TY - JOUR
T1 - Evaluation of NO2 column variations over the atmosphere of Kazakhstan using satellite data
AU - Darynova, Zhuldyz
AU - Maksot, Aigerim
AU - Kulmukanova, Lyazzat
AU - Malekipirbazari, Milad
AU - Sharifi, Hamed
AU - Torkmahalleh, Mehdi Amouei
AU - Holloway, Tracey
N1 - Funding Information:
The authors of this study would like to acknowledge Nazarbayev University for providing the Faculty Small Grant (No: 090118FD5315) to the authors of this paper (MAT, LK, ZD, and AM) to conduct this study. Participation of TH was supported by the NASA Health and Air Quality Applied Sciences Team. We appreciate the helpful comments of Anastasia Montgomery and Mary Spraggs of the Holloway Group at the University of Wisconsin—Madison. We acknowledge the free use of tropospheric NO2 column data from the OMI sensor from www.temis.nl.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Tropospheric NO2 concentrations obtained from the measurements of the Ozone Monitoring Instrument on board the NASA Aura satellite from 2005 to 2016 were studied to identify major NO2 emission hot spots, trends, and seasonal variations over Kazakhstan. Emission hot spots are observed over the locations of thermal power plants (Ekibastuz) and major urban and industrial regions (Almaty and Shymkent), as well as the capital city (Astana). Some decreasing trends have been observed for NO2 over Ekibastuz, whereas the regions of Almaty and Shymkent showed increasing trends due to industrial growth. The seasonal pattern of the NO2 concentration shows a difference between three industrial cities of Almaty, Shymkent, and Ekibastuz versus the rest of Kazakhstan. In these three cities, a NO2 maximum is found during wintertime, which we attribute to seasonality of emissions associated with electricity production and the longer chemical lifetime of NO2 in winter. In contrast, in Astana and the rest of Kazakhstan, the NO2 concentration reaches a maximum in the summer.
AB - Tropospheric NO2 concentrations obtained from the measurements of the Ozone Monitoring Instrument on board the NASA Aura satellite from 2005 to 2016 were studied to identify major NO2 emission hot spots, trends, and seasonal variations over Kazakhstan. Emission hot spots are observed over the locations of thermal power plants (Ekibastuz) and major urban and industrial regions (Almaty and Shymkent), as well as the capital city (Astana). Some decreasing trends have been observed for NO2 over Ekibastuz, whereas the regions of Almaty and Shymkent showed increasing trends due to industrial growth. The seasonal pattern of the NO2 concentration shows a difference between three industrial cities of Almaty, Shymkent, and Ekibastuz versus the rest of Kazakhstan. In these three cities, a NO2 maximum is found during wintertime, which we attribute to seasonality of emissions associated with electricity production and the longer chemical lifetime of NO2 in winter. In contrast, in Astana and the rest of Kazakhstan, the NO2 concentration reaches a maximum in the summer.
KW - Almaty
KW - Astana
KW - Kazakhstan
KW - NASA Aura Satellite
KW - NO
KW - power plants
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U2 - 10.1117/1.JRS.12.042610
DO - 10.1117/1.JRS.12.042610
M3 - Article
AN - SCOPUS:85055839748
VL - 12
JO - Journal of Applied Remote Sensing
JF - Journal of Applied Remote Sensing
SN - 1931-3195
IS - 4
M1 - 042610
ER -