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A one-dimensional heat transfer model of the Antarctic ice Sheet and modeling of snow temperatures at Dome A, the summit of Antarctic Plateau

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Science China Earth Sciences 2010年第5期53卷 763-772页

作者： CHEN BaiLian1,3, ZHANG RenHe2, SUN ShuFen1, BIAN LinGen2, XIAO CunDe4,2 & ZHANG TingJun5 1 Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China 2 Chinese Academy of Meteorological Sciences, Beijing 100081, China 3 Graduate university of Chinese Academy of Sciences, Beijing 100049, China 4 cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 5 the national snow and ice data center, university of colorado, boulder, co 80309-0449, usa 1. Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China3. Graduate University of Chinese Academy of Sciences Beijing 100049 China2. Chinese Academy of Meteorological Sciences Beijing 100081 China4. Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China5. The National Snow and Ice Data Center University of Colorado Boulder CO 80309-0449 USA

A vertical one-dimensional numerical model for heat transferring within the near-surface snow layer of the Antarctic ice Sheet was developed based on simplified parameterizations of associated physical processes for the atmosphere, radiation, and snow/ice systems. Using the meteorological data of an automatic weather station (AWS) at Dome A (80°22′S, 70°22′E), we applied the model to simulate the seasonal temperature variation within a depth of 20 m. comparison of modeled results with observed snow temperatures at 4 measurement depths (0.1, 1, 3, 10 m) shows good agreement and consistent seasonal variations. The model results reveal the vertical temperature structure within the near-surface snow layer and its seasonal variance with more details than those by limited measurements. Analyses on the model outputs of the surface energy fluxes show that: 1) the surface energy balance at Dome A is characterized by the compensation between negative net radiation and the positive sensible fluxes, and 2) the sensible heat is on average transported from the atmosphere to the snow, and has an evident increase in spring. The results are considered well representative for the highest interior Antarctic Plateau.

关键词： Antarctic ice Sheet near-surface layer energy transfer numerical model

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全球气候研究计划 (WCRP)中的气候与冰冻圈项目 (CliC) :冰冻圈与气候的优先研究领域 (英)

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冰川冻土 2002年第5期24卷 523-525页

作者： Roger G. Barry (national snow and ice data center, university of colorado, boulder, co, 80309-0449, usa) national snow and ice data center University of Colorado 美国 Boulder CO

The cryosphere is an integral part of the global climate system, however, many aspects of the cryosphere have not been fully covered within WCRP. Issues relating to potential changes in the climate cryosphere system become more and more important in order to describes research and coordination initiatives required to integrate fully studies of impact and response of the cryosphere to climate change. The article also indicates the recent progress of CliC, and its future plan.

关键词：全球气候研究计划气候冰冻圈

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Characteristics of solar-irradiance spectra from measurements,modeling,and theoretical approach

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Light(Science & Applications) 2022年第4期11卷 565-579页

作者： Gerard Thuillier Ping Zhu Martin snow Peng Zhang Xin Ye Physikalisch-Meteorologisches Observatorium Davos World Radiation Centre(PMODWRC) Davos DorfSwitzerland. Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of Science3888 Dong Nanhu RoadChangchun 130033China. Royal Observatory of Belgium Av.Circulaire 31180 BrusselsBelgium. Laboratory for Atmospheric and Space Physics University of Colorado BoulderBoulderCO 80309USA South African national Space Agency(SANSA) Hospital StreetHermanus 7200South Africa university of the Western Cape Department of Physics and AstronomyRobert Sobukwe RdBelvilleCape Town 7535South Africa. national Satellite Meteorological center China Meteorological AdministrationBejjing 100081China Innovation center for FengYun Meteorological Satellite China Meteorological AdministrationBeijing 100081China

An accurate solar-irradiance spectrum is needed as an input to any planetary atmosphere or climate *** on the spectral characteristics of the chosen model,uncertainties in the iradiance may introduce significant differences in atmospheric and climate *** is why several solar spectral-irradiance data sets have been published during the last *** have been obtained by different methods:either measurements from a single instrument or a composite of different spectra,or they are theoretical or semi-empirical solar *** this paper,these spectral datasets will be compared in terms of iradiance,power per spectral interval,their derived solar-atmosphere brightness temperature,and time *** the different sources of these spectra are,they generally agree to within their quoted *** solar-rotation effect simultaneously observed by SORCE and PREMOS-PIC ARD is accurately *** 11-year long-term variability remains a difficult task,given the weak activity of solar cycle 24 and long-term instrument aging.

关键词： irradiance planetary climate

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The signature analysis of summer Antarctic sea-ice distribution by ship-based sea-ice observation

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Research in cold and Arid Regions 2009年第4期1卷 300-306页

作者： ShuLin Tang 1,Ning Li 1,AnNan Jiang 2,XingRu Zhou 1 1.China Railway 21st Bureau Group co.,LTD,Lanzhou 730000,China.2.Institute of Highway and Bridge,Dalian Maritime university,Dalian 116026,China. China Railway 21st Bur Grp co LTD Lanzhou 730000 Peoples R China Dalian Maritime Univ Inst Highway & Bridge Dalian 116026 Peoples R China

Based on the Chinese 19th national Antarctic Research Expedition,we carried out ship-based Antarctic sea-ice observa-tion on icebreaker Xue Long using Antarctic sea-ice process and climate (ASPeCt) criteria during austral ***-ice distribution data were obtained along nearly 6,500 km of the ship’s *** measurement parameters included sea-ice thickness,sea-ice concentration,snow thickness,and floe *** showed the presence of the large spatial varia-tions of the observed sea-ice ***-ice concentration varied between 0 and 80 percent and reached its peak value in Weddell Sea because of the specific dynamical process affecting in summer sea-ice *** are large areas of open water along the study *** ice and the upper snow thickness of the section varied between 10 cm and 210 cm and 2 cm and 80 cm,respectively,and each reaches its peak values near Amery ice *** floe size varied from less than 10 cm and the maximum of more than 2,000 km along the section.

关键词： Antarctic sea ice ship-based observation

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