Identification_Information Citation Citation_Information Originator: NOAA Coastal Services Center Publication_Date: 1997 Title: New Technologies for Coastal Mapping Subtitle: Hurricane Erin Sea Surface Temperature Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information Publication_Place: Charleston, South Carolina Publisher: NOAA Coastal Services Center Description Abstract: These data consist of retrospective sea surface temperature (SST) images from the period around the landfall of hurricane Erin. This imagery was derived from the advanced very high resolution radiometer (AVHRR) sensor aboard the NOAA series polar-orbiting satellites and covers the coastal areas of the Gulf of Mexico. 9 unique SST images are included on the CD-ROM during the time period surrounding Erin's landfall from July 24 to August 4, 1995. Image resolution is 1.3 km. Purpose: The purpose of these data is to provide simplified, rapid access to the conditions of SST before and after hurricane Erin. These images can assist and inform marine scientists and coastal fisheries resource managers of typical synoptic surface oceanographic structure. Supplemental_Information: The original hurricane SST imagery was cropped, georeferenced, navigated and registered to a continental outline (vector). Subsequently it was processed to add a landmask, temperature scale, and annotation. The data imagery is contained in a GEOTIFF image graphics file. Also available on the CD-ROM is a freeware version of PCI Handler (one compiled and one compressed) for viewing the GEOTIFF images. The inclusion of any software does not imply endorsement. Time_Period_of_Content Time_Period_Information Range_of_Dates/Times Beginning_Date: July 24, 1995 Ending_Date: August 4, 1995 Currentness_Reference: Time and Date of AVHRR scene and ground condition Status Progress: Complete Maintenance_and_Update_Frequency: none planned Spatial_Domain Bounding_Coordinates West_Bounding_Coordinate: 89.90691W East_Bounding_Coordinate: 78.07965W North_Bounding_Coordinate: 31.79490N South_Bounding_Coordinate: 25.94527N Coordinate_Corner_Locations: Locations are the edges of bounding coordinates not the centers Keywords Theme Theme_Keyword_Thesaurus: none Theme_Keyword: Sea Surface Temperature Theme_Keyword: Advanced Very High Resolution Radiometer (AVHRR) Theme_Keyword: High Resolution Picture Transmission (HRPT) Theme_Keyword: remote-sensing Theme_Keyword: satellite Theme_Keyword: hurricane Theme_Keyword: coastal erosion Theme_Keyword: oceanography Theme_Keyword: ocean currents Place Place_Keyword_Thesaurus: none Place_Keyword: United States of America Place_Keyword: Southeast Place_Keyword: Gulf of Mexico Place_Keyword: Florida Place_Keyword: Vero Beach Place_Keyword: Pensacola Access_Constraints: none Use_Constraints: Data set is not for use in litigation or suitable for use in navigation. Commercial use is prohibited. Point_of_Contact Contact_Organization: NOAA Coastal Services Center Contact_Person: John Brock Contact_Address Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 29405-2413 Contact_Voice_Telephone: (803) 974-6200 Contact_Electronic_Mail_Address: crs@csc.noaa.gov Data_Quality_Information Attribute_Accuracy Attribute_Accuracy_Report: The calculation of SST from satellite derived thermal infrared brightness temperatures is performed using a multi-channel sea surface temperature (MCSST) algorithm. This algorithm uses a difference of AVHRR channel 4 and 5 brightness temperatures to estimate a correction for atmospheric water vapor content, the largest error source in the computation of SST. This algorithm is empirical in nature and uses coefficients derived from regressing satellite radiance against in-\ situ global buoy SST observations. For further information visit the NESDIS homepage (http://ns.noaa.gov/NESDIS/NESDIS_Home.html) and the NOAA Satellite Information System (NOAASIS). Cloud free regions within these images are generally accurate to within +/- 0.5 degC. Noise limited temperature precision is approximately 0.2 degC. Logical_Consistency_Report: Post processing analysis indicated all image files contained SST data and were consistently geo-located through