Impacts of Nudged Sea Surface Temperature on Tropical Precipitation, Moisture, and Vertical Velocity in an Earth System Model

被引:2
|
作者
Kong, Xianghui [1 ,2 ]
Jin, Jiangbo [3 ]
Wang, Aihui [1 ,2 ]
Dong, Xiao [3 ]
Bi, Xunqiang [4 ]
Zhang, He [3 ]
机构
[1] Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China
[2] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Nanjing, Peoples R China
[3] Chinese Acad Sci, Inst Atmospher Phys, Int Ctr Climate & Environm Sci, Beijing, Peoples R China
[4] Chinese Acad Sci, Climate Change Res Ctr, Inst Atmospher Phys, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Atmosphere-ocean interaction; Sea surface temperature; Climate models; Model evaluation/performance; WATER-VAPOR; EL-NINO; HOURLY PRECIPITATION; DOUBLE-ITCZ; CLIMATE; ATMOSPHERE; RESOLUTION; VERSION; PARAMETERIZATION; VARIABILITY;
D O I
10.1175/JCLI-D-23-0355.1
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Understanding the effect of the nudged sea surface temperature (SST) on precipitation simulation is impor-tant in Earth system models. In this study, we analyzed the role of nudged SST and air-sea interaction in precipitation sim-ulation by using the Chinese Academy of Sciences Earth System Model version 2 (CAS-ESM2). CAS-ESM2 fully coupled runs with and without nudged tropical SST to observations, and the atmosphere-only runs (AMIP) are comprehensively evaluated against observations and reanalysis over the tropical ocean from 1982 to 2015. The precipitation is affected by the nudged SST and air-sea interaction by means of changes in both thermodynamic and dynamic processes. Simulation with the nudged SST dramatically improves the climatological precipitation fields over the tropics and four regional areas. As the simulated SSTs are nudged toward the observations, CAS-ESM2 well reproduces the mean annual values in column water vapor (CWV), vertical structure of specific humidity, and large-scale circulation. The nudged SST run also captures a wide range of the complex interactions between SST, precipitation, moisture, and large-scale circulations, as measured by the monthly relationships and bivariate probability distribution function. The biases in heavy precipitation associated with the CWV induced under moist conditions are decreased by applying the nudging technique. In particular, the nudging run performs better in reproducing the SST-precipitation covariability than the control and AMIP runs. However, CAS-ESM2 with nudged tropical SST simulates the degradation of strong ascending motions, which is similar to the AMIP runs and re-flects the deviation of the atmospheric model. Our results confirm that the fully coupled run using the nudged SST is a method for improving the precipitation simulation across the tropical oceans.
引用
收藏
页码:457 / 473
页数:17
相关论文
共 50 条
  • [1] Impacts of Model Horizontal Resolution on Mean Sea Surface Temperature Biases in the Community Earth System Model
    Xu, Gaopeng
    Chang, Ping
    Ramachandran, Sanjiv
    Danabasoglu, Gokhan
    Yeager, Stephen
    Small, Justin
    Zhang, Qiuying
    Jing, Zhao
    Wu, Lixin
    JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2022, 127 (12)
  • [2] Tropical tropospheric, temperature and precipitation response to sea surface temperature forcing
    Su, H
    Neelin, JD
    Meyerson, JE
    EARTH'S CLIMATE: THE OCEAN-ATMOSPHERE INTERACTION, 2004, 147 : 379 - 392
  • [3] Impacts of sea surface temperature in the tropical Pacific on interannual variability of Madden-Julian oscillation in precipitation
    Li, W
    Yu, RC
    Zhang, XH
    ADVANCES IN ATMOSPHERIC SCIENCES, 2001, 18 (03) : 429 - 444
  • [4] Impacts of sea surface temperature in the tropical Pacific on interannual variability of Madden-Julian Oscillation in precipitation
    Li Wei
    Yu Rucong
    Zhang Xuehong
    Advances in Atmospheric Sciences, 2001, 18 (3) : 429 - 444
  • [5] Precipitation Sensitivity to Local Variations in Tropical Sea Surface Temperature
    He, Jie
    Johnson, Nathaniel C.
    Vecchi, Gabriel A.
    Kirtman, Ben
    Wittenberg, Andrew T.
    Sturm, Stephan
    JOURNAL OF CLIMATE, 2018, 31 (22) : 9225 - 9238
  • [6] High sensitivity of tropical precipitation to local sea surface temperature
    Peter Good
    Robin Chadwick
    Christopher E. Holloway
    John Kennedy
    Jason A. Lowe
    Romain Roehrig
    Stephanie S. Rushley
    Nature, 2021, 589 : 408 - 414
  • [7] Global tropical cyclone precipitation scaling with sea surface temperature
    Stansfield, Alyssa M.
    Reed, Kevin A.
    NPJ CLIMATE AND ATMOSPHERIC SCIENCE, 2023, 6 (01)
  • [8] High sensitivity of tropical precipitation to local sea surface temperature
    Good, Peter
    Chadwick, Robin
    Holloway, Christopher E.
    Kennedy, John
    Lowe, Jason A.
    Roehrig, Romain
    Rushley, Stephanie S.
    NATURE, 2021, 589 (7842) : 408 - +
  • [9] Global tropical cyclone precipitation scaling with sea surface temperature
    Alyssa M. Stansfield
    Kevin A. Reed
    npj Climate and Atmospheric Science, 6
  • [10] Impacts of Vertical Migrants on Biogeochemistry in an Earth System Model
    Getzlaff, Julia
    Kriest, Iris
    GLOBAL BIOGEOCHEMICAL CYCLES, 2024, 38 (07)