Carbon dioxide vertical profile retrieving from proxy in MLT region: Monte Carlo uncertainty study

Valentine Yankovsky, Ekaterina Vorobeva

Research output

Abstract

In the framework of the YM2011 model of electronical-vibrational kinetics, we have demonstrated that collisional quenching with CO2 is essential for the only one proxy, O2(b, v = 0) [1]. The remaining proxies, O(1D), O2(b, v= 2 or 1), O2(a, v= 0 or 1), do not depend on [CO2] as it was shown using the photochemical model YM2011. However, the population of the level O2(b, v = 0) depends also on the overlying level O2(b, v = 1) due to the fast E-V energy transfer in the reaction O2(b, v= 1) + O2(X, v = 0) --> O2(X, v = 1) + O2(b, v= 0). Thus, to retrieve the altitude profile of [CO2] in the daytime mesosphere and lower thermosphere (MLT), we developed a method that uses the simultaneous measurement of the volume emission rates for the transitions from two excited levels of the oxygen molecule, O2(b, v= 0) and O2(b, v= 1).
The uncertainty of retrieval of the CO2 concentration was estimated by the Monte Carlo method taking into account
the errors of all the YM2011 model parameters without exception. The proposed algorithm allows to obtain the altitude profile of CO2 concentration in the range of 50 – 85 km with an uncertainty of 10 –20% and in the range of 85 – 100 km with an uncertainty of 20 – 60%. The simultaneous retrieval of altitude profiles of ozone concentration (in the altitude range of 50–100 km) and atomic oxygen concentration (above 89 km) is also possible by using
respective proxies. In addition, we compared the results obtained with the results of the sensitivity analysis [1].
Funding: This work was supported by the Russian Fund for Basic Research (grant RFBR No.17-05-00532).
Original languageEnglish
Pages (from-to)3512
JournalGeophysical Research Abstracts
Volume21
Publication statusPublished - 11 Apr 2019
EventThe General Assembly EGU, Vienna, Austria, 7–12 April 2019 - Vienna, Austria, Вена
Duration: 7 Apr 201912 Apr 2019
Conference number: 21
https://egu2019.eu/about_and_support/general_information.html

Scopus subject areas

  • Environmental Science(all)

Cite this

@article{fdf226ce21094bee901cfd457e8c6097,
title = "Carbon dioxide vertical profile retrieving from proxy in MLT region: Monte Carlo uncertainty study",
abstract = "In the framework of the YM2011 model of electronical-vibrational kinetics, we have demonstrated that collisional quenching with CO2 is essential for the only one proxy, O2(b, v = 0) [1]. The remaining proxies, O(1D), O2(b, v= 2 or 1), O2(a, v= 0 or 1), do not depend on [CO2] as it was shown using the photochemical model YM2011. However, the population of the level O2(b, v = 0) depends also on the overlying level O2(b, v = 1) due to the fast E-V energy transfer in the reaction O2(b, v= 1) + O2(X, v = 0) --> O2(X, v = 1) + O2(b, v= 0). Thus, to retrieve the altitude profile of [CO2] in the daytime mesosphere and lower thermosphere (MLT), we developed a method that uses the simultaneous measurement of the volume emission rates for the transitions from two excited levels of the oxygen molecule, O2(b, v= 0) and O2(b, v= 1).The uncertainty of retrieval of the CO2 concentration was estimated by the Monte Carlo method taking into accountthe errors of all the YM2011 model parameters without exception. The proposed algorithm allows to obtain the altitude profile of CO2 concentration in the range of 50 – 85 km with an uncertainty of 10 –20{\%} and in the range of 85 – 100 km with an uncertainty of 20 – 60{\%}. The simultaneous retrieval of altitude profiles of ozone concentration (in the altitude range of 50–100 km) and atomic oxygen concentration (above 89 km) is also possible by usingrespective proxies. In addition, we compared the results obtained with the results of the sensitivity analysis [1].Funding: This work was supported by the Russian Fund for Basic Research (grant RFBR No.17-05-00532).",
keywords = "Monte carlo method",
author = "Valentine Yankovsky and Ekaterina Vorobeva",
note = "Geophysical Research Abstracts, Vol.21, EGU2019 -3512",
year = "2019",
month = "4",
day = "11",
language = "English",
volume = "21",
pages = "3512",
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TY - JOUR

