Landsat 8-9 Bathymetric with DRA

This layer includes Landsat 8 and 9 imagery rendered on-the-fly as Bathymetric with DRA for use in visualization and analysis. This layer is time enabled and includes a number of band combinations and indices rendered on demand. The imagery includes eight multispectral bands from the Operational Land Imager (OLI) and two bands from the Thermal Infrared Sensor (TIRS). It is updated daily with new imagery directly sourced from the USGS Landsat collection on AWS. Geographic Coverage Global Land Surface. Polar regions are available in polar-projected Imagery Layers: Landsat Arctic Views and Landsat Antarctic Views. Temporal Coverage This layer is updated daily with new imagery. Working in tandem, Landsat 8 and 9 revisit each point on Earth's land surface every 8 days. Most images collected from January 2015 to present are included. Approximately 5 images for each path/row from 2013 and 2014 are also included. Product Level The Landsat 8 and 9 imagery in this layer is comprised of Collection 2 Level-1 data. The imagery has Top of Atmosphere (TOA) correction applied. TOA is applied using the radiometric rescaling coefficients provided the USGS. The TOA reflectance values (ranging 0 – 1 by default) are scaled using a range of 0 – 10,000. Image Selection/Filtering A number of fields are available for filtering, including Acquisition Date, Estimated Cloud Cover, and Product ID. To isolate and work with specific images, either use the ‘Image Filter’ to create custom layers or add a ‘Query Filter’ to restrict the default layer display to a specified image or group of images. Visual Rendering Default rendering is Bathymetric (bands 4,3,1) with Dynamic Range Adjustment (DRA), useful in bathymetric mapping applications. Raster Functions enable on-the-fly rendering of band combinations and calculated indices from the source imagery. The DRA version of each layer enables visualization of the full dynamic range of the images. Other pre-defined Raster Functions can be selected via the renderer drop-down or custom functions can be created. This layer is part of a larger collection of Landsat Imagery Layers that you can use to perform a variety of mapping analysis tasks. Pre-defined functions: Natural Color with DRA, Agriculture with DRA, Geology with DRA, Color Infrared with DRA, Bathymetric with DRA, Short-wave Infrared with DRA, Normalized Difference Moisture Index Colorized, NDVI Raw, NDVI Colorized, NBR Raw 15 meter Landsat Imagery Layers are also available: Panchromatic and Pansharpened. Multispectral Bands The table below lists all available multispectral OLI bands. Bathymetric with DRA consumes bands 4,3,1. Band Description Wavelength (µm) Spatial Resolution (m) 1 Coastal aerosol 0.43 - 0.45 30 2 Blue 0.45 - 0.51 30 3 Green 0.53 - 0.59 30 4 Red 0.64 - 0.67 30 5 Near Infrared (NIR) 0.85 - 0.88 30 6 SWIR 1 1.57 - 1.65 30 7 SWIR 2 2.11 - 2.29 30 8 Cirrus (in OLI this is band 9) 1.36 - 1.38 30 9 QA Band (available with Collection 1)* NA 30 *More about the Quality Assessment Band TIRS Bands Band Description Wavelength (µm) Spatial Resolution (m) 10 TIRS1 10.60 - 11.19 100 * (30) 11 TIRS2 11.50 - 12.51 100 * (30) *TIRS bands are acquired at 100 meter resolution, but are resampled to 30 meter in delivered data product. Additional Usage Notes Image exports are limited to 4,000 columns x 4,000 rows per request. This dynamic imagery layer can be used in Web Maps and ArcGIS Pro as well as web and mobile applications using the ArcGIS REST APIs. WCS and WMS compatibility means this imagery layer can be consumed as WCS or WMS services. The Landsat Explorer App is another way to access and explore the imagery. This layer is part of a larger collection of Landsat Imagery Layers. Data Source Landsat imagery is sourced from the U.S. Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA). Data is hosted by the Amazon Web Services as part of their Public Data Sets program. For information, see Landsat 8 and Landsat 9.