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CERES EBAF Net Balancing



EBAF Net Balance


Comparison of ERBElike, SSF1deg, SYN1deg, and EBAF fluxes


TOA fluxes (W/m2)
Mar00-Feb04
ERBElike
Edition2
SSF1deg
Edition2
SYN1deg
Edition2
EBAF
Edition2
Incoming Solar341.3341.3341.3340.0
OLR239.0237.7237.2239.7
SW98.396.697.799.5
Net4.07.06.00.85

CERES Net flux uncertainty analysis


Net flux sensitivity (αi), standard deviation of error (σi), maximum likelihood error (xi), and error effect on net TOA flux.
Parameter Net TOA Flux
sensitivity, αi (W/m2/%)
2σ uncertainty, δi (%) Maximum Likelihood
solution, xi (%)
TOA Flux
adjustment (W/m2)
SW gain-0.9772.01.61.57
LW gain-2.371.00.9722.3
Unfiltered SW-0.9770.50.1050.1
Unfiltered LW(N)-1.190.20.0220.03
Unfiltered LW(D)-1.190.380.070.08
SW radiance to flux-0.9770.200.0170.02
LW radiance to flux-2.370.130.0160.04
Time-averaging SW-0.9770.300.0380.04
Time-averaging LW-2.370.130.0160.04
Reference Level, SW-0.9770.100.0040.00
Reference Level, LW-2.370.080.0070.02
Incoming Solar3.400.06-0.005-0.02
Total SW   1.7
Total LW   2.5
Total Net   -4.2
  • Note the SW and LW gains or instrument absolute calibration have the highest uncertainty and largest corresponding TOA flux adjustment

CERES Earth's Radiation Budget


Image: EBAF Energy Balance, balanced Image: EBAF Energy Balance, Positive Imbalance Image: EBAF Energy Balance, Negative Imbalance
  • For the Earth to remain in balance the energy coming into and leaving the Earth must equal.
  • The CERES absolute instrument calibration currently does not have zero net balance and must be adjusted to balance the Earth's energy budget.
  • After the EBAF adjustment the CERES fluxes may be used in climate models for climate model evaluation, estimating the Earth's global mean energy budget and to infer meridional heat transport.

CERES Data Product Information

 
  Image: NASA Logo NASA Official: Dr. Norman Loeb
Page Curator: Edward Kizer
Page Last Modified: 10/16/2017 11:04:36 EST
Site Last Modified: 11/07/2017 17:18:43 EST