Temperature Responses to Spectral Solar Variability on Decadal Time Scales
نویسندگان
چکیده
[1] 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. Citation: Cahalan, R. F., G. Wen, J. W. Harder, and P. Pilewskie (2010), Temperature responses to spectral solar variability on decadal time scales, Geophys. Res. Lett., 37, L07705, doi:10.1029/2009GL041898.
منابع مشابه
Variable solar irradiance as a plausible agent for multidecadal variations in the Arctic-wide surface air temperature record of the past 130 years
[1] This letter offers new evidence motivating a more serious consideration of the potential Arctic temperature responses as a consequence of the decadal, multidecadal and longer-term persistent forcing by the ever-changing solar irradiance both in terms of total solar irradiance (TSI, i.e., integrated over all wavelengths) and the related UV irradiance. The support for such a solar modulator c...
متن کاملCycles and trends in solar irradiance and climate
How—indeed whether—the Sun’s variable energy outputs influence Earth’s climate has engaged scientific curiosity for more than a century. Early evidence accrued from correlations of assorted solar and climate indices, and from recognition that cycles near 11, 88 and 205 years are common in both the Sun and climate.1,2 But until recently, an influence of solar variability on climate, whether thro...
متن کاملCharacterizing the European sub - Arctic winter climate since 1500 using ice , temperature , and atmospheric circulation time
This study describes winter climate during the last 500 y for the greater Baltic Sea region through an examination of well-documented time series of ice cover, sea level pressure, and winter surface air temperatures. These time series have been the focus of previous studies, but here their covariation over different time scales is analyzed based on two modern descriptive statistical techniques,...
متن کاملSurface air temperature variability reconstructed with tree rings for the Gulf of Alaska over the past 1200 years
A 1200-year-long tree-ring width record from living and subfossil mountain hemlock wood is used to reconstruct February through August temperatures for the Gulf of Alaska, providing a record of past climate variability for the Northeast Pacific sector that captures interannual to centennial timescales. The moderate elevation at the tree-ring sites has allowed these trees to retain their tempera...
متن کاملAnti-persistence in the global temperature anomaly field
In this study, low-frequency variations in temperature anomaly are investigated by mapping temperature anomaly records onto random walks. We show evidence that global overturns in trends of temperature anomalies occur on decadal time-scales as part of the natural variability of the climate system. Paleoclimatic summer records in Europe and New-Zealand provide further support for these findings ...
متن کامل