地表過程參數化及觀測之研究;A Study on Land Surface Process Parameterization and Observations

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题名:	地表過程參數化及觀測之研究;A Study on Land Surface Process Parameterization and Observations
作者:	劉說安
贡献者:	國立中央大學太空及遙測研究中心
关键词:	大氣科學;地球科學;太空科技
日期:	2012-12-01
上传时间:	2014-03-17 11:31:48 (UTC+8)
出版者:	行政院國家科學委員會
摘要:	研究期間：10108~10207;Land surface process parameterization plays a very important role in the numerical weather model and global circulation model through quantifying the exchange of energy and water between the land and the air. Its observation is used to support the claim of global warming of the mainstream meteorologists on the one hand; on the other hand, its unreliability also becomes the claim for those who suspect global warming. Therefore, this project plans to be three years. We will apply four evapotranspiration measurement systems set up since 2005 and information from the existing ground observation stations, investigating the unreliability of land surface processes, parameterization and optimization of land surface processes observation in order to improve the parameterization of land surface processes and the theory and techniques of observation. Following is the three-year project: in the first year, we aim to enhance the stability of observation stations, targeting at comprehensive analysis on information of existing stations, upgrading, maintaining and testing operations of its software and hardware, including analyzing past five-year and current observing data, "Sustainable power supply system," "Observation and Recording System" and "Remote Data Transmission System", forming into automated surface observing system (ASOS). In the second year, we aim to enhance the accuracy of observation stations. The observation stations currently use the Bowen ratio and the eddy covariance system for the doubt that energy balance cannot be closed (Rn + G0 / H + LH ≠ 1). We will parameterize the energy exchange process between the land surface and the lower atmosphere, with the surface energy balance of the original treatment (Rn = G0 + H + LH) to set up the correction operation of the parameterization, in order to provide a way to improve the problem that the energy balance cannot be closed so that we will obtain the more accurate information from ground observation stations and calculate the characteristics of surface flux. In the third year, we aim to enhance the reliability of comprehensive observation network. We will establish the station network among information of different land surface process to execute the regional parameterization calculation based on the point of view of land surface observation and sub-telemetry data interpretation so that we can compare, analyze and correct algorithm parameterizations and reduce the observation inaccuracy caused by the change of surface process.
關聯:	財團法人國家實驗研究院科技政策研究與資訊中心
显示于类别:	[太空及遙測研究中心] 研究計畫

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