1999 Landsat Thematic Mapper 5 Climate Data Record Path 22 and Rows 39 and 40 surface reflectance and Normalized Difference Vegetation Index (NDVI) data of southeastern Louisiana marshes for phenology study

The data file consists of Landsat Surface Reflectance Climate Data Record (Landsat CDR), generated with the Landsat Ecosystem Disturbance Adaptive Processing System (LEDAPS) atmosphere correction tool and Normalized Difference Vegetation Index (NDVI) datasets of the southeastern Louisiana marshes (Path 22 and Rows 39 and 40) for the year 1999 processed for the phenology study. The projection is the Universal Transverse Mercator (UTM Zone 15 North). The datum is WGS-1984. Spatial resolution is 28.5 meters by 28.5 meters resampled to 30 meters by 30 meters. Image dates included are 1999-01-10, 1999-01-26, 1999-02-11, 1999-05-02, 1999-05-18, 1999-06-19, 1999-07-29, 1999-08-06, 1999-08-14, 1999-09-07, 1999-09-15, 1999-09-23, 1999-10-01, 1999-10-25, 1999-11-02, 1999-11-10, 1999-11-18, 1999-11-26, 1999-12-28. All files have individual ISO 19115 .xml metadata files. The dataset consists of nine stacked files. The wavelengths of the first six bands in micrometers are as follows: Band 1, visible blue band = 0.452-0.518, Band 2, visible green band = 0.528-0.609, Band 3, visible red band = 0.626-0.693, Band 4, near infrared band (NIR) = 0.776-0.904, Band 5, short-wave infrared band 1 = 1.567-1.784, and band 6, short-wave infrared band 2 = 2.097-2.349 (Chander et al. 2009). Band 7 is a water mask with a value of 0.0001. Band 8 is the full or composite mask consisting of a cloud mask with a value of 0.0004, a cloud shadow mask with a value of 0.0002, and a water mask with a value of 0.0001 value. Band 9 is NDVI calculated with the equation NDVI = (rho red – rho NIR)/( rho red + rho NIR) where rho red and rho NIR represent the surface reflectance of the red and NIR bands. The six surface reflectance files (bands 1-6) and the two mask files (bands 7 and 8) are Landsat CDR data files downloaded from the USGS EarthExplorer website and rescaled to surface reflectance values. Due to overcorrection by the atmospheric correction procedure, the surface reflectance values in the dataset, which should range between 0.0000 and 1.0000 by definition, may be less than zero and greater than 1. Dataset values equal to or less than 0.0000 and greater than 1.0000 are masked and reset to 0.0001 and 1.0000 respectively before NDVI is calculated. Bands 1-6 in the dataset are composite-masked. Water, cloud, and cloud shadow masks created by LEDAPS team (i.e. band 8) were applied to Landsat band data on bands 1-6. Water, cloud and cloud shadow pixels are masked to the value 0.0000 on bands 1-6. The application of the water mask and cloud-shadow mask reduces misclassification of water pixels as land. The application of the cloud mask reduces the misclassification of land pixels as water. Additional information on Landsat CDR data and the LEDAPS surface reflectance product are available at http://landsat.usgs.gov/CDR_LSR.php and http://ledaps.nascom.nasa.gov/docs/pdf/SR_productdescript_dec06.pdf respectively. Processing by Mo Yu, J.C. Alexis Riter, and Michael S. Kearney of the Department of Environmental Science and Technology, University of Maryland, College Park, MD 20742. References Chander, G., R.L. Markham and D.L. Helder, 2009, Summary of current radiometric calibration coefficients for Landsat MSS, TM, ETM+ and EO-1 ALI sensors. http://landsat.usgs.gov/CDR_LSR.php last obtained 29 May 2014. http://ledaps.nascom.nasa.gov/docs/pdf/SR_productdescript_dec06.pdf last obtained 28 May, 2014.