Seasonal and interannual variations of top-of-atmosphere irradiance and cloud cover over polar regions derived from the CERES data set

Seiji Kato, Norman G. Loeb, Patrick Minnis, Jennifer A. Francis, Thomas P. Charlock, David A. Rutan, Eugene Edmund Clothiaux, Szedung Sun-Mack

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The daytime cloud fraction derived by the Clouds and the Earth's Radiant Energy System (CERES) cloud algorithm using Moderate Resolution Imaging Spectroradiometer (MODIS) radiances over the Arctic from March 2000 through February 2004 increases at a rate of 0.047 per decade. The trend is significant at an 80% confidence level. The corresponding top-of-atmosphere (TOA) shortwave irradiances derived from CERES radiance measurements show less significant trend during this period. These results suggest that the influence of reduced Arctic sea ice cover on TOA reflected shortwave radiation is reduced by the presence of clouds and possibly compensated by the increase in cloud cover. The cloud fraction and TOA reflected shortwave irradiance over the Antarctic show no significant trend during the same period.

Original languageEnglish (US)
Article numberL19804
JournalGeophysical Research Letters
Volume33
Issue number19
DOIs
StatePublished - Oct 1 2006

Fingerprint

CERES (experiment)
top of atmosphere
cloud cover
annual variations
polar region
irradiance
polar regions
annual variation
seasonal variation
atmospheres
radiance
trends
energy
sea ice
MODIS (radiometry)
reflected waves
daytime
confidence
shortwave radiation
ice cover

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Kato, Seiji ; Loeb, Norman G. ; Minnis, Patrick ; Francis, Jennifer A. ; Charlock, Thomas P. ; Rutan, David A. ; Clothiaux, Eugene Edmund ; Sun-Mack, Szedung. / Seasonal and interannual variations of top-of-atmosphere irradiance and cloud cover over polar regions derived from the CERES data set. In: Geophysical Research Letters. 2006 ; Vol. 33, No. 19.
@article{bdf616e270884e219ad95c71afb1616d,
title = "Seasonal and interannual variations of top-of-atmosphere irradiance and cloud cover over polar regions derived from the CERES data set",
abstract = "The daytime cloud fraction derived by the Clouds and the Earth's Radiant Energy System (CERES) cloud algorithm using Moderate Resolution Imaging Spectroradiometer (MODIS) radiances over the Arctic from March 2000 through February 2004 increases at a rate of 0.047 per decade. The trend is significant at an 80{\%} confidence level. The corresponding top-of-atmosphere (TOA) shortwave irradiances derived from CERES radiance measurements show less significant trend during this period. These results suggest that the influence of reduced Arctic sea ice cover on TOA reflected shortwave radiation is reduced by the presence of clouds and possibly compensated by the increase in cloud cover. The cloud fraction and TOA reflected shortwave irradiance over the Antarctic show no significant trend during the same period.",
author = "Seiji Kato and Loeb, {Norman G.} and Patrick Minnis and Francis, {Jennifer A.} and Charlock, {Thomas P.} and Rutan, {David A.} and Clothiaux, {Eugene Edmund} and Szedung Sun-Mack",
year = "2006",
month = "10",
day = "1",
doi = "10.1029/2006GL026685",
language = "English (US)",
volume = "33",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "19",

}

Seasonal and interannual variations of top-of-atmosphere irradiance and cloud cover over polar regions derived from the CERES data set. / Kato, Seiji; Loeb, Norman G.; Minnis, Patrick; Francis, Jennifer A.; Charlock, Thomas P.; Rutan, David A.; Clothiaux, Eugene Edmund; Sun-Mack, Szedung.

In: Geophysical Research Letters, Vol. 33, No. 19, L19804, 01.10.2006.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Seasonal and interannual variations of top-of-atmosphere irradiance and cloud cover over polar regions derived from the CERES data set

AU - Kato, Seiji

AU - Loeb, Norman G.

AU - Minnis, Patrick

AU - Francis, Jennifer A.

AU - Charlock, Thomas P.

AU - Rutan, David A.

AU - Clothiaux, Eugene Edmund

AU - Sun-Mack, Szedung

PY - 2006/10/1

Y1 - 2006/10/1

N2 - The daytime cloud fraction derived by the Clouds and the Earth's Radiant Energy System (CERES) cloud algorithm using Moderate Resolution Imaging Spectroradiometer (MODIS) radiances over the Arctic from March 2000 through February 2004 increases at a rate of 0.047 per decade. The trend is significant at an 80% confidence level. The corresponding top-of-atmosphere (TOA) shortwave irradiances derived from CERES radiance measurements show less significant trend during this period. These results suggest that the influence of reduced Arctic sea ice cover on TOA reflected shortwave radiation is reduced by the presence of clouds and possibly compensated by the increase in cloud cover. The cloud fraction and TOA reflected shortwave irradiance over the Antarctic show no significant trend during the same period.

AB - The daytime cloud fraction derived by the Clouds and the Earth's Radiant Energy System (CERES) cloud algorithm using Moderate Resolution Imaging Spectroradiometer (MODIS) radiances over the Arctic from March 2000 through February 2004 increases at a rate of 0.047 per decade. The trend is significant at an 80% confidence level. The corresponding top-of-atmosphere (TOA) shortwave irradiances derived from CERES radiance measurements show less significant trend during this period. These results suggest that the influence of reduced Arctic sea ice cover on TOA reflected shortwave radiation is reduced by the presence of clouds and possibly compensated by the increase in cloud cover. The cloud fraction and TOA reflected shortwave irradiance over the Antarctic show no significant trend during the same period.

UR - http://www.scopus.com/inward/record.url?scp=34047202437&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34047202437&partnerID=8YFLogxK

U2 - 10.1029/2006GL026685

DO - 10.1029/2006GL026685

M3 - Article

AN - SCOPUS:34047202437

VL - 33

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 19

M1 - L19804

ER -