Future change in Southern Hemisphere summertime and wintertime atmospheric blockings simulated using a 20‐km‐mesh AGCM
作者： Mio Matsueda , Hirokazu Endo , Ryo Mizuta
DOI: 10.1029/2009GL041758
关键词: Atmosphere 、 Climate model 、 Atmospheric sciences 、 General Circulation Model 、 Atmospheric model 、 Climatology 、 Blocking (radio) 、 Environmental science 、 Seasonality 、 Southern Hemisphere 、 Climate change
摘要: [1] Future changes in the frequency of Australia–New Zealand (AU; winter and summer) Andes (AN; winter) blockings are investigated via present-day (1979–2003) future (2075–2099) simulations using 20-, 60-, 180-km-mesh atmospheric general circulation models (AGCMs) under IPCC SRES A1B emission scenario. The climate reveal that AGCM with highest horizontal resolution is required to accurately simulate AU AN both summer. simulation predicts a significant decrease blocking summer winter, mainly on west side peak frequency, where westerly jet predicted increase strength. during more remarkable than number long-lived events possibility ≥13 days will disappear altogether. In contrast, no duration.
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