中国地理科学 ›› 2017, Vol. 27 ›› Issue (1): 1-7.doi: 10.1007/s11769-017-0841-6

• 论文 •    下一篇

Global Water Vapor Content Decreases from 2003 to 2012: An Analysis Based on MODIS Data

MAO Kebiao1, CHEN Jingming2, LI Zhaoliang1, MA Ying1, SONG Yang3, TAN Xuelan4, Yang Kaixian5   

  1. 1. National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Plan-ning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Department of Geography, University of Toronto, Toronto M5S 3G3, Canada;
    3. School of Geographical Sciences, Northeast Normal University, Changchun 130024, China;
    4. College of Re-sources and Environments, Hunan Agricultural University, Changsha 410128, China;
    5. Department of Geography, University of Cin-cinnati, Cincinnati 45221, USA
  • 收稿日期:2016-08-12 修回日期:2016-11-01 出版日期:2017-02-27 发布日期:2017-01-06
  • 通讯作者: MAO Kebiao.E-mail:maokebiao@caas.cn E-mail:maokebiao@caas.cn
  • 基金资助:

    Under the auspices of National Key Research and Development Program (No. 2016YFC0500203), National Natural Science Foundation of China (No. 41571427)

Global Water Vapor Content Decreases from 2003 to 2012: An Analysis Based on MODIS Data

MAO Kebiao1, CHEN Jingming2, LI Zhaoliang1, MA Ying1, SONG Yang3, TAN Xuelan4, Yang Kaixian5   

  1. 1. National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Plan-ning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Department of Geography, University of Toronto, Toronto M5S 3G3, Canada;
    3. School of Geographical Sciences, Northeast Normal University, Changchun 130024, China;
    4. College of Re-sources and Environments, Hunan Agricultural University, Changsha 410128, China;
    5. Department of Geography, University of Cin-cinnati, Cincinnati 45221, USA
  • Received:2016-08-12 Revised:2016-11-01 Online:2017-02-27 Published:2017-01-06
  • Contact: MAO Kebiao.E-mail:maokebiao@caas.cn E-mail:maokebiao@caas.cn
  • Supported by:

    Under the auspices of National Key Research and Development Program (No. 2016YFC0500203), National Natural Science Foundation of China (No. 41571427)

摘要:

Water vapor in the earth's upper atmosphere plays a crucial role in the radiative balance, hydrological process, and climate change. Based on the latest moderate-resolution imaging spectroradiometer (MODIS) data, this study probes the spatio-temporal variations of global water vapor content in the past decade. It is found that overall the global water vapor content declined from 2003 to 2012 (slope b=-0.0149, R=0.893, P=0.0005). The decreasing trend over the ocean surface (b=-0.0170, R=0.908, P=0.0003) is more explicit than that over terrestrial surface (b=-0.0100, R=0.782, P=0.0070), more significant over the Northern Hemisphere (b=-0.0175, R=0.923, P=0.0001) than that over the Southern Hemisphere (b=-0.0123, R=0.826, P=0.0030). In addition, the analytical results indicate that water vapor content are decreasing obviously between latitude of 36°N and 36°S (b=0.0224, R=0.892, P=0.0005), especially between latitude of 0°N and 36°N (b=0.0263, R=0.931, P=0.0001), while the water vapor concentrations are increasing slightly in the Arctic regions (b=0.0028, R=0.612, P=0.0590). The decreasing and spatial variation of water vapor content regulates the effects of carbon dioxide which is the main reason of the trend in global surface temperatures becoming nearly flat since the late 1990s. The spatio-temporal variations of water vapor content also affect the growth and spatial distribution of global vegetation which also regulates the global surface temperature change, and the climate change is mainly caused by the earth's orbit position in the solar and galaxy system. A big data model based on gravitational-magmatic change with the solar or the galactic system is proposed to be built for analyzing how the earth's orbit position in the solar and galaxy system affects spatio-temporal variations of global water vapor content, vegetation and temperature at large spatio-temporal scale. This comprehensive examination of water vapor changes promises a holistic understanding of the global climate change and potential underlying mechanisms.

关键词: water vapor content, climate change, moderate-resolution imaging spectroradiometer (MODIS)

Abstract:

Water vapor in the earth's upper atmosphere plays a crucial role in the radiative balance, hydrological process, and climate change. Based on the latest moderate-resolution imaging spectroradiometer (MODIS) data, this study probes the spatio-temporal variations of global water vapor content in the past decade. It is found that overall the global water vapor content declined from 2003 to 2012 (slope b=-0.0149, R=0.893, P=0.0005). The decreasing trend over the ocean surface (b=-0.0170, R=0.908, P=0.0003) is more explicit than that over terrestrial surface (b=-0.0100, R=0.782, P=0.0070), more significant over the Northern Hemisphere (b=-0.0175, R=0.923, P=0.0001) than that over the Southern Hemisphere (b=-0.0123, R=0.826, P=0.0030). In addition, the analytical results indicate that water vapor content are decreasing obviously between latitude of 36°N and 36°S (b=0.0224, R=0.892, P=0.0005), especially between latitude of 0°N and 36°N (b=0.0263, R=0.931, P=0.0001), while the water vapor concentrations are increasing slightly in the Arctic regions (b=0.0028, R=0.612, P=0.0590). The decreasing and spatial variation of water vapor content regulates the effects of carbon dioxide which is the main reason of the trend in global surface temperatures becoming nearly flat since the late 1990s. The spatio-temporal variations of water vapor content also affect the growth and spatial distribution of global vegetation which also regulates the global surface temperature change, and the climate change is mainly caused by the earth's orbit position in the solar and galaxy system. A big data model based on gravitational-magmatic change with the solar or the galactic system is proposed to be built for analyzing how the earth's orbit position in the solar and galaxy system affects spatio-temporal variations of global water vapor content, vegetation and temperature at large spatio-temporal scale. This comprehensive examination of water vapor changes promises a holistic understanding of the global climate change and potential underlying mechanisms.

Key words: water vapor content, climate change, moderate-resolution imaging spectroradiometer (MODIS)