東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Diurnal Variation of Aerosol Optical...

Lennartson, Elizabeth Marie.

Linked to FindBook

Google Book

Amazon

博客來

Diurnal Variation of Aerosol Optical Depth and PM2.5 in South Korea: A Synthesis from AERONET, Satellite (GOCI), KORUS-AQ Observation, and WRF-Chem Model.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Diurnal Variation of Aerosol Optical Depth and PM2.5 in South Korea: A Synthesis from AERONET, Satellite (GOCI), KORUS-AQ Observation, and WRF-Chem Model./
Author:	Lennartson, Elizabeth Marie.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
Description:	55 p.
Notes:	Source: Masters Abstracts International, Volume: 80-01.
Contained By:	Masters Abstracts International80-01.
Subject:	Atmospheric Chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10752197
ISBN:	9780438153004

Diurnal Variation of Aerosol Optical Depth and PM2.5 in South Korea: A Synthesis from AERONET, Satellite (GOCI), KORUS-AQ Observation, and WRF-Chem Model.
Lennartson, Elizabeth Marie.

Diurnal Variation of Aerosol Optical Depth and PM2.5 in South Korea: A Synthesis from AERONET, Satellite (GOCI), KORUS-AQ Observation, and WRF-Chem Model. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 55 p.

Source: Masters Abstracts International, Volume: 80-01.

Thesis (M.S.)--The University of Iowa, 2018.

This item is not available from ProQuest Dissertations & Theses.

Spatial distribution of diurnal variations of aerosol properties in South Korea, both long term and short term, is studied by using 9 AERONET sites from 1999 to 2017 for long-term averages and from an additional 10 sites during the KORUS-AQ field campaign. The extent to which WRF-Chem model and the GOCI satellite retrieval can describe these variations is also analyzed. In daily average, Aerosol Optical Depth (AOD) at 550 nm is 0.386 and shows a diurnal variation of +20 to -30% in inland sites, respectively larger than the counterparts of 0.308 and ± 20% in coastal sites. Both the inland and coastal sites have their diurnal variation peaks in the early morning and in the evening with noontime and early afternoon valleys. In contrast, Angstrom exponent values in all sites are between 1.2 and 1.4 with the exception of the inland rural sites having smaller values near 1.0 during the early morning hours. All inland sites experience a pronounced increase of Angstrom Exponent from morning to evening, reflecting overall decrease of particle size in daytime. To statistically obtain the climatology of diurnal variation of AOD, a minimum of requirement of ~2 years of observation is needed in coastal rural sites, twice more than the urban sites, which suggests that diurnal variation of AOD in urban setting is distinct and persistent. AERONET, GOCI, WRF-Chem, and observed PM2.5 data consistently show dual peaks for both AOD and PM2.5, one at ~ 10 KST and another ~14 KST. While Korean GOCI satellite is able to consistently capture the diurnal variation of AOD, WRF-Chem clearly has the deficiency to describe the relatively change of peaks and variations between the morning and afternoon, suggesting further studies for the diurnal profile of emissions. Overall, the relative small diurnal variation of PM2.5 is in high contrast with large AOD diurnal variation, which suggests the need to use AOD from geostationary satellites for constrain either modeling or analysis of surface PM2.5 for air quality application.

ISBN: 9780438153004Subjects--Topical Terms:

1669583
Atmospheric Chemistry.

Diurnal Variation of Aerosol Optical Depth and PM2.5 in South Korea: A Synthesis from AERONET, Satellite (GOCI), KORUS-AQ Observation, and WRF-Chem Model.
LDR:03230nmm a2200337 4500 001 2263792
005 20200331094320.5
008 220629s2018 ||||||||||||||||| ||eng d
020 $a 9780438153004
035 $a (MiAaPQ)AAI10752197
035 $a (MiAaPQ)uiowa:15643
035 $a AAI10752197
040 $a MiAaPQ $c MiAaPQ
100 1 $a Lennartson, Elizabeth Marie. $3 3540882
245 1 0 $a Diurnal Variation of Aerosol Optical Depth and PM2.5 in South Korea: A Synthesis from AERONET, Satellite (GOCI), KORUS-AQ Observation, and WRF-Chem Model.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2018
300 $a 55 p.
500 $a Source: Masters Abstracts International, Volume: 80-01.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Wang, Jun.
502 $a Thesis (M.S.)--The University of Iowa, 2018.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a Spatial distribution of diurnal variations of aerosol properties in South Korea, both long term and short term, is studied by using 9 AERONET sites from 1999 to 2017 for long-term averages and from an additional 10 sites during the KORUS-AQ field campaign. The extent to which WRF-Chem model and the GOCI