumerated_Domain:
Enumerated_Domain_Value: ssec
Enumerated_Domain_Value_Definition: University of Wisconsin Space Science Engineering Center
Enumerated_Domain:
Enumerated_Domain_Value: uaf
Enumerated_Domain_Value_Definition: University of Alaska-Fairbanks
Attribute:
Attribute_Label: SAT_SRC
Attribute_Definition: Satellite source of VIIRS data and fire detections
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: S-NPP
Enumerated_Domain_Value_Definition: Suomi National Polar-orbiting Partnership
Attribute:
Attribute_Label: CONF
Attribute_Definition: Detection confidence
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: Percent
Attribute:
Attribute_Label: FRP
Attribute_Definition: Estimated fire radiative power
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure: MegaWatts (MW)

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service Geospatial Technology and Applications Center
Contact_Address:
Address_Type: mailing and physical address
Address: 2222 W. 2300 S.
City: Salt Lake City
State_or_Province: Utah
Postal_Code: 84119
Country: USA
Contact_Voice_Telephone: 801-975-3750
Contact_Facsimile_Telephone: 801-975-3478
Resource_Description: Downloadable Data
Distribution_Liability:
Although these data have been used by the USDA Forest Service, the USDA Forest Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and is updated daily throughout the current year.

It is the responsibility of the data end user to apply the data appropriately and consistently within the limitations of geospatial data of these scale and accuracy. Using the data for other than their intended purpose may yield inaccurate or misleading results. The USDA Forest Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from authoritative sources and not indirectly through secondary sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the USDA Forest Service, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.

The USDA Forest Service reserves the right to correct, update or modify this data and related materials without notification.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Arc/INFO export and ESRI Shapefile
File_Decompression_Technique: Gnu Zip
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://fsapps.nwcg.gov/afm/data_viirs/fireptdata/viirs-af_fire_2019_200_conus.e00.gz>
<https://fsapps.nwcg.gov/afm/data_viirs/fireptdata/viirs-af_fire_2019_200_conus_shapefile.zip>
Fees: None

Metadata_Reference_Information:
Metadata_Date: 20050411
Metadata_Review_Date: 20050410
Metadata_Future_Review_Date: Annually
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: USDA Forest Service Geospatial Technology and Applications Center
Contact_Position: Rapid Disturbance Assessment and Services Program Leader
Contact_Address:
Address_Type: mailing and physical address
Address: 2222 W. 2300 S.
City: Salt Lake City
State_or_Province: Utah
Postal_Code: 84119
Country: USA
Contact_Voice_Telephone: 801-975-3737
Contact_Facsimile_Telephone: 801-975-3478
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.7.3 on Fri Apr 11 10:10:49 2005