Acta Photonica Sinica, Volume. 52, Issue 3, 0352116(2023)

Observation and Inversion of the N2O Gas Column Concentration in Hefei,China

Wenxue PAN1,2, Yinbo HUANG1,3, Dandan LIU4, Jun HUANG1,2, Leilei ZHANG1,2, Jianyu LI1,3, Xingji LU1,3、*, and Zhensong CAO1,3
Author Affiliations
  • 1Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
  • 2Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
  • 3Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
  • 4College of Electrical and Optoelectronic Engineering, West Anhui University, Lu′an, 237012,China
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    Figures & Tables(16)
    FTIR based EM27/SUN spectrometer
    Structure diagram of EM27/SUN
    The flow chart of PROFFAST retrieval algorithm
    Calculated absorption spectroscopy of N2O by standard atmospheric model
    Time series of XN2O
    Hourly average daily variation of XN2O
    XN2O daily change with MODIS true color map and cloud product data map on November 9,and December 4,2021
    Diurnal time series of variable ground pressure on December 2,2021
    Relative difference of N2O retrievals with variable pressure used in the PROFFAST algorithm in an exemplary day(December 2,2021)
    Comparison of ground-based EM27/SUN with retrieved data from TCCON
    Measurements of XN2O with and without correction factors
    XN2O time series on 2 December 2021 before or after air mass dependence correction
    Correlation between the EM27/SUN and the reference TCCON data for XN2O in September,November and December
    • Table 1. Parameters for the air mass dependent and independent correction function for certain target gases in TCCON and EM27/SUN

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      Table 1. Parameters for the air mass dependent and independent correction function for certain target gases in TCCON and EM27/SUN

      GasTCCONEM27/SUN
      AICFADCFAICF(agasADCF(bgas
      CO20.989 8-0.006 80.986 20.005 0
      CH40.976 50.005 30.990 50.014 0
      CO1.067 2-0.048 30.925 00.103 0
      N2O0.963 80.003 9--
    • Table 2. Various target gases and spectral windows for the TCCON and EM27/SUN spectrometers

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      Table 2. Various target gases and spectral windows for the TCCON and EM27/SUN spectrometers

      GasTCCONEM27/SUN
      Central wavenumber/cm-1Window width/cm-1Spectral windows/cm-1Interference molecule
      N2O

      4 395.20

      4 430.10

      43.40

      23.10

      4 373.5~4 441.6CH4,H2O
      4 719.5073.104 682.5~4 756.1H2O,CO2
    • Table 3. Averages and standard deviation of XN2O in different site and spectral windows

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      Table 3. Averages and standard deviation of XN2O in different site and spectral windows

      SpectrometerSpectral windowsMeanSD
      EM27/SUN4 373.5~4 441.6326.372.56
      EM27/SUN4 682.5~4 756.1321.071.05
      TCCON-322.400.48
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    Wenxue PAN, Yinbo HUANG, Dandan LIU, Jun HUANG, Leilei ZHANG, Jianyu LI, Xingji LU, Zhensong CAO. Observation and Inversion of the N2O Gas Column Concentration in Hefei,China[J]. Acta Photonica Sinica, 2023, 52(3): 0352116

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    Paper Information

    Category: Special Issue for Frontiers and Techniques of Laser Spectroscopy

    Received: Jul. 29, 2022

    Accepted: Oct. 18, 2022

    Published Online: Jun. 21, 2023

    The Author Email: LU Xingji (xjlu@aiofm.ac.cn)

    DOI:10.3788/gzxb20235203.0352116

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