Journal of Atmospheric and Environmental Optics, Volume. 18, Issue 6, 569(2023)

Spatial-temporal mode analysis of cloud top pressure over East Asia during 2001―2021

SUN Le1,2, TANG Chaoli2、*, WEI Yuanyuan3, and HUANG Yourui2
Author Affiliations
  • 1Department of Computer Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • 2Institute of Electrical & Information Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • 3School of Internet, Anhui University, Hefei 230039, China
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    Figures & Tables(12)
    Comparison and correlation analysis between MODIS and AIRS satellite data. (a) Time series diagram; (b) correlation analysis chart
    CTP spatial distribution map of day and night (a), day (b), night (c) and altitude spatial distribution map (d) in East Asia from 2001 to 2021
    Seasonal variation of CTP over East Asia from 2000 to 2020
    Spatial distribution of CTP seasonal variations over East Asia from 2000 to 2020.(a) Spring; (b) summer; (c) autumn; (d) winter
    Results of CTP MK mutation testing in East Asia from 2001 to 2021. (a) Annual variation curve; (b) day and night MK; (c) day MK; (d) night MK
    Variation of CTP in East Asia from 2001 to 2021. (a) Month-on-month trend of East Asia; (b) month-on-month trend of Northeast China; (c) monthly trend of the Eastern Tibetan Plateau region; (d) monthly mean map of East Asia and its sub-regions ; (e) monthly zonal mean map of East Asia ; (f) interannual variation map of different latitudes in East Asia
    Zonal mean distribution of CTP over East Asia from 2001 to 2021
    Spatial distribution of CTP trends over East Asia from 2001 to 2021. (a) MK trend test variation chart; (b) annual rate of change
    EOF1 spatial distribution map (a) and time coefficient map (b) of CTP in East Asia from 2001 to 2021
    Spatial distribution map of the correlation coefficients between CTP and meteorological factors in East Asia from 2003 to 2021. (a) Surface temperature; (b) humidity; (c) atmospheric water vapor; (d) cloud cover
    • Table 1. Linear fitting and MK trend test for different time periods in East Asia from 2001 to 2021

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      Table 1. Linear fitting and MK trend test for different time periods in East Asia from 2001 to 2021

      Time quantumRate of change/(hPa·a-1)PZStandard deviation
      Day-night-0.0080.973-0.3936.18
      Day0.1720.4900.0916.51
      Night-0.0210.931-0.3936.34
    • Table 2. Variance contribution rate of the first six modes in EOF analysis of CTP over East Asia

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      Table 2. Variance contribution rate of the first six modes in EOF analysis of CTP over East Asia

      ModeVariance contribution rate/%Cumulative variance contribution rate/%
      EOF144.3344.33
      EOF213.7558.08
      EOF37.3765.45
      EOF45.2070.65
      EOF53.7574.40
      EOF63.3677.76
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    Le SUN, Chaoli TANG, Yuanyuan WEI, Yourui HUANG. Spatial-temporal mode analysis of cloud top pressure over East Asia during 2001―2021[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(6): 569

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    Paper Information

    Category:

    Received: Mar. 22, 2022

    Accepted: --

    Published Online: Dec. 22, 2023

    The Author Email: TANG Chaoli (chltang@mail.ustc.edu.cn)

    DOI:10.3969/j.issn.1673-6141.2023.06.006

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