radarmap_v3

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Dr. Jon Chipman

Publication_Date: October 23, 2008

Publication_Time: 5pm

Title: radarmap_v3

Edition: 3

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage:

<ftp://ftp.ssec.wisc.edu/pub/wisconsinview/floods/2008_June/shapefiles/final/radarmap_v3.zip>

Description:

Abstract:

This shapefile represents combined processing output from two RADARSAT-1 images of Wisconsin during the June flooding event of 2008. Imagery dates are June 15 and 16, 2008. ALL WATER IS REPRESENTED including lakes and rivers however the GRIDCODE field differentiates normal water (1) from flood water (2). If the "lyr" file is loaded, the polygons are colored red for flood water and blue for normal water.
This file has NOT been combined with the current spot_landsat_merge2 shapefile.
This is a final product that includes known errors of commission (features identified as water that are not water -- usually smooth fields or hill radar shadows) errors of omission (water not identified -- usually because of tree canopy). There are geometric errors too where the original satellite imagery did not align properly with accepted vector files. Efforts were made to correct this but it was not completely resolved and the top parts of the images were cropped to eliminate the mis-registration error prior to processing.

Purpose:

This data is intended to help with recovery efforts of Wisconsin Emergency Management and other State, Federal, and County government entities. Because of its complexity it should be used with caution. It should be used to identify general areas of concern for further study or ground survey, not as a definitive result. As subsets of this product are compared with field studies and additional "ground truth" data (such as 2008 1-meter NAIP available from <http://www.wisconsinview.org>), higher quality products will result. Taken as, this is a "best guess" product and should be treated as such.

Supplemental_Information:

Image processing by Dr. Jon Chipman of Dartmouth College, data acquisition made possible through activation of the International Charter (Call #208) by Wisconsin Emergency Management and the US Geological Survey. Source imagery © Canadian Space Agency/Agence spatiale canadienne (2008)
See PDF report included in Zip bundle for details on processing technique and ground truthing. Here are the general steps used:
Dr. Chipman used ENVI/IDL to process the imagery and produced a single shapefile showing all water as either normal water or flood water. These are the steps he used:
(1) Adjusted coordinates to fit more closely with 1:24k maps (affine shift needed). (2) Reprojected from UTM zone 15 to WTM83 (Wisconsin State Standard). (3) Subset Wisconsin area (image overlapped parts of Illinois, Iowa, Minnesota). (4) Ran an "enhanced frost filter" (5x5 kernel) to reduce impact of speckle noise. (5) Classified pixels with values in the range of 1-35 as water. (6) Distinguished flooding from "normal" water pixels (lakes, etc.) using WISCLAND land cover data set (1992 data published in 1998). (6a) Eliminated any "flooding" on steep slopes (radar hill shadows). (7) Discarded any "clumps" smaller than 5 pixels. (8) Exported to GeoTIFF (blue = normal water, red = potential flooding). (9) Exported to shapefile and layer file.
Dr. Chipman merged the two images and repeated these steps for the final version.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: June 15, 2008

Time_of_Day: n/a

Single_Date/Time:

Calendar_Date: June 16, 2008

Time_of_Day: n/a

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.284353

East_Bounding_Coordinate: -87.675962

North_Bounding_Coordinate: 43.986364

South_Bounding_Coordinate: 42.478004

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: flood

Theme_Keyword: floods

Theme_Keyword: flooding

Theme_Keyword: Wisconsin Emergency Management

Theme_Keyword: WisconsinView

Theme_Keyword: RADARSAT-1

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Wisconsin

Temporal:

Temporal_Keyword_Thesaurus: none

Temporal_Keyword: 2008

Temporal_Keyword: June

Access_Constraints: This is public domain data.

Use_Constraints: None. See "abstract" and "purpose" for limits on accuracy

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dr. Sam Batzli

Contact_Organization: WisconsinView, Space Science & Engineering Center, UW-Madison

Contact_Position: Assistant Scientist

Contact_Address:

Address_Type: mailing address

Address: 1225 W Dayton St

City: Madison

State_or_Province: WI

Postal_Code: 53706

Country: USA

Contact_Voice_Telephone: 608-263-3126

Contact_TDD/TTY_Telephone: none

Contact_Facsimile_Telephone: 608-262-5974

Contact_Electronic_Mail_Address: sabatzli@wisc.edu

Contact_Instructions: Try e-mail first.

Browse_Graphic:

Browse_Graphic_File_Name:

<ftp://ftp.ssec.wisc.edu/pub/wisconsinview/floods/2008_June/shapefiles/final/radarmap_v3_browse.jpg>

Browse_Graphic_File_Description: Browse graphic from ArcCatalog screen-shot.

Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

Image processing by Dr. Jon Chipman of Dartmouth College, data acquisition made possible through activation of the International Charter (Call #208) by Wisconsin Emergency Management and the US Geological Survey.

Security_Information:

Security_Classification_System: none

Security_Classification: none

Security_Handling_Description: none

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation:

D:\flooding\shapefiles\spot_landsat_merge2\spot_landsat_merge2.shp.xml

Process_Date: 20081023

Process_Time: 16384700

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 21571

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Transverse Mercator

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -90.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 520000.000000

False_Northing: -4480000.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000000

Ordinate_Resolution: 0.000000

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983_HARN

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: radarmap_v3

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: ID

Attribute_Definition: Polygon number from merge efforts.

Attribute_Definition_Source: Chipman

Attribute:

Attribute_Label: GRIDCODE

Attribute_Definition:

Used when raster converted to vector as a way to differentiate land from water. Only water is included in this shapefile. 1=Water 2=Flood Water

Attribute_Definition_Source: Chipman

Distribution_Information:

Resource_Description: Downloadable Data. Visit <http://www.wisconsinview.org>

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 4.097

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<ftp://ftp.ssec.wisc.edu/pub/wisconsinview/floods/2008_June/shapefiles/final/radarmap_v3.zip>

Metadata_Reference_Information:

Metadata_Date: 20081023

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dr. Sam Batzli

Contact_Organization: WisconsinView, Space Science & Engineering Center, UW-Madison

Contact_Position: Assistant Scientist

Contact_Address:

Address_Type: mailing address

Address: 1225 W Dayton St

City: Madison

State_or_Province: WI

Postal_Code: 53706

Country: USA

Contact_Voice_Telephone: 608-263-3126

Contact_TDD/TTY_Telephone: none

Contact_Facsimile_Telephone: 608-262-5974

Contact_Electronic_Mail_Address: sabatzli@wisc.edu

Contact_Instructions: Try e-mail first.

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile