Impact of diurnal atmosphere-ocean coupling on tropical climate simulations using a coupled GCM SCIE SCOPUS

Cited 36 time in WEB OF SCIENCE Cited 35 time in Scopus
Title
Impact of diurnal atmosphere-ocean coupling on tropical climate simulations using a coupled GCM
Author(s)
Ham, Yoo-Geun; Kug, Jong-Seong; Kang, In-Sik; Jin, Fei-Fei; Timmermann, Axel
Publication Year
2010-05
Abstract
The impacts of diurnal atmosphere-ocean (air-sea) coupling on tropical climate simulations are investigated using the SNU coupled GCM. To investigate the effect of the atmospheric and oceanic diurnal cycles on a climate simulation, a 1-day air-sea coupling interval experiment is compared to a 2-h coupling experiment. As previous studies have suggested, cold temperature biases over equatorial western Pacific regions are significantly reduced when diurnal air-sea coupling strategy is implemented. This warming is initiated by diurnal rectification and amplified further by the air-sea coupled feedbacks. In addition to its effect on the mean climatology, the diurnal coupling has also a distinctive impact on the amplitude of the El Nino-Southern Oscillation (ENSO). It is demonstrated that a weakening of the ENSO magnitude is caused by reduced (increased) surface net heat fluxes into the ocean during El Nino (La Nina) events. Primarily, decreased (increased) incoming shortwave radiation during El Nino (La Nina) due to cloud shading is responsible for the net heat fluxes associated with ENSO.
ISSN
0930-7575
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4102
DOI
10.1007/s00382-009-0586-8
Bibliographic Citation
CLIMATE DYNAMICS, v.34, no.6, pp.905 - 917, 2010
Publisher
SPRINGER
Subject
SEA-SURFACE TEMPERATURE; GENERAL-CIRCULATION MODEL; DATA ASSIMILATION ANALYSIS; INTRASEASONAL VARIABILITY; MIXED-LAYER; EL-NINO; CONVECTIVE ADJUSTMENT; EQUATORIAL PACIFIC; BOUNDARY-LAYER; ENSO MODE
Keywords
Diurnal coupling; Coupled GCM; ENSO; Tropical climate simulation
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse