| 项目编号: | 1449633
|
| 项目名称: | Collaborative Research: Quantification of Gravity Wave Momentum Fluxes and Instability Events in the Mesosphere and Lower Thermosphere (MLT) Region at High- and Mid- Latitudes |
| 作者: | David Fritts
|
| 承担单位: | G & A Technical Software, Inc.
|
| 批准年: | 2014
|
| 开始日期: | 2015-09-01
|
| 结束日期: | 2017-08-31
|
| 资助金额: | USD40000
|
| 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: | instability dynamics
; mlt
; momentum deposition
; mid-latitude mlt region
; middle atmosphere research
; space-atmospheric interaction region
; gravity wave
; advanced mesosphere temperature mapper
; momentum transport
; gw momentum flux
|
| 英文摘要: | This project involves comprehensive observational studies, guided by state-of-the-art modeling, to quantify gravity wave (GW) momentum transport and the instability dynamics that drive energy and momentum deposition and GW spectral evolution in the mesosphere and lower thermosphere (MLT) region. The observations will build on recent successes by this team employing an Advanced Mesosphere Temperature Mapper (AMTM), the Weber Wind and Temperature sodium lidar, and other correlative instrumentation operated at the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) in northern Norway (69.3oN). These earlier correlative measurement capabilities have demonstrated an excellent potential to quantify GW momentum fluxes, and the GW characteristics that account for these fluxes, to a degree not possible with traditional airglow imagers or wind profiling radars or lidars. As such, this program represents a new frontier in the community's ability to measure, explore and understand small-scale GW and instability dynamics in the MLT that directly impact the Space-Atmospheric Interaction Region (SAIR) of prime importance to the NSF Aeronomy and CEDAR programs.
These studies will continue to employ the high-quality correlative wintertime measurement capabilities at ALOMAR and will include extensive summertime Na lidar and AMTM measurement capability recently available at Bear Lake Observatory (BLO) and the nearby Utah State University (USU) campus (41.9oN). Together these two data sets will provide an excellent measure of the different geophysical forcing effects on the high- and mid-latitude MLT region. These facilities provide the best potential for multiple correlative data sets, given the on-site access to lidar operators. These proven measurement capabilities will also facilitate estimates of the spatial and temporal scales of the GW packets, accounting for mean forcing and the generation of secondary GWs, which are largely unknown at present, but are needed for understanding and parameterizing GW effects in weather, climate, and general circulation models addressing both research and societal needs. The measurements from these two stations, if successful, will provide the necessary inputs for a realistic model development. |
| 资源类型: | 项目
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93377
|
| 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: | |
David Fritts. Collaborative Research: Quantification of Gravity Wave Momentum Fluxes and Instability Events in the Mesosphere and Lower Thermosphere (MLT) Region at High- and Mid- Latitudes. 2014-01-01.
|
|
|