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Ecological Assessment of Oxygen Balance:A Case Study of China’s Natural Oxygen Bars

Journal of meteorological Research 2023年第3期37卷 404-416页

作者： Hao GAO Xiuzhen HAN Xiurong WANG Yu FU Chen MIAO Key Laboratory of Radiometric Calibration and Validation for Environmental satellites National Satellite Meteorological Centre(National Centre for Space Weather)/CMA Innovation Centre for Fengyun Meteorological Satellites(FYSIC)China Meteorological Administration(CMA)Beijing 100081 Public meteorological Service Centre China Meteorological AdministrationBeijing 100081 Carbon Neutrality Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029 National Remote Sensing Center of China Beijing 100036

Ecological assessment plays a vital role in sustainable development of the environment,and thus exploration of specific and integrated ecological assessment methods has become a critical task.In this study,based on the concept of oxygen balance and by accommodating both natural factors and socioeconomic elements,we establish an oxygen(O_(2))balance index(OBI),i.e.,the ratio of the O_(2)production from the ecosystem to the O_(2)consumption by human behavior,based on the net primary productivity(NPP),fuel consumption,gross domestic production(GDP),population data,and so on.The results show that the spatial distributions of OBI in China are intimately correlated to the regional vegetation and socioeconomic development.The estimated OBI values are then validated by statistical data from 27 counties in China,and it is found that the OBI reflects the ecological environment status well.Moreover,the average OBI values derived from 190 natural oxygen bars in China reveal extreme imbalance between O_(2)production and consumption in highly developed regions,especially in the cities,in contrast to good O_(2)balance in areas with high-quality ecological status and less industrialization.The findings from this study have quantitatively captured the regional ecological quality,providing guidance for sustainable natural and socioeconomic developments in local areas of China.

关键词： oxygen balance index(OBI) ecological environment remote sensing China’s natural oxygen bars meteorological satellites

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Estimating the Retrievability of Temperature Profiles from Satellite Infrared Measurements

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Advances in Atmospheric Sciences 2006年第2期23卷 224-234页

作者：黄静邱崇践马刚张艳武 College of Atmospheric Sciences Lanzhou University Lanzhou 730000 National Satellite meteorological Center China meteorological Administration Beijing 100081 Cold and Arid Regions Environment and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000

A method is developed to assess retrievability, namely the retrieval potential for atmospheric temperature profiles, from satellite infrared measurements in clear-sky conditions. This technique is based upon generalized linear inverse theory and empirical orthogonal function analysis. Utilizing the NCEP global temperature reanalysis data in January and July from 1999 to 2003, the retrievabilities obtained with the Atmospheric Infrared Sounder （AIRS） and the High Resolution Infrared Radiation Sounder/3 （HIRS/3） sounding channel data are derived respectively for each standard pressure level on a global scale. As an incidental result of this study, the optimum truncation number in the method of generalized linear inverse is deduced too. The results show that the retrievabilities of temperature obtained with the two datasets are similar in spatial distribution and seasonal change characteristics. As for the vertical distribution, the retrievabilities are low in the upper and lower atmosphere, and high between 400 hPa and 850 hPa. For the geographical distribution, the retrievabilities are low in the low-latitude oceanic regions and in some regions in Antarctica, and relatively high in mid-high latitudes and continental regions. Compared with the HIRS/3 data, the retrievability obtained with the AIRS data can be improved by an amount between 0.15 and 0.40.

关键词： meteorological satellites generalized linear inverses temperature profiles EOF analysis retrievability

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