NIMBUS-7 Level 3
Entry Title: Nimbus-7 Narrow Field of View (NFOV) Maximum Likelihood Cloud Estimation (MLCE) Data in Native Format

Entry ID: NIMBUS7_NFOV_MLCE_1
Clouds Radiation Budget
Description

NIMBUS7_NFOV_MLCE data are Nimbus 7 Narrow Field of View (NFOV) Maximum Likelihood Cloud Estimation (MLCE) Data in Native Format.The NIMBUS7_NFOV_MLCE data set uses the Nimbus-7 measurements and the MLCE algorithm for better regional and temporal resolution. The Earth Radiation Budget (ERB) parameters, derived from the Nimbus-7 scanner measurements, were rederived in 1990 using a Maximum Likelihood Cloud Estimation (MLCE) algorithm similar, but not identical, to the Earth Radiation Budget Experiment (ERBE) algorithm. Daily and monthly means are presented on two commensurate equal area world grids: (167 km by 167 km) and (500 km by 500 km). The MLCE procedure also yielded a rough estimate of the regional cloud cover.The scanner took measurements from November 16, 1978 through June 20, 1980; however, only 13 months (May 1979 through May 1980) of data sampling were reprocessed using the Sorting into Angular Bins and MLCE algorithms. There was poorer temporal sampling during the first five months of the experiment.The Nimbus 7 research-and-development satellite served as a stabilized, earth-oriented platform for the testing of advanced systems for sensing and collecting data in the pollution, oceanographic and meteorological disciplines. The polar-orbiting spacecraft consisted of three major structures: (1) a hollow torus-shaped sensor mount, (2) solar paddles, and (3) a control housing unit that was connected to the sensor mount by a tripod truss structure.

Keywords

From GCMD Science Keywords:
  • NET RADIATION
  • LONGWAVE RADIATION
  • CLOUD FREQUENCY > CLOUD PROPERTIES
  • ALBEDO
  • Clear-Sky Albedo
  • Clear-Sky Longwave (LW) Flux
  • Clear-Sky Net Radiation
  • Clear-Sky Shortwave (SW) Flux
  • Cloud Amount
  • Longwave (LW) Flux
  • Net Radiation
  • Shortwave (SW) Flux
Data Distribution

File Format(s):

Binary

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Spatial Information

spatial-coverage-map
Spatial Coverage: (S: -90, N: 90), (W: -180, E: 180)
Spatial Coverage Type: Not provided
Coordinate System: Cartesian
Granule Spatial Representation: Geodetic
Locations

GLOBAL
Temporal Information

Temporal Coverage: 1979-05-01 - 1980-05-31
Temporal Resolution: Daily Average
Platforms

Earth Observation Satellites
Nimbus-7
ERB
Earth Radiation Budget
Metadata Dates

Created on 1999-09-28
Last updated on 2022-10-25