Improved Assimilation of Fengyun-3 Satellite-Based Snow Cover Fraction in Northeastern China

论文摘要

Assimilation of snow cover is an important method to improve the accuracy of snow simulation. However, the effects of snow assimilation are poor because satellite observed snow cover data contain erroneous information, such as cloud contamination. In this paper, an improved approach is proposed to reduce the effects of observational errors during assimilation of snow cover fraction acquired by the Fengyun-3（FY-3） satellite in northeastern China. A snow depth constraint was imposed on quality control of a snow depth product from a microwave radiation imager. The assimilation experiments were carried out before and after quality control（denoted as SCFDA and SCFDAWSD, respectively）. The snow cover fraction results were evaluated against the Moderate Resolution Imaging Spectroradiometer（MODIS） snow cover products. When assimilating the snow cover fraction with the snow depth constraint（i.e., SCFDAWSD）, substantially larger improvement was obtained than that without such a constraint/quality control（SCFDA）, and the deviation and root mean square error of the snow cover fraction were significantly reduced.The assimilation performance was also evaluated against in-situ snow depth observations. The SCFDAWSD also showed greater improvements during the snow accumulation and snowmelt periods than the SCFDA. The SCFDAWSD improvements in woodland and shrubland were the most obvious. At different altitudes, the effects of the SCFDAWSD were basically equivalent, and the deeper the snow depth was, the better the effect. In addition, the SCFDAWSD method was found in close agreement with the observations during a sudden snowfall event.

论文目录

文章来源

类型: 期刊论文

作者: Shuai ZHANG,Chunxiang SHI,Runping SHEN,Jie WU

来源: Journal of Meteorological Research 2019年05期

年度: 2019

分类: 基础科学,工程科技Ⅱ辑

专业: 气象学,航空航天科学与工程

单位: School of Geographic Sciences, Nanjing University of Information Science & Technology,National Meteorological Information Center,China Meteorological Administration,Laboratory for Climate Studies,National Climate Center, China Meteorological Administration

基金: Supported by the National Natural Science Foundation of China(91437220),National Key Research and Development Program of China(2018YFC1506601),China Meteorological Administration Special Public Welfare Research Fund(GYHY201506002)

分类号: P414.4

页码: 960-975

总页数: 16

文件大小: 6057K

下载量: 8

相关论文文献

• [1].Implications of diurnal variations in land surface temperature to data assimilation using MODIS LST data[J]. Journal of Geographical Sciences 2020(01)
• [2].Integrating a model with remote sensing observations by a data assimilation approach to improve the model simulation accuracy of carbon flux and evapotranspiration at two flux sites[J]. Science China(Earth Sciences) 2016(02)
• [3].Ocean satellite data assimilation experiments in FIO-ESM using ensemble adjustment Kalman filter[J]. Science China(Earth Sciences) 2016(03)
• [4].A dual-pass data assimilation scheme for estimating surface fluxes with FY3A-VIRR land surface temperature[J]. Science China(Earth Sciences) 2015(02)
• [5].Establishment and tests of EnOI assimilation module for WAVEWATCH Ⅲ[J]. Chinese Journal of Oceanology and Limnology 2015(05)
• [6].Impacts of Multigrid NLS-4DVar-based Doppler Radar Observation Assimilation on Numerical Simulations of Landfalling Typhoon Haikui (2012)[J]. Advances in Atmospheric Sciences 2020(08)
• [7].An evaluation of sea surface height assimilation using along-track and gridded products based on the Regional Ocean Modeling System(ROMS) and the four-dimensional variational data assimilation[J]. Acta Oceanologica Sinica 2018(09)
• [8].Analysis of influence of observation operator on sequential data assimilation through soil temperature simulation with common land model[J]. Water Science and Engineering 2018(03)
• [9].Monitoring the 2008 cold surge and frozen disasters snowstorm in South China based on regional ATOVS data assimilation[J]. Science China(Earth Sciences) 2010(08)
• [10].Effects of sample density on the assimilation performance of an explicit four-dimensional variational data assimilation method[J]. Science in China(Series D:Earth Sciences) 2009(11)
• [11].Incremental 4D-VAR assimilation scheme based on Lorenz model[J]. Acta Oceanologica Sinica 2008(S1)
• [12].Evaluation on data assimilation of a global high resolution wave-tide-circulation coupled model using the tropical Pacific TAO buoy observations[J]. Acta Oceanologica Sinica 2018(03)
• [13].Modeling study of a severe aerosol pollution event in December 2013over Shanghai China:An application of chemical data assimilation[J]. Particuology 2015(03)
• [14].An explicit four-dimensional variational data assimilation method based on the proper orthogonal decomposition: Theoretics and evaluation[J]. Science in China(Series D:Earth Sciences) 2009(02)
• [15].System of Multigrid Nonlinear Least-squares Four-dimensional Variational Data Assimilation for Numerical Weather Prediction(SNAP): System Formulation and Preliminary Evaluation[J]. Advances in Atmospheric Sciences 2020(11)
• [16].Characteristics of Fengyun-4A Satellite Atmospheric Motion Vectors and Their Impacts on Data Assimilation[J]. Advances in Atmospheric Sciences 2020(11)
• [17].Handling non-linearity in radar data assimilation using the non-linear least squares enhanced POD-4DVar[J]. Science China(Earth Sciences) 2017(03)
• [18].New data assimilation system DNDAS for high-dimensional models[J]. Chinese Physics B 2016(05)
• [19].Interplay between nitric oxide and sulfur assimilation in salt tolerance in plants[J]. The Crop Journal 2016(03)
• [20].A data assimilation-based method for optimizing parameterization schemes in a land surface process model[J]. Science China(Earth Sciences) 2015(12)
• [21].The impact of mean dynamic topography on a sea-level anomaly assimilation in the South China Sea based on an eddy-resolving model[J]. Acta Oceanologica Sinica 2012(05)
• [22].A new sequential data assimilation method[J]. Science in China(Series E:Technological Sciences) 2009(04)
• [23].Direct assimilation of satellite radiance data in GRAPES variational assimilation system[J]. Chinese Science Bulletin 2008(22)
• [24].Nitrate assimilation by marine heterotrophic bacteria[J]. Science China(Earth Sciences) 2016(03)
• [25].基于水文模型的蒸散发数据同化研究进展（英文）[J]. Journal of Geographical Sciences 2016(02)
• [26].On loan words between English and Chinese——Discussion about the openness and assimilation of the words system[J]. 科技信息 2008(31)
• [27].Measurement and Theoretical Perspectives of Immigrant Assimilation in China[J]. China Population Today 2012(06)
• [28].An Ensemble-Based Three-Dimensional Variational Assimilation Method for Land Data Assimilation[J]. Atmospheric and Oceanic Science Letters 2009(03)
• [29].Altimeter significant wave height data assimilation in the South China Sea using Ensemble Optimal Interpolation[J]. Chinese Journal of Oceanology and Limnology 2015(05)
• [30].Ectopic expression of fungal EcGDH improves nitrogen assimilation and grain yield in rice[J]. Journal of Integrative Plant Biology 2018(02)