NCAR CAM3模式大气环流对日本东部附近海域海温异常的响应

魏东; 王亚非; 董敏

NCAR CAM3模式大气环流对日本东部附近海域海温异常的响应

1.
灾害天气国家重点实验室, 北京, 100081
2.
北京市气象台, 北京, 100089
3.
国家气候中心, 北京, 100081

基金项目: 科技部973项目(2004CB418300);国家自然基金委项目(40675034);JICA中日政府间合作项目共同资助

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出版历程
- 收稿日期: 2006-05-25
- 修回日期: 2007-03-23

RESPONSE OF ATMOSPHERIC CIRCULATION OF NCAR CAM3 MODEL TO THE SEA SURFACE TEMPERATURE ANOMALY OFF THE EAST COAST OF JAPAN

1.
State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences, Beijing 100081, China
2.
Beijing Meteorological Observatory, Beijing 100089, China
3.
National Climate Center, Beijing 100081, China

摘要

摘要: 使用NCAR CAM3.0大气环流模式,设计多组数值试验,研究了模式大气环流对初夏日本东部附近海域海温异常的响应。首先,在北太平洋中纬度选择异常海温区域,构造了假想的负海温异常,在5、6月份模式气候海温场上叠加该海温异常设计了敏感性试验。其次,在该试验的基础上,沿顺时针方向移动海温异常区域一个格点位置,其他条件不变,设计海温敏感区域变动后的系列试验;另外,通过改变加入模式中的海温异常强度,设计海温异常强度变化后的系列试验。最后,在把加入的海温异常变为正异常后,设计另一组试验。试验结果表明,模式能够较好地表现出初夏日本东部附近海域负海温异常引起的大气环流异常,欧亚中高纬纬向呈"+、-"相间的波列结构。改变加入的负海温异常位置后,试验结果与对应的NCEP合成分析结果有较好的一致性,但是试验得到的大气环流异常分布并未随着加入的海温异常位置的有规律变化而发生同样的位置变动。模式中加入正的海温异常后,模式的试验结果不好。无论正负,模式中加入的海温异常增强后,试验得到的大气环流异常强度并未随着海温异常强度的增强而线性增强。
- CAM /
- 海温异常 /
- 数值试验
Abstract: Using NCAR CAM3 model,a control and several groups of sensitive experiments were designed to simulate the response of the atmospheric circulation in early summer to mid-high latitude SSTA over north Pacific.Firstly,a SSTA district was selected over north Pacific and imaginary SSTA constructed,which was added to the model climate SST in May and Jun to design the sensitive experiment E00.Secondly,based on E00,we designed a Wz series sensitive experiments by rotating the SSTA district by one grid-point(about 2.8°) in the clockwise direction.Then,a Qd series experiments were designed by changing the SSTA input in the model.Finally,the SSTA in the model was changed from negative to positive and another series experiments were designed.The simulation results show that NCAR CAM3 can simulate well the anomaly of the atmospheric circulation which is a "+、-、+" pattern of geopotential height anomaly crossing Eurasia in the mid-high latitudes aroused by the negative SSTA of mid-latitude of north Pacific.After changing the position of the SSTA district,the anomaly of the atmospheric circulation does not regularly move following the shift of the SSTA district,although it agrees with the NCEP/NCAR results of composite analysis.When positive SSTA were put in the model,the simulated results are not satisfactory.Whether SSTA is positive or negative,when the SSTA put in the model increases,the anomaly size of the atmospheric circulation simulated does not change linearly with the augmentation of SSTA.
- CAM /
- anomaly of the sea surface temperature /
- numerical simulation

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参考文献(19)

[1]	NAMIAS J.Negative ocean-air feedback system over the North Pacific in the transition from warm to seasons[J].Mon Wea Rev,1976,104(9):1107-1114.
[2]	BJERKNES J.A possible response of the atmospheric Hadley circulation to equatorial anomalies of ocean temperature[J].Tellus,1966,18(3):820-829.
[3]	BJERKNES J.Atmospheric teleconnections from the equatorial Pacific[J].Mon Wea Rev,1969,97(3):163-172.
[4]	KUTZBACH J E,CHERVIN R M,HOUGHTON D D.Response of the NCAR general circulation model to prescribed changes in ocean surface temperature Ⅰ——Mid-latitude changes[J].J Atmos Sci,1977,34(9):1200-1213.
[5]	CHERVIN R M,KUTZBACH J E,HOUGHTON D D.Response of the NCAR general circulation model to prescribed changes in ocean surface temperature Ⅱ——Mid-latitude and subtropical changes[J].J Atmos Sci,1980,37(2):308-332.
[6]	PITCHER E J,BLACKMAN M L,BATES G T,et al.The effects of the North Pacific sea surface temperature anomalies on the January climate of ageneral circulation model[J].J Atmos Sci,1988,45(2):173-188.
[7]	WEBSTER P J.Mechinism determining the atmospheric response to sea surface temperature anomalies[J].J Atmos Sci,1981,38(3):554-571.
[8]	HSIUNG J.Estimates of global oceanic meridional heat transport[J].J Phys Oceanogr,1985,15(11):1405-1413.
[9]	FRANKIGNOUL C,MOLIN A.Response of the GISS general circulation model to a midlatitude sea surface temperature anomaly in the North Pacific[J].J Atmos Sci,1988,45(1):95-108.
[10]	吴仁广,陈烈庭.PNA流型的年际变化及温、热带太平洋海温的作用[J].大气科学,1992,16(3):583-590.
[11]	袁佳双,郑庆林,宋青丽.北太平洋持续SSTA影响东亚初夏大气环流的数值试验[J].南京气象学院学报,2004,27(5):623-631.
[12]	施宁,施丹平,严明良.夏季越赤道气流对南海季风及华东旱涝的影响[J].热带气象学报,2001,17(4):405-414.
[13]	王澄海.中国西北春季降水与太平洋海温相关特征的研究[J].热带气象学报,2002,18(4):374-382
[14]	WANG Y F.Effects of blocking anticyclones in Eurasia in the rainy season(Meiyu/Baiu season)[J].J Meteo Soc Japan,1992,70(5):929-951.
[15]	魏东,王亚非,董敏.日本东部附近海域海温异常对鄂霍次克海高压的影响[J].气象学报,2006,64(4):510-518.
[16]	KALNAY E,COAUTHORS.The NCEP/NCAR 40-year reanalysis project[J].Bull Amer Meteor Soc,1996,77(3):437-471.
[17]	COLLINS W D,RASCH P J,et al.Description of the NCAR Community Atmosphere Model(CAM 3.0),Technical Report NCAR/TN-464+STR,National Center for Atmospheric Research[R].Boulder,Colorado,2004:210.
[18]	HUANG R H.The East Asia/Pacific pattern teleconnection of summer circulation and climate anomaly in East Asia[J].Acta Meteorological Sinica,1992,6(1):25-37.
[19]	HUANG R H,SUN F Y.Impacts of the tropical western Pacific on the East Asian summer monsoon[J].J Meteor Soc Japan,1992,70(1B):243-256.