Verification of NOx emission inventory over South Korea using sectoral activity data and satellite observation of NO2 vertical column densities

Kim, Na Kyung; Kim, Yong Pyo; Morino, Yu; Kurokawa, Junichi; Ohara, Toshimasa

doi:10.1016/j.atmosenv.2013.05.042

Cited by 31 publications

(16 citation statements)

References 34 publications

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“…All of the sites located within or downwind of major cities have production of NO x mainly from transportation and power generation as its major sources. The ratio of transportation NO x production is a factor of 3 larger compared to all other sources (Kim et al, 2013). Of these sites, the Anmyeondo PSI frequently (40 %) retrieves values of C(NO 2 ) that are close to the typical stratospheric values of 0.1 ± 0.05 DU.…”

mentioning

confidence: 84%

NO<sub>2</sub> and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

et al. 2018

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Abstract. Nine Pandora spectrometer instruments (PSI) were installed at eight sites in South Korea as part of the KORUS-AQ (Korea U.S.-Air Quality) field study integrating information from ground, aircraft, and satellite measurements for validation of remote sensing air-quality studies. The PSI made direct-sun measurements of total vertical column NO 2 , C(NO 2 ), with high precision (0.05 DU, where 1 DU = 2.69 × 10 16 molecules cm −2 ) and accuracy (0.1 DU) that were retrieved using spectral fitting techniques. Retrieval of formaldehyde C(HCHO) total column amounts were also obtained at five sites using the recently improved PSI optics. The C(HCHO) retrievals have high precision, but possibly lower accuracy than for NO 2 because of uncertainty about the optimum spectral window for all ground-based and satellite instruments. PSI direct-sun retrieved values for C(NO 2 ) and C(HCHO) are always significantly larger than OMI (AURA satellite Ozone Monitoring Instrument) retrieved C(NO 2 ) and C(HCHO) for the OMI overpass local times (KST = 13.5 ± 0.5 h). In urban areas, PSI C(NO 2 ) 30-day running averages are at least a factor of two larger than OMI averages. Similar differences are seen for C(HCHO) in Seoul and nearby surrounding areas. Late afternoon values of C(HCHO) measured by PSI are even larger, implying that OMI early afternoon measurements underestimate the effect of poor air quality on human health. The primary cause of OMI underestimates is the large OMI field of view (FOV) that includes regions containing low values of pollutants. In relatively clean areas, PSI and OMI are more closely in agreement. C(HCHO) amounts were obtained for five sites,

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confidence: 84%

NO<sub>2</sub> and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

et al. 2018

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“…(2012)), economic growth rate, and the total primary energy consumption of North Korea (Korean Statistical Information Service, 2011). 196519701975198019851990199119921993199419951996199719981999 Contrastingly, in South Korea, the transportation sector has been the biggest source of NO x emissions, and its contribution to the total NO x emission is increasing (Kim N.K. et al, 2013).…”

Section: Sectoral No X Emission Trendsmentioning

confidence: 97%

Verification of NOx emission inventories over North Korea

Kim

Morino

et al. 2014

Environmental Pollution

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“…These techniques have a detection limit of approximately 1 ppb. The objective of the NAQMN policy is to reduce the total anthropogenic NO emissions in Seoul by 53% from 2001 (309,387 ton yr −1 ) to 2014 (145,412 ton yr −1 ) [34]. Hence, human activities that can contribute to the formation and distribution patterns of NO, NO 2 and O 3 have been routinely monitored.…”

Section: Experimental Methodsmentioning

confidence: 99%

Short and Long-Term Temporal Changes in Air Quality in a Seoul Urban Area: The Weekday/Sunday Effect

et al. 2018

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We present evidence on the short-term differences in airborne pollution levels in terms of weekday/weekend (WD/WN) and weekday/Sunday (WD/Sun) intervals. To this end, we analyzed the hourly data of important pollutants (nitric oxide (NO), nitrogen dioxide (NO 2 ), ozone (O 3 ) and carbon monoxide (CO)) using the data acquired in the Yong-San district of Seoul, Korea from 2009 to 2013. For each week, the pollutant ratio (R w ) was estimated through either WD/WN or WD/Sun. Here, a week is defined as Sunday through Saturday, WD as Monday through Friday and WN as Sunday and Saturday. The WD/Sun R w geometric means (and range) were 2.02 (0.27-15.5) for NO, 1.29 (0.49-5.7) for NO 2 and 0.89 (0.17-7.2) for O 3 while the fraction of R w (WD/Sun) > 1 were 81, 71 and 38%, respectively. NO and CO levels were much higher in October through March (during Autumn and Winter) than April through September (during Spring and Summer), reflecting the potential effect of fuel consumption (e.g., in terms of use patterns of nationwide city natural gas). Thus, we provide a broader interpretation on the occurrence patterns of the major pollutants (e.g., NO, NO 2 , O 3 and CO) in relation to temporal changes in man-made activities.

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Verification of NOx emission inventory over South Korea using sectoral activity data and satellite observation of NO2 vertical column densities

Cited by 31 publications

References 34 publications

NO<sub>2</sub> and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

NO<sub>2</sub> and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

Verification of NOx emission inventories over North Korea

Short and Long-Term Temporal Changes in Air Quality in a Seoul Urban Area: The Weekday/Sunday Effect

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Verification of NOx emission inventory over South Korea using sectoral activity data and satellite observation of NO2 vertical column densities

Cited by 31 publications

References 34 publications

NO&lt;sub&gt;2&lt;/sub&gt; and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

NO&lt;sub&gt;2&lt;/sub&gt; and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

Verification of NOx emission inventories over North Korea

Short and Long-Term Temporal Changes in Air Quality in a Seoul Urban Area: The Weekday/Sunday Effect

Contact Info

Product

Resources

About

NO<sub>2</sub> and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign

NO<sub>2</sub> and HCHO measurements in Korea from 2012 to 2016 from Pandora spectrometer instruments compared with OMI retrievals and with aircraft measurements during the KORUS-AQ campaign