| 项目编号: | 1445875
|
| 项目名称: | The Role of Radiation in Tropical Cyclone Genesis and Early Intensification |
| 作者: | Melville Nicholls
|
| 承担单位: | University of Colorado at Boulder
|
| 批准年: | 2014
|
| 开始日期: | 2015-03-15
|
| 结束日期: | 2018-02-28
|
| 资助金额: | USD594675
|
| 资助来源: | US-NSF
|
| 项目类别: | Continuing grant
|
| 国家: | US
|
| 语种: | 英语
|
| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
|
| 英文关键词: | radiation
; role
; tropical cyclogenesis
; genesis
; tropical cyclone
; crucial role
; early morning hour
; tropical meteorology
; genesis pathway
; early stage
|
| 英文摘要: | Abstract
This proposal seeks to transform our knowledge of the role of radiation in tropical cyclogenesis. Evidence suggests that radiation could play a crucial role in the early stages of genesis, particularly with the nighttime cooling and enhanced convection in the early morning hours. However, the complicated pathway to genesis under the influence of radiation and induced circulations is not well understood. Two genesis pathways have been identified in past work by the investigators in this study, and the role of radiation in these pathways will be examined in this research.
Intellectual Merit
This study will add to our understanding of tropical cyclogenesis by elucidating the role of radiation in the core of tropical cyclones and in the surrounding environment. The investigation will also explore other phenomena like the diurnal cycle of deep convection that appear to be connected to radiative forcing. While the vorticity field appears to be full of both positive and negative components near cold pool edges, overall vorticity increases with time. These are cutting-edge questions to explore now that we have the computational horsepower to simulate radiation and microphysics on cloud-resolving grids. Previous generations of models showed a diurnal cycle of convection (thunderstorms) but weren't able to simulate growth of the cirrus cloud canopy and the expanding cold rings aloft--features that are evident in nature. Progress under this proposal would build on previous work and improve our knowledge in this area of tropical meteorology.
Broader Impacts
This study will improve our understanding of the role of radiation in tropical cyclogenesis and could eventually lead to improved forecasting of these destructive storms. This research should help us understand how tropical cyclogenesis in future climates may differ from the present. Results will be disseminated to the community through conferences, workshops and published in peer-reviewed journals. A web site will be established to more broadly disseminate research results and provide open communications with the community. |
| 资源类型: | 项目
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95016
|
| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
|
|
There are no files associated with this item.
|
| Recommended Citation: | |
Melville Nicholls. The Role of Radiation in Tropical Cyclone Genesis and Early Intensification. 2014-01-01.
|
|
|