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Spatial distribution of 10m firn temperature in the Antarctic Ice Sheet

Science china Earth Sciences 2011年第5期54卷 655-666页

作者： wang yetang1,3 & hou shugui2.3 1 shandong marine fisheries research institute,yantai 2.4006,china 2 MOE,Key Laboratory for Coast and Island Development,School of Geographic and Oceanographic Sciences,Nanjing University,Nanjing 210093,china 3State Key Laboratory of Cryospheric Science,Cold and Arid Regions Environmental and Engineering research institute,Chinese Academy of Sciences,Lanzhou 730000,china 1. shandong marine fisheries research institute Yantai 264006 China3. State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China2. MOE Key Laboratory for Coast and Island Development School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China

A database of Antarctic 10 m firn temperature was constructed using available borehole temperature measurements with data quality control to extend knowledge of Antarctic climate. Slopes from a high-resolution digital elevation model and the main ice divide were used to delineate main drainage sectors across Antarctica. In each drainage sector, a quantitative relationship between temperature and latitude, longitude and altitude was established using available tim temperature data. Quantitative relationships incorporating other factors affecting Antarctic air temperature such as atmospheric circulation and small-scale to- pography were used to derive a 10-km resolution grid map of surface temperature. The resulting temperature patterns presented a reasonable depiction of both large and small-scale variations in Antarctic 10 m firn temperature. This map is useful for many spatial variation studies, Antarctic ice sheet models, and comparison with satellite-derived temperature data and outputs of atmospheric general circulation models.

关键词： Antarctica 10 m firn temperature spatial distribution

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Abundance and community of snow bacteria from three glaciers in the Tibetan Plateau

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Journal of Environmental Sciences 2010年第9期22卷 1418-1424页

作者： Shuhong Zhang Guangli Yang yetang wang shugui hou Department of Life Science Shangqiu Normal University Shangqiu 476000 China School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China Cold and Arid Regions Environmental and Engineering research institute Chinese Academy of Sciences Lanzhou 730000 China shandong marine fisheries research institute Yantai 264006 China

Bacterial abundance and diversity in snow of East Rongbuk, Laohugou and Halluogou glaciers on the Tibetan Plateau were investigated through epifluorescence microscope and denaturing gradient gel electrophoresis. Cell abundance ranged from 4.0 × 10^3 to 290.2 × 10^3 cells/mL. The phylogenetic trees placed the 16S rRNA sequences in four major groups： Proteobacteria, Firmicutes, Actinobacteria and Bacteroidetes. Brevundimonas, Flavobacterium, Hymenobacter, Bacillus, Polaromonas, Rhodoferax and Streptomyces were widely distributed bacteria in glaciers from different cold regions. The remaining five genera of Hylemonella, Delftia, Zoogloea, Blastococcus and Rhodococcus were endemism, only recovered from our investigated glaciers. It is proposed that the three glaciers on the Tibetan Plateau provide a specific ecological niche for prolonging survival of diverse microbial lineages.

关键词： bacterial diversity glacial snow the Tibetan Plateau

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Climatology of stable isotopes in Antarctic snow and ice:Current status and prospects

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Chinese Science Bulletin 2013年第10期58卷 1095-1106页

作者： hou shugui wang yetang PANG HongXi Key Laboratory for Coast and Island Development(Ministry of Education) School of Geographic and Oceanographic SciencesNanjing University State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences shandong Provincial Key Laboratory of marine Ecological Restoration Shandong Marine Fisheries Research Institute

Stable isotopic composition in Antarctic snow and ice is commonly regarded as one of invaluable palaeoclimate proxies and plays a critically important role in reconstructing past climate *** this paper we summarized the spatial distribution and the controlling factors of δD,δ18O,d-excess and 17O-excess in Antarctic snow and ice,and discussed their reliability and applicability as palaeoclimate *** progress in the stable isotopic records from Antarctic deep ice cores was reviewed,and perspectives on bridging the current understanding gaps were suggested.

关键词：稳定同位素气候变化南极冰雪气候代用指标同位素组成同位素记录控制因素

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