Asymmetry in the Seasonal Cycle of Zonal‐Mean Surface Air Temperature
Asymmetry in the Seasonal Cycle of Zonal‐Mean Surface Air Temperature
复制标题
纬向平均表面气温季节循环的不对称性
DOI:
10.1029/2023gl103403
复制
发表时间:
2023
影响因子:
5.2
通讯作者:
Donohoe, Aaron
中科院分区:
文献类型:
--
作者:
Roach, Lettie A.;Eisenman, Ian;Wagner, Till J. W.;Donohoe, Aaron
At most latitudes, the seasonal cycle of zonal‐mean surface air temperature is notably asymmetric: the length of the warming season is not equal to the length of the cooling season. The asymmetry varies spatially, with the cooling season being ∼40 days shorter than the warming season in the subtropics and the warming season being ∼100 days shorter than the cooling season at the poles. Furthermore, the asymmetry differs between the Northern Hemisphere and the Southern Hemisphere. Here, we show that these observed features are broadly captured in a simple model for the evolution of temperature forced by realistic insolation. The model suggests that Earth's orbital eccentricity largely determines the hemispheric contrast, and obliquity broadly dictates the meridional structure. Clouds, atmospheric heat flux convergence, and time‐invariant effective surface heat capacity have minimal impacts on seasonal asymmetry. This simple, first‐order picture has been absent from previous discussions of the surface temperature seasonal cycle.
登录
查看更多内容
DOI:
10.1073/pnas.1809868115
发表时间:
2018-10-09
影响因子:
11.1
作者:
Koll, Daniel D. B.;Cronin, Timothy W.
通讯作者:
Cronin, Timothy W.
影响因子:
4.9
作者:
Donohoe, Aaron;Dawson, Eliza;Rhines, Andy
通讯作者:
Rhines, Andy
影响因子:
--
作者:
B. Rose
通讯作者:
B. Rose
影响因子:
4.9
作者:
Donohoe, Aaron;Battisti, David S.
通讯作者:
Battisti, David S.