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Building a high-resolution regional climate model for the Heihe River Basin and simulating precipitation over this region

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Xiong, Z, Yan, X.D. (2013). Building a high-resolution regional climate model for the Heihe River Basin and simulating precipitation over this region. Chinese Science Bulletin, 58(036), 4670-4678. doi:10.116/s11434-013-5971-3.

文献信息
Type Of Reference JOUR
Title Building a high-resolution regional climate model for the Heihe River Basin and simulating precipitation over this region
Authors Yan, XiaoDong
Secondary Title Chinese Science Bulletin
Abstract Based on the Regional Integrated Environmental Model System (RIEMS 2.0) developed by START TEA-COM RRC and Department of Atmospheric Science of Nanjing University, a dataset of observation and remote sensing over the Heihe River Basin (HRB) was used to recalibrate the model’s parameters, including topography elevation, land cover type, saturated soil water potential, saturated soil hydraulic conductivity, field moisture capacity, wilting point moisture, soil porosity, and parameter b of soil hydraulic conductivity, to build a high-resolution regional climate model for the HRB. Continuous simulation for the period from January 1 to December 31, 2000 was conducted using the regional climate model, with NCEP-FNL reanalysis data as the driving fields. The study focused on the ability of the model to simulate precipitation in the HRB. The analysis results showed the following: (1) For precipitation, the model could reproduce well the spatial pattern and seasonal cycle in different regions of the HRB, simulated precipitation was overestimated in the upper reaches of the HRB and underestimated in the lower reaches of the HRB, and seasonal precipitation biases were mostly in the range of −39.9%–9.6% of observations, which is mostly consistent with the IPCC report (2001). (2) The model could reproduce reasonably temporal evolution of pentad precipitation in different regions. Correlation coefficients between the simulated and observed pentad precipitation were 0.8123, 0.5064, and 0.7033 in the upper, middle, and lower reaches of the HRB, respectively. They reached a significance level of 1%. (3) Dynamical downscaling of a high-resolution regional climate model was used to overcome the deficiency of long-term, high-temporal/spatial-resolution meteorological dataset in the HRB, and to drive directly the integrated model that coupled ecological-hydrological and socioeconomic processes in the HRB.
Date 2013/12/01/
Year 2013
DOI 10.1007/s11434-013-5971-3
Database Provider link.springer.com
volume 58
Issue Number 36
Start Page 4670
Alternate Title1 Chin. Sci. Bull.
Language en
Issn 1001-6538, 1861-9541
Url http://link.springer.com/article/10.1007/s11434-013-5971-3
Access Date 2014/12/25/02:23:54
Keywords Chemistry/Food Science, general| Earth Sciences, general| Engineering, general| Heihe River Basin| High-resolution regional climate model| integration of eco-hydrological processes| Life Sciences, general| Physics, general| Science, general|
file_attachments2 http://link.springer.com/article/10.1007%2Fs11434-013-5971-3
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