| DOI: | 10.2172/1073505
|
| 报告号: | DOE/SC0001337-1
|
| 报告题名: | North Pacific Mesoscale Coupled Air-Ocean Simulations Compared with Observations |
| 作者: | Koracin, Darko; Cerovecki, Ivana; Vellore, Ramesh; Mejia, John; Hatchett, Benjamin; McCord, Travis; McLean, Julie; Dorman, Clive
|
| 出版年: | 2013
|
| 发表日期: | 2013-04-11
|
| 国家: | 美国
|
| 语种: | 英语
|
| 英文关键词: | regional climate modeling
; coupling atmospheric and ocean models
; air sea interaction
; Kuroshio Current
; north Pacific
; cold air outbreak
|
| 中文主题词: | 涡旋度
; 高温
; 平流热效
; 涡度
|
| 主题词: | VORTICITY
; HEAT
; ADVECTION
|
| 英文摘要: | Executive summary The main objective of the study was to investigate atmospheric and ocean interaction processes in the western Pacific and, in particular, effects of significant ocean heat loss in the Kuroshio and Kuroshio Extension regions on the lower and upper atmosphere. It is yet to be determined how significant are these processes are on climate scales. The understanding of these processes led us also to development of the methodology of coupling the Weather and Research Forecasting model with the Parallel Ocean Program model for western Pacific regional weather and climate simulations. We tested NCAR-developed research software Coupler 7 for coupling of the WRF and POP models and assessed its usability for regional-scale applications. We completed test simulations using the Coupler 7 framework, but implemented a standard WRF model code with options for both one- and two-way mode coupling. This type of coupling will allow us to seamlessly incorporate new WRF updates and versions in the future. We also performed a long-term WRF simulation (15 years) covering the entire North Pacific as well as high-resolution simulations of a case study which included extreme ocean heat losses in the Kuroshio and Kuroshio Extension regions. Since the extreme ocean heat loss occurs during winter cold air outbreaks (CAO), we simulated and analyzed a case study of a severe CAO event in January 2000 in detail. We found that the ocean heat loss induced by CAOs is amplified by additional advection from mesocyclones forming on the southern part of the Japan Sea. Large scale synoptic patterns with anomalously strong anticyclone over Siberia and Mongolia, deep Aleutian Low, and the Pacific subtropical ridge are a crucial setup for the CAO. It was found that the onset of the CAO is related to the breaking of atmospheric Rossby waves and vertical transport of vorticity that facilitates meridional advection. The study also indicates that intrinsic parameterization of the surface fluxes within the WRF model needs more evaluation and analysis. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1073505
|
| Citation statistics: |
|
| 资源类型: | 研究报告
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41183
|
| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
|
| File Name/ File Size |
Content Type |
Version |
Access |
License |
|
|---|
| 1073505.pdf（2989KB） | 研究报告 | -- | 开放获取 | | View
Download
|
|
| Recommended Citation: | |
Koracin, Darko,Cerovecki, Ivana,Vellore, Ramesh,et al. North Pacific Mesoscale Coupled Air-Ocean Simulations Compared with Observations. 2013-01-01.
|
|
|