Skip to main content

Description

The ILW suite provides inland-water extractions for lakes and reservoirs across the contiguous U.S. (CONUS) and Alaska. ILW delivers Rayleigh-corrected surface reflectance (ρs, unitless) and the Cyanobacteria Index (CI_cyano, unitless). The data target for MERIS and OLCI are 15,450 CONUS waterbodies (≥1 full-resolution 300 m OLCI pixel), >2,300 larger resolvable lakes (≥3 pixels), and 5,874 resolvable lakes in Alaska—created in collaboration with the CyAN program to reduce user processing and provide a standardized resource for inland-water algorithm development, validation, and trend analysis. PACE OCI ILW targets 117 CONUS lakes (≥3 pixels) and lakes across Alaska.

Version Description

Inland Waters Dataset, Version 5.0

Product Summary

Platforms
Sentinel-3B
Instruments
OLCI
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Geographic Region
UNITED STATES OF AMERICA
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2018-04-25 to Present
Data Partner
Ocean Biology Processing Group (OBPG) ,
Ocean Biology Distributed Active Archive Center (OB.DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/GCDC/OB.DAAC)
Concept ID
C3433948487-OB_CLOUD
Data State
ACTIVE
Number of Files/Granules
7308
Processing Level
3
Published
Updated
Science Keywords
Lakes/Reservoirs ,
Lake/Pond ,
Coastal ,
CYANOBACTERIA (BLUE-GREEN ALGAE) ,
Marine Environment Monitoring ,
Coastal Processes ,
Aquatic Sciences ,
Chlorophyll Concentrations ,
Phytoplankton ,
Groundwater Management

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
CI_cyano CI_cyano sr^-1 float32 -32767 4.9999998736894E-5 to 0.050000000745058 N/A
lat lat degrees_north float32 -999 -90 to 90 N/A
lon lon degrees_east float32 -999 -180 to 180 N/A
palette palette N/A uint8 N/A N/A N/A
rhos_400 rhos_400 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_412 rhos_412 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_443 rhos_443 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_490 rhos_490 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_510 rhos_510 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_560 rhos_560 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_620 rhos_620 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_665 rhos_665 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_674 rhos_674 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_681 rhos_681 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_709 rhos_709 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_754 rhos_754 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_865 rhos_865 N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_884 rhos_884 N/A float32 -32767 -0.050000000745058 to 1 N/A
You're viewing 18 of 18