Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3707705c&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 7, CiteID L07705
Astronomy and Astrophysics
Astrophysics
10
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Solar Physics, Astrophysics, And Astronomy: Solar And Stellar Variability (1650), Global Change: Regional Climate Change, Solar Physics, Astrophysics, And Astronomy: Solar Irradiance
Scientific paper
Two scenarios of spectral solar forcing, namely Spectral Irradiance Monitor (SIM)-based out-of-phase variations and conventional in-phase variations, are input to a time-dependent radiative-convective model (RCM), and to the GISS modelE. Both scenarios and models give maximum temperature responses in the upper stratosphere, decreasing to the surface. Upper stratospheric peak-to-peak responses to out-of-phase forcing are ˜0.6 K and ˜0.9 K in RCM and modelE, ˜5 times larger than responses to in-phase forcing. Stratospheric responses are in-phase with TSI and UV variations, and resemble HALOE observed 11-year temperature variations. For in-phase forcing, ocean mixed layer response lags surface air response by ˜2 years, and is ˜0.06 K compared to ˜0.14 K for atmosphere. For out-of-phase forcing, lags are similar, but surface responses are significantly smaller. For both scenarios, modelE surface responses are less than 0.1 K in the tropics, and display similar patterns over oceanic regions, but complex responses over land.
Cahalan Robert F.
Harder Jerald W.
Pilewskie Peter
Wen Guoyong
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