GCMD new keyword request
Posted: Wed Nov 13, 2024 2:35 pm America/New_York
Hi! I have a rather extensive request for new GCMD keywords. These requests are being made on behalf of the data producers for https://nsidc.org/data/modscgdrf_nrt/versions/1. The forthcoming Version 2 of this data set includes an upgrade to netCDF format. The requested keywords will be parameters embedded within the netCDF files, and will also be used in the accompanying NSIDC metadata. The data producers have done a thorough review of existing GCMD keywords to ensure that requesting new keywords is necessary. Please let me know if you have any questions or concerns about this request.
Thank you,
Jesslyn
SNOW FRACTION
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW FRACTION
Definition: The areal extent of snow-covered ground, expressed as the mathematical fraction of a region covered with snow.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
LAND ICE FRACTION
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > LAND ICE FRACTION
Definition: The areal extent of ice, typically glacier ice, expressed as the mathematical fraction of a region covered with ice.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
SNOW GRAIN SIZE
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW GRAIN SIZE
Definition: The size of individual snow grains in micrometers.
Source 1: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
Definition 2: Painter, T.H., Bryant, A.C., & Skiles, S.M. (2012). Radiative forcing by light absorbing impurities in snow from MODIS surface reflectance data. Geophysical Research Letters, 39, L17502, doi: 10.1029/2012gl052457.
VEGETATION FRACTION
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION FRACTION
Definition: The areal extent of vegetation-covered ground, expressed as the mathematical fraction of a region covered with vegetation.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
ROCK FRACTION
EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > ROCK FRACTION
Definition: The areal extent of rock or soil-covered ground, expressed as the mathematical fraction of a region covered with rock or soil.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
SHADE FRACTION
EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > SHADE FRACTION
Definition: Spectral fraction of photometric shade.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
SNOW RADIATIVE FORCING
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW RADIATIVE FORCING
Definition: Snow radiative forcing is a measure of the additional absorption of solar radiation from light-absorbing particles (LAP) such as dust or soot. Units of measure are watts per square meter (W/m2). Radiative forcing is calculated by the difference between the net (downward minus upward) radiative fluxes (irradiance) with and without LAP across a portion of the visible spectrum, for example from 0.350 to 0.876 um. This value depends on the amount of dust or soot, particle size distribution, and the amount of incoming solar radiation.
Source: Painter, T.H., Bryant, A.C., & Skiles, S.M. (2012). Radiative forcing by light absorbing impurities in snow from MODIS surface reflectance data. Geophysical Research Letters, 39, L17502, doi: 10.1029/2012gl052457.
VISIBLE SNOW DARKENING
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > VISIBLE SNOW DARKENING
Definition: Snow darkening is a measure of the potential additional absorption of solar radiation from light-absorbing particles (LAP) such as dust or soot. Units of measure are a fraction or a percent of the visible broadband spectrum, for example from 0.350 to 0.876 um. This value depends on the amount of dust or soot and particle size distribution.
Source: Painter, T.H., Bryant, A.C., & Skiles, S.M. (2012). Radiative forcing by light absorbing impurities in snow from MODIS surface reflectance data. Geophysical Research Letters, 39, L17502, doi: 10.1029/2012gl052457.
Thank you,
Jesslyn
SNOW FRACTION
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW FRACTION
Definition: The areal extent of snow-covered ground, expressed as the mathematical fraction of a region covered with snow.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
LAND ICE FRACTION
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > LAND ICE FRACTION
Definition: The areal extent of ice, typically glacier ice, expressed as the mathematical fraction of a region covered with ice.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
SNOW GRAIN SIZE
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW GRAIN SIZE
Definition: The size of individual snow grains in micrometers.
Source 1: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
Definition 2: Painter, T.H., Bryant, A.C., & Skiles, S.M. (2012). Radiative forcing by light absorbing impurities in snow from MODIS surface reflectance data. Geophysical Research Letters, 39, L17502, doi: 10.1029/2012gl052457.
VEGETATION FRACTION
EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION FRACTION
Definition: The areal extent of vegetation-covered ground, expressed as the mathematical fraction of a region covered with vegetation.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
ROCK FRACTION
EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > ROCK FRACTION
Definition: The areal extent of rock or soil-covered ground, expressed as the mathematical fraction of a region covered with rock or soil.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
SHADE FRACTION
EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > SHADE FRACTION
Definition: Spectral fraction of photometric shade.
Source: Painter, T.H., Rittger, K., McKenzie, C., Slaughter, P., Davis, R.E., & Dozier, J. (2009). Retrieval of subpixel snow-covered area, grain size, and albedo from MODIS. Remote Sensing of Environment, 113, 868-879, doi: 10.1016/j.rse.2009.01.001.
SNOW RADIATIVE FORCING
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW RADIATIVE FORCING
Definition: Snow radiative forcing is a measure of the additional absorption of solar radiation from light-absorbing particles (LAP) such as dust or soot. Units of measure are watts per square meter (W/m2). Radiative forcing is calculated by the difference between the net (downward minus upward) radiative fluxes (irradiance) with and without LAP across a portion of the visible spectrum, for example from 0.350 to 0.876 um. This value depends on the amount of dust or soot, particle size distribution, and the amount of incoming solar radiation.
Source: Painter, T.H., Bryant, A.C., & Skiles, S.M. (2012). Radiative forcing by light absorbing impurities in snow from MODIS surface reflectance data. Geophysical Research Letters, 39, L17502, doi: 10.1029/2012gl052457.
VISIBLE SNOW DARKENING
EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > VISIBLE SNOW DARKENING
Definition: Snow darkening is a measure of the potential additional absorption of solar radiation from light-absorbing particles (LAP) such as dust or soot. Units of measure are a fraction or a percent of the visible broadband spectrum, for example from 0.350 to 0.876 um. This value depends on the amount of dust or soot and particle size distribution.
Source: Painter, T.H., Bryant, A.C., & Skiles, S.M. (2012). Radiative forcing by light absorbing impurities in snow from MODIS surface reflectance data. Geophysical Research Letters, 39, L17502, doi: 10.1029/2012gl052457.