Observation, analysis and model interactive study for the understanding of global dust dynamical processes.

了解全球沙尘动力学过程的观测、分析和模型交互研究。

基本信息

批准号：
20244078
负责人：
MIKAMI Masao
金额：
$ 30.87万
依托单位：
Japan, Meteorological Research Institute
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2008
资助国家：
日本
起止时间：
2008 至 2010
项目状态：
已结题

项目摘要

Development of global dust model that can evaluate a dust impact on the climate was made from (1) monitoring of dust emission processes, (2) analysis on dust transport processes using Lidar data, (3) network monitoring of dust wet and dry depositions, and (4) development of new data assimilation system for the model. The results were summarized as follows ; (1) size resolved monitoring of dust emission was developed and was used for the validation of dust emission schemes, (2) long-range and high altitude transport characteristics of Asian dust was revealed by the lidar observation and it is shown that the change of the shape accompanied with the internal mixture is more important than the change of size distribution during the long-range transportation, (3) validation and improvement of dust particle size distribution and dust emission processes of MASINGAR, a global dust model, were done using wet and dry deposition data, and (4) Model error estimation was made by the dust data assimilation system using EnKF technique and satellite lidar data and the model representation of dust distribution was improved by this system. As a result, we could improve the global dust model for its representation of emission, transportation and deposition processes.

开发了可以评估灰尘对气候影响的全球灰尘模型，包括（1）灰尘排放过程监测，（2）利用激光雷达数据分析灰尘输送过程，（3）灰尘湿沉积和干沉积的网络监测， (4)为模型开发新的资料同化系统。结果总结如下： (1) 开发了沙尘排放尺寸分辨监测并用于沙尘排放方案的验证，(2) 通过激光雷达观测揭示了亚洲沙尘的远距离和高空输送特征，并表明了沙尘排放的变化长距离输送过程中，内部混合物所伴随的形状比粒径分布的变化更重要。（3）采用湿法对MASINGAR全球粉尘模型的粉尘粒径分布和粉尘排放过程进行了验证和改进和干沉积数据，以及（4）模型误差估计沙尘数据同化系统利用EnKF技术和卫星激光雷达数据制作了沙尘数据同化系统，并改进了沙尘分布的模型表示。因此，我们可以改进全球尘埃模型来表示排放、运输和沉积过程。

项目成果

期刊论文数量（86）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Impact of Chinese anthropogenic emissions on submicrometer aerosol concentration at Mt. Tateyama, Japan

DOI：
10.5194/acp-9-9111-2009
发表时间：
2009-12
期刊：
Atmospheric Chemistry and Physics
影响因子：
6.3
作者：
K. Osada;T. Ohara;I. Uno;M. Kido;H. Iida
通讯作者：
K. Osada;T. Ohara;I. Uno;M. Kido;H. Iida

Summertime Taklimakan dust structure

DOI：
10.1029/2008gl035630
发表时间：
2008-12
期刊：
Geophysical Research Letters
影响因子：
5.2
作者：
Y. Hara;I. Uno;K. Yumimoto;Masanobu Tanaka;A. Shimizu;N. Sugimoto;Zhaoyan Liu
通讯作者：
Y. Hara;I. Uno;K. Yumimoto;Masanobu Tanaka;A. Shimizu;N. Sugimoto;Zhaoyan Liu

Threshold Friction Velocities of Saltation Sand Particles for Different Soil Moisture Conditions in the Taklimakan Desert