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Description

The NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Combined Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Moderate Resolution Imaging Spectroradiometer (MODIS) Emissivity for Land (CAMEL) data suite has been expanded to include a monthly global emissivity climatology product (CAM5K30EMCLIM). This 0.05 degree (~5 kilometer) resolution product represents the mean emissivity from 2003 through 2021 (19 years). Additional details regarding the methodology are available in the User Guide and Algorithm Theoretical Basis Document (ATBD).

Variables provided in the CAM5K30EMCLIM product include latitude, longitude, wavelength, number of samples used to calculate climatology, CAMEL quality flag, snow fraction derived from MODIS (MOD10), and CAMEL Emissivity.

Version Description

This is version two of the Combined ASTER and MODIS Emissivity database over Land products.

Product Summary

Platforms
Terra,
Aqua
Instruments
ASTER,
MODIS
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Spatial Resolution
5600 Meters x 5600 Meters
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2003-01-01 to 2022-01-01
Temporal Resolution
1 Month
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC)
Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin, Madison (UWI-MAD/SSEC/CIMSS)
Concept ID
C3274448375-LPCLOUD
Data State
COMPLETE
Processing Level
3
Published
Updated
Science Keywords
Emissivity,
Vegetation Index,
Snow Cover

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Borbas, E., Hook, S., Hulley, G., Loveless, M., Knuteson, R., & Cawse-Nicholson, K. (2024). Combined ASTER and MODIS Emissivity database over Land (CAMEL) Emissivity Climatology Monthly Global 0.05Deg V003 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MEASURES/LSTE/CAM5K30EMCLIM.003 Date Accessed: 2025-11-03

File Naming Convention

CAM5K30EMCLIM_emis_climatology_04Month_V003.nc

The file name begins with the Product Short Name (CAM5K30CFCLIM) followed by the Climatology Package Component (emis_climatology), the Month designated as mmMonth (04Month), the Data Collection Version (V003), and the Data Format (nc).

Documents

Publications Citing This Dataset

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
camel_emis Combined ASTER MODIS Emissivity over Land Climatology N/A uint16 9999 9999 to 1000 0.001
camel_qflag CAMEL quality flag N/A uint8 N/A N/A to 4 N/A
latitude Latitude, degrees North at grid-box center Degree float32 N/A N/A to 90 N/A
longitude Longitude, degrees East at grid-box center Degree float32 N/A N/A to 180 N/A
number_samples Number of samples used to calculate climatology N/A uint8 N/A N/A to 19 N/A
snow_fraction_average MODIS MOD10 Snow Fraction Average N/A uint8 N/A N/A to 100 0.01
wavelength Wavelength of CAMEL channels in micrometers Microns float32 N/A N/A N/A
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