Homer, C., C. Huang, L. Yang, B. Wylie and M. Coan, 2004. Development of a 2001 national land cover database for the United States. Photogrammetric Engineering and Remote Sensing.
The USGS acknowledges the support of NOAA in development of data in this zone.
The NLCD 2001 was created by partitioning the U.S. into mapping zones. A total of 66 mapping zones were delineated within the conterminous U.S. based on ecoregion and geographical characteristics, edge matching features and the size requirement of Landsat mosaics. The Hawaiian mapping zone encompasses the state of Hawaii. Questions about the NLCD Hawaiian mapping zone can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.
By combining the training data with Landsat spectral data and other ancillary data, percent imperviousness prediction models were developed using a regression tree algorithm (named "Cubist"). All data layers used as input for running the Cubist in order to establish the prediction model for imperviousness are listed in the "Supplemental Information" section. Three ancillary data sets were used for urban/suburban delineation masking, which is essential to confine the imperviousness mapping within the developed areas.
After the best combination of possible input data layers had been determined and the final percent impervious layer produced, the urban mask created was used to eliminate those pixels from the final percent impervious file that fall outside identified impervious surface areas. Thus, the impervious pixels identified within the mask were retained, while all non-impervious surface pixels were removed from the final product. This corrected for any small areas of pixels that may have been included as part of the impervious surface layer because their spectral signature was not covered in the Cubist modeling process. Finally, visual inspection of imperviousness layer was made with limited manual editing to eliminate non-urban areas based on area of interest delineated by the mapping team.
Acquisition dates of Landsat ETM+ (TM) scenes used for land cover classification in Hawaiian zone are as follows:
Path62 /Row 46 on 02/14/2000 = Scene ID 70620460214200000
Path62 /Row 46 on 12/30/2000 = Scene ID 70620461230200000
Path62 /Row 46 on 02/03/2002 = Scene ID 70620460203200200
Path62 /Row 47 on 02/14/2000 = Scene ID 70620470214200000
Path62 /Row 47 on 06/05/2000 = Scene ID 70620470605200000
Path62 /Row 47 on 01/31/2001 = Scene ID 70620470131200100
Path62 /Row 47 on 05/23/2001 = Scene ID 70620470523200100
Path62 /Row 47 on 01/02/2002 = Scene ID 70620470102200200
Path62 /Row 47 on 01/05/2003 = Scene ID 70620470105200300
Path62 /Row 47 on 02/22/2003 = Scene ID 70620470222200300
Path63 /Row 46 on 02/05/2000 = Scene ID 70630460205200000
Path63 /Row 46 on 09/16/2000 = Scene ID 70630460916200000
Path63 /Row 46 on 01/06/2001 = Scene ID 70630460106200100
Path63 /Row 46 on 01/22/2001 = Scene ID 70630460122200100
Path63 /Row 46 on 02/23/2001 = Scene ID 70630460223200100
Path63 /Row 46 on 08/02/2001 = Scene ID 70630460802200100
Path63 /Row 46 on 10/05/2001 = Scene ID 70630461005200100
Path63 /Row 46 on 01/09/2002 = Scene ID 70630460109200200
Path63 /Row 46 on 09/22/2002 = Scene ID 70630460922200200
Path63 /Row 46 on 01/28/2003 = Scene ID 70630460128200300
Path64 /Row 45 on 02/12/2000 = Scene ID 70640450212200000
Path64 /Row 45 on 02/28/2000 = Scene ID 70640450228200000
Path64 /Row 45 on 05/24/2002 = Scene ID 70640450524200200
Path64 /Row 45 on 07/27/2002 = Scene ID 70640450727200200
Path65 /Row 45 on 02/19/2000 = Scene ID 70650450219200000
Path65 /Row 45 on 12/19/2000 = Scene ID 70650451219200000
Path65 /Row 45 on 09/01/2001 = Scene ID 70650450901200100
Path65 /Row 45 on 12/22/2001 = Scene ID 70650451222200100
Path66 /Row 45 on 08/02/1999 = Scene ID 70660450802199900
Path66 /Row 45 on 01/09/2000 = Scene ID 70660450109200000
Path66 /Row 45 on 12/26/2000 = Scene ID 70660451226200000
Path66 /Row 45 on 01/11/2001 = Scene ID 70660450111200100
Landsat data and ancillary data used for the imperviousness prediction -
Data Type of DEM composed of 1 band and a Continuous Variable Type.
Data Type of Slope composed of 1 band and a Continuous Variable Type.
Data Type of Aspect composed of 1 band of Categorical Variable Type.
Data type of Position Index composed of 1 band of Continuous Variable Type.
Ancillary data used for urban area masking include: 1. NOAA Defense Meteorological Satellite Program 1 km city light data (1 band) 2. MRLC 1992 classification (1 band) 3. TIGER 2000 roads (1 band)