hand navigation and registration to within one pixel (~ 1 km). Completeness_Report: Images in this data set were chosen based on being relatively cloud free and having good registration accuracy. A total of 13 images were processed with 9 selected for inclusion on the CD-ROM based on the above criteria. Positional_Accuracy Horizontal_Positional_Accuracy: The grid size for all the images is 850x450 pixels. Lineage Source_Information Source_Citation Citation_Information Originator: NOAA Publication_Date: Acquisition date of actual image Title: New Technologies for Coastal Mapping Subtitle: Hurricane Erin Sea Surface Temperature Edition: NA Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information Publication_Place: Silver Springs, Maryland Publisher: NOAA Source_Scale_Denominator: unknown Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content Time_Period_Information Range_of_Dates/Time Calender_Date: July 24 - August 4, 1995 Time_of_Day: various Source_Currentness_Reference: Dates of images Source_Citation_Abbreviation: AVHRR Source_Contribution: Sea Surface Temperature Process_Description: The USGS program AVHRRMAP7 was used to produce SST maps from the AVHRR data in level 1b format. The image data were scaled into a temperature range of -5 to 37.5 degC. Each image was cropped for the specific viewing area and then hand navigated to a continental outline of the outline of the coast. A raster landmask the hurricane ground track, text annotation and the temperature scale (color bar)were "burned" into each image. Images were converted to JPEG and TIFF format. The raster cell (pixel) values in the JPEG image are radiometrically meaningless. The colors in the image are representative of temperature only as they relate to the temperature scale values. The pixel values in the TIFF images are radiometrically correct. As one byte integers they represent temperature counts from 0-255 that encompass a temperature range of -5 to 37.5 degC (i.e., SST = (DN-30)/6). Land is always represented as value 254 (gray) and coastline and state boundaries as 0 (black). Areas of no data are also represented as value 0 while clouds are represented by value 255 (white). Process_Date: 1997 Spatial_Data_Organization_Information Direct_Spatial_Reference_Method: Raster Raster_Object_Information Raster_Object_type: Pixel Row_Count: 450 Column_Count: 850 Spatial_Reference_Information Horizontal_Coordinate_System_Definition Geographic Latitude Resolution: 1.3 km Longitude Resolution: 1.3 km Geographic_Coordinate_Units: meters Map_Projection Map_Projection_Name: Albers Conical Equal Area Standard_Parallels: 20 (1st) and 45 (2nd) Longitude_of_Central_Meridian: 0 Longitude_of_Projection_Origin: -80 Latitude_of_Projection_Origin: 30 False_Easting: 0.0 False_Northing: 0.0 Geodetic_Model: unknown Horizontal_Datum_Name: unknown Ellipsoid_Name: Clark 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: unknown Entity_and_Attribute_Information Overview_Description Entity_and_Attribute_Overview: AVHHR SST data Entity_and_Attribute_Detail_Citation Originator: NOAA Coastal Services Center Publication_Date: 1997 Title: New Technologies for Coastal Mapping Subtitle: Hurricane Erin Sea Surface Temperature Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information Publication_Place: Charleston, South Carolina Publisher: NOAA Coastal Services Center Distribution_Information Distributor Contact_Information Contact_Organization_Primary Contact_Organization: NOAA Coastal Services Center Contact_Person: John Brock Contact_Address Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 29405-2413 Contact_Voice_Telephone: (803) 974-6200 Contact_Electronic_Mail_Address: crs@csc.noaa.gov Resource_Description: CD-ROM Distribution_Liability: none Metadata_Reference_Information Metadata_Date: 19970909 Metadata_Contact Contact_Information Contact_Organization_Primary Contact_Organization: NOAA Coastal Services Center Contact_Person: John Brock Contact_Address Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 29405-2413 Contact_Voice_Telephone: (803)974-6200 Contact_Electronic_Mail_Address: crs@csc.noaa.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608