T1 - Carbon dioxide vertical profile retrieving from proxy in MLT region: Monte Carlo uncertainty study

AU - Yankovsky, Valentine

AU - Vorobeva, Ekaterina

N1 - Geophysical Research Abstracts, Vol.21, EGU2019 -3512

PY - 2019/4/11

Y1 - 2019/4/11

N2 - In the framework of the YM2011 model of electronical-vibrational kinetics, we have demonstrated that collisional quenching with CO2 is essential for the only one proxy, O2(b, v = 0) [1]. The remaining proxies, O(1D), O2(b, v= 2 or 1), O2(a, v= 0 or 1), do not depend on [CO2] as it was shown using the photochemical model YM2011. However, the population of the level O2(b, v = 0) depends also on the overlying level O2(b, v = 1) due to the fast E-V energy transfer in the reaction O2(b, v= 1) + O2(X, v = 0) --> O2(X, v = 1) + O2(b, v= 0). Thus, to retrieve the altitude profile of [CO2] in the daytime mesosphere and lower thermosphere (MLT), we developed a method that uses the simultaneous measurement of the volume emission rates for the transitions from two excited levels of the oxygen molecule, O2(b, v= 0) and O2(b, v= 1).The uncertainty of retrieval of the CO2 concentration was estimated by the Monte Carlo method taking into accountthe errors of all the YM2011 model parameters without exception. The proposed algorithm allows to obtain the altitude profile of CO2 concentration in the range of 50 – 85 km with an uncertainty of 10 –20% and in the range of 85 – 100 km with an uncertainty of 20 – 60%. The simultaneous retrieval of altitude profiles of ozone concentration (in the altitude range of 50–100 km) and atomic oxygen concentration (above 89 km) is also possible by usingrespective proxies. In addition, we compared the results obtained with the results of the sensitivity analysis [1].Funding: This work was supported by the Russian Fund for Basic Research (grant RFBR No.17-05-00532).

AB - In the framework of the YM2011 model of electronical-vibrational kinetics, we have demonstrated that collisional quenching with CO2 is essential for the only one proxy, O2(b, v = 0) [1]. The remaining proxies, O(1D), O2(b, v= 2 or 1), O2(a, v= 0 or 1), do not depend on [CO2] as it was shown using the photochemical model YM2011. However, the population of the level O2(b, v = 0) depends also on the overlying level O2(b, v = 1) due to the fast E-V energy transfer in the reaction O2(b, v= 1) + O2(X, v = 0) --> O2(X, v = 1) + O2(b, v= 0). Thus, to retrieve the altitude profile of [CO2] in the daytime mesosphere and lower thermosphere (MLT), we developed a method that uses the simultaneous measurement of the volume emission rates for the transitions from two excited levels of the oxygen molecule, O2(b, v= 0) and O2(b, v= 1).The uncertainty of retrieval of the CO2 concentration was estimated by the Monte Carlo method taking into accountthe errors of all the YM2011 model parameters without exception. The proposed algorithm allows to obtain the altitude profile of CO2 concentration in the range of 50 – 85 km with an uncertainty of 10 –20% and in the range of 85 – 100 km with an uncertainty of 20 – 60%. The simultaneous retrieval of altitude profiles of ozone concentration (in the altitude range of 50–100 km) and atomic oxygen concentration (above 89 km) is also possible by usingrespective proxies. In addition, we compared the results obtained with the results of the sensitivity analysis [1].Funding: This work was supported by the Russian Fund for Basic Research (grant RFBR No.17-05-00532).

KW - Monte carlo method

UR - https://meetingorganizer.copernicus.org/EGU2019/EGU2019-3512.pdf

M3 - Meeting Abstract

VL - 21

SP - 3512

JO - Geophysical Research Abstracts

JF - Geophysical Research Abstracts

ER -