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30 September 2009, Volume 21 Issue 3 Previous Issue    Next Issue

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ARCTIC MULTIYEAR ICE CONCENTRATION RETRIEVAL BASED ON AMSR-E 89 GHz DATA WANG Huan-Huan, Georg Heygster, HAN Shu-Zong, CHENG Bin 2009, 21 (3):  186-196.  Abstract ( 2122 )   PDF (3598KB) ( 2127 )   The 89 GHz channels of the passive microwave sensor AMSR-E have more than twice the horizontal resolution of its other lower frequency channels. The retrieval of total ice concentration based on the 89 GHz channels was well established,while retrieval of the multiyear ice concentration was little explored until now. The brightness temperatures of the AMSR-E 89 GHz channels are used to characterize their response to multiyear ice,first-year ice and open water. A simple algorithm,called Algorithm Currently (A... Related Articles | Metrics

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THE LEVEL,DISTRIBUTION AND TRANSPORTATION OF PERFLUORINATED COMPOUNDS IN ARCTIC AND ANTARCTIC WU Xiao-Guan, XIE Zhou-Qing 2009, 21 (3):  197-210.  Abstract ( 2651 )   PDF (552KB) ( 4287 )   PFCs has been widely used in the industry and our life. Recently,it has been found to be significant toxic for human and biology and then received intensively concerns. In the remote Antarctic and Arctic region,such compounds have also been found in the biological tissues and the other environmental materials,indicating that PFCs become a new global persistent organic pollution (POP). Its level,distribution and transportation should be attracted much attention and further investigation. Related Articles | Metrics

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THE CHANGES OF PIGMENTS CONTENT AND THEIR ENVIRONMENTAL IMPLICATIONS IN THE LAKE SEDIMENTS OF NY-LESUND,SVALBARD,ARCTIC JIANG Shan, LIU Xiao-Dong, XU Li-Jiang, SUN Li-Guang 2009, 21 (3):  211-220.  Abstract ( 3491 )   PDF (1341KB) ( 2273 )   According to palaeoclimatic and modern instrumental data,numerous studies have indicated that the Arctic climate has undergone a significant warming during the past 100 years,and this may lead to significant impact on the fragile lake ecosystem. In this study,we collected a lake sediment core from the Ny-lesund of Svalbard and determined the concentrations of four pigments including chlorophyll derivatives,total carotenoids,oscillaxanthin and myxoxanthophyll in the sediments. Combined with other physical a... Related Articles | Metrics

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TURBULENT PARAMETERS OF THE NEAR SURFACE LAYER OVER THE ICE SHEET NEARBY ZHONGSHAN STATION,EAST ANTARCTICA LIN Zhong, Bian-Lin-Gen, Ma-Yong-Feng, Dai-Chang-Gui 2009, 21 (3):  221-233.  Abstract ( 2817 )   PDF (806KB) ( 3007 )   Based on the eddy covariance measurements and the gradient observations in the near surface layer during the summer of 2008,The characteristics of surface turbulent parameters of the ice sheet nearby Zhongshan station over the Antarctica are presented. After performing the quality control with the triple rotation method and planar fit technique,turbulent intensity (I),stability parameter (z/L),surface friction velocity (u),drag coefficient (Cd),surface roughness (z0),momentum flux (τ) and sensible heat flux... Related Articles | Metrics

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INDICATOR OF EVOLUTION HISTORY OF EARLY SOLAR NEBULA——ACCRETION AND FORMATION PROCESS OF DIFFERENT TYPE OF METEORITE PARENT BODY WANG Dao-De, JIU Bing-Kuai, WANG Gui-Qin 2009, 21 (3):  234-254.  Abstract ( 2056 )   PDF (1863KB) ( 1883 )   The accretion and formation processes of different type of chondrite parent body are referred to as indicators of evolution history of early solar nebula. They include pre-solar grains in primitive chondrites providing information of stellar evolution outside solar system. Mineralogic-petrologic characteristics of primitive chondrites reveal process of condensation and accretion in the early solar nebula. Oxygen isotopic composition of the major components in primitive chondrites may provide strong evidence... Related Articles | Metrics