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Seasonal Clear-Sky Flux and Cloud Radiative Effect Anomalies in the Arctic Atmospheric Column Associated with the Arctic Oscillation and Arctic DipoleThe impact of the Arctic Oscillation (AO) and Arctic Dipole (AD) on the radiative flux into the Arctic mean atmospheric column is quantified. 3-month-averaged AO and AD indices are regressed with corresponding surface and top-of-atmosphere (TOA) fluxes from the CERES-SFC and CERES-TOA EBAF datasets over the period 2000-2014. An increase in clear-sky fluxes into the Arctic mean atmospheric column during fall is the largest net flux anomaly associated with AO, primarily driven by a positive net longwave flux anomaly (i.e. increase of net flux into the atmospheric column) at the surface. A decrease in the Arctic mean atmospheric column cloud radiative effect during winter and spring is the largest flux anomaly associated with AD, primarily driven by a change in the longwave cloud radiative effect at the surface. These prominent responses to AO and AD are widely distributed across the ice-covered Arctic, suggesting that the physical process or processes that bring about the flux change associated with AO and AD are distributed throughout the Arctic.
Document ID
20170003225
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Hegyi, Bradley M.
(NASA Langley Research Center Hampton, VA, United States)
Taylor, Patrick C.
(Universities Space Research Association Hampton, VA, United States)
Date Acquired
April 7, 2017
Publication Date
April 16, 2017
Subject Category
Meteorology And Climatology
Report/Patent Number
NF1676L-25248
Meeting Information
Meeting: International Radiation Symposium: Poster Session 2
Location: Auckland
Country: New Zealand
Start Date: April 16, 2016
End Date: April 22, 2016
Sponsors: Auckland Univ.
Funding Number(s)
WBS: WBS 509496.02.08.06.93
Distribution Limits
Public
Copyright
Public Use Permitted.
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