李张瑞,余锦华,李青青,纪源

• 1:南京信息工程大学大气科学学院
• 2:南京信息工程大学大气物理学院

摘要(Abstract)：

基于1979—2019年ERA5月平均资料，采用信息流和线性回归分析大气经向热量输送(Atmospheric heat transpont, AHT)线性趋势，并讨论全球增暖和Hadley环流对AHT的影响程度。结果表明：AHT在南北半球各纬度带及不同季节表现出不同的变化特征：6—8月，15°N—65°N和35°S—60°S分别呈现向北输送减弱和向南输送增强的趋势，12—2月，5°N—15°S和15°N—40°S分别呈现向北输送增强和向南输送减弱的趋势，表明从夏半球向冬半球的AHT净通量有增加的趋势。信息流显示，经向不均匀增暖是北半球夏季向极AHT减弱的原因。南半球冬季，Hadley环流边界南移导致潜热在副热带的辐散中心南移，感热在副热带的辐散中心南移与环流边界南移相互反馈。北半球春(秋)季，感热向赤道辐合增强(减弱)与Hadley环流增强(减弱)相互反馈。南半球春季，Hadley环流增强导致位能向副热带辐合增强，南半球秋季，Hadley环流增强导致潜热向赤道辐合增强。

关键词(KeyWords)： 经向热量输送;全球增暖;Hadley环流;信息流;热带扩张

Abstract:

Keywords:

基金项目(Foundation): 国家重点研究发展计划项目(2018YFC1507704);; 南京信息工程大学大学生创新创业训练计划项目(202010300051Y)资助~~

作者(Author): 李张瑞,余锦华,李青青,纪源

DOI: 10.16441/j.cnki.hdxb.20210092

参考文献(References)：

• [1] Yang H,Li Q,Wang K,et al.Decomposing the meridional heat transport in the climate system[J].Climate Dynamics,2015,44(9-10):2751-2768.
• [2] Core Writing Team,Pachauri R K,Meyer L A.Climate Change 2014:Synthesis Seport[R].Switzerland:IPCC,2014.
• [3] He C,Liu Z,Hu A.The transient response of atmospheric and oceanic heat transports to anthropogenic warming[J].Nature Climate Change,2019,9(3):222-226.
• [4] Masuda K.Meridional heat transport by the atmosphere and the ocean:analysis of FGGE data[J].Tellus,1988,40A(4):285-302.
• [5] Marshall J,Donohoe A,Ferreira D,et al.The ocean’s role in setting the mean position of the Inter-Tropical Convergence Zone[J].Climate Dynamics,2014,42(7-8):1967-1979.
• [6] Huang R.Contribution of oceanic circulation to the poleward heat flux[J].Journal of Ocean University of China,2005,4(4):277-287.
• [7] Michaud R,Derome J.On the mean meridional transport of energy in the Atmosphere and oceans as derived from six years of ECMWF analyses[J].Tellus A,1991,43(1):1-14.
• [8] Oort A H,Peixóto J P.Global Angular Momentum and Energy Balance Requirements from Observations[M].San Diego:Advances in Geophysics,1983:355-490.
• [9] Alexeev V A,Jackson C H.Polar amplification:Is atmospheric heat transport important?[J].Climate Dynamics,2013,41(2):533-547.
• [10] Budzianowski W M.Time delay of global warming[J].Global Warming,2011,3(3):289-306.
• [11] 姚杰，温琴，沈星辰，等.青藏高原对全球大气温度和水汽分布的影响[J].北京大学学报(自然科学版),2018,54(6):1179-1185.Yao J,Wen Q,Shen X C,et al.Impact of Tibetan plateau on global atmospheric temperature and water vapor distribution[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2018,54(6):1179-1185.
• [12] Yang H,Dai H.Effect of wind forcing on the meridional heat transport in a coupled climate model:Equilibrium response[J].Climate Dynamics,2015,45(5-6):1451-1470.
• [13] Trenberth K E,Stepaniak D P.Covariability of components of poleward atmospheric energy transports on seasonal and interannual timescales[J].Journal of Climate,2003,16(22):3691-3705.
• [14] Heaviside C,Czaja A.Deconstructing the Hadley cell heat transport[J].Quarterly Journal of the Royal Meteorological Society,2013,139(677):2181-2189.
• [15] Trenberth K E.Interannual variations in the atmospheric heat budget[J].Journal of Geophysical Research:Atmospheres,2002,107(7-8):1-15.
• [16] Nicholas D,Birner T.On the discrepancies in tropical belt expansion between reanalyses and climate models and among tropical belt width metrics[J].Journal of Climate,2017,30(4):1211-1231.
• [17] Davis S M,Rosenlof K H.A multidiagnostic intercomparison of tropical-width time series using reanalyses and satellite observations[J].Journal of Climate,2012,25(4):1061-1078.
• [18] Seidel D J,Fu Q,Randel W J,et al.Widening of the tropical belt in a changing climate[J].Nature Geoscience,2008,1:21-24.
• [19] 李萍，缪启龙.夏季东亚副热带经圈环流特征及其对长江流域降水的影响[J].气象与减灾研究，2011,34(1):24-31.Li P,Miao Q L.Characteristics of summer meridional circulation in East Asia subtropical zone and its effect on precipitation in the Yangtze River Basin[J].Meteorology and Disaster Reduction Research,2011,34(1):24-31.
• [20] Palmen E,Vurorela L A.On the mean meridional circulations in the Northern Hemisphere during the winter season[J].Quarterly Journal of the Royal Meteorological Society,1963,89(379):131-138.
• [21] Vuorela L A,Tuominen L.On the mean zonal and meridional circulations and the flux of moisture in the Northern Hemisphere during the summer season[J].Pure and Applied Geophysics,1964,57(1):167-180.
• [22] Hu Y,Fu Q.Observed poleward expansion of the Hadley cell since 1979[J].Atmospheric Chemistry and Physics,2007,7(4):5229-5236.
• [23] Liang X.Unraveling the cause-effect relation between time series[J].Physical Review E Statistical Nonlinear & Soft Matter Physics,2014,90(5-1):052150.
• [24] Liang X.Normalizing the causality between time series[J].Physical Review E Statistical Nonlinear & Soft Matter Physics,2015,92(2):022126.
• [25] 施能，陈家其，屠其璞.中国近100年来4个年代际的气候变化特征[J].气象学报，1995,53(4):431-439.Shi N,Chen J Q,Tu Q P.4-Phase climate change features in the last 100 years over China[J].Acta Meteorologica Sinica,1995,53(4):431-439.
• [26] Mamalakis A,Randerson J T,Yu J,et al.Zonally contrasting shifts of the tropical rain belt in response to climate change[J].Nature Climate Change,2021,11(2):1-9.

文章评论(Comment)：