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Terra@10: CERES Results

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Title: Understanding and Protecting Our Home Planet Author: SAIC ODIN Last modified by: Owen, Tassia (GSFC-613.0)[SIGMA SPACE CORPORATION] Created Date – PowerPoint PPT presentation

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Title: Terra@10: CERES Results


1
Terra_at_10 CERES Results

Norman Loeb and the CERES Science Team NASA
Langley Research Center, Hampton,
VA Terra_at_10 Reception NASA GSFC, Greenbelt,
MD May 11, 2010
2
Global Energy Budget

Trenberth, K.E., J.T. Fasullo, and J. Kiehl,
2009 Earth's Global Energy Budget. Bull. Amer.
Meteor. Soc., 90, 311323
3
CERES Objectives
  • Provide continuous long-term Earth Radiation
    Budget observations at the top-of-atmosphere,
    within-atmosphere and surface together with
    coincident cloud, aerosol and meteorological
    data.
  • These data enable improved understanding of the
    natural variability of the climate system and how
    it is responding to climate forcing.

4
CERES Description
  • - Integrated instrument-algorithm-validation
    science team that provides development of
    higher-level products (Levels 1-3) and
    investigations.
  • High level of data fusion 11 instruments on 7
    spacecraft all integrated to obtain climate
    accuracy in top to bottom radiative fluxes.
  • Approx. 1.7 million lines of QC and validation
    code, and 0.75 million lines of production code.
  • Total of 25 unique input data sources are used to
    produce 18 CERES data products. Over 90 of the
    CERES data product volume involves two or more
    instruments, and individual data products include
    up to 260 unique parameters.
  • PRIME USERS Climate modeling community

5
32-years of Radiation Measurements
  • CERES-Terra broadband measurements continue to
    break new ground every day by extending the long-
    term broadband radiation record that began with
    the Nimbus7 ERB mission in 1978.

T. Wong, NASA LaRC
6
CERES Terra Radiative Fluxes
Top-of-atmosphere
  • CERES Terra provides global coverage daily of the
    distribution of the Earths energy flow at
    top-of-the-atmosphere, within-atmosphere and
    surface.

7
CERES MODIS Synergy
MODIS Cloud Amount
CERES Net Cloud Radiative Effect

()
(Wm-2)
  • CERES broadband radiation sensors on Terra
    measure and quantify the effect of clouds on the
    global energy balance.
  • Net cloud radiative effect plays an important
    role in understanding the earths climate and
    climate changes.

8
Cloud-Radiation Variability from CERES MODIS
9
Terra (1030 LT) - Aqua (130 LT) Monthly CERES
SW Flux Differences (Dec 2002)
CERES/GEO Fluxes
CERES-Only Fluxes
Terra fluxes gt Aqua fluxes over marine stratus
regions (morning clouds) Aqua fluxes gt Terra
fluxes over land afternoon convection regions
The merged GEO fluxes have removed the CERES
sampling bias of the diurnal cycle.
10
Annual Cycle of Albedo for Marine Stratus and
Land Convection from 8 Years of CERES Terra
Marine Stratus Albedo
J F M A M J J A S O N D
Convective Cloud Albedo
J F M A M J J A S O N D
  • Diurnal variations in marine stratus and
    convective clouds have a strong influence on the
    amplitude of the annual cycle of albedo for these
    cloud types.
  • Merging CERES Terra with geostationary satellite
    observations captures changes in both diurnal and
    annual cycles of albedo.

11
CERES/Terra TOA Radiation Record
  • Interannual variability in the global radiation
    budget is closely tied to cloud fluctuations
    associated with El Nino/La Nina events in the
    tropics.

12
CERES Terra Global LW TOA Flux and Global
Temperature Anomalies

CERES LW TOA Flux Anomaly (Wm-2)
HadCRUT3 Temperature Anomaly (K)
  • Interannual variability in the outgoing LW
    radiation closely tracks variations in global
    temperature associated with El Nino/La Nina
    events in the tropics.

13
Summary
  • The Terra mission continues to provide
    unprecedented global observations of the Earths
    Radiation Budget and the associated atmospheric
    and surface properties.
  • The synergy amongst the Terra instruments provide
    new insights on how the individual components of
    the Earth-Atmosphere system interact and
    influence climate over a range of spatial scales.
  • As NASAs Earth Observing System (EOS) flagship
    observatory, Terra has set the bar extremely high
    for future missions, both technologically and
    scientifically.
  • Like wine, CERES and Terra get better with age.
    We learn more with each passing year.
  • May we continue to fly healthy until the fuel is
    all spent!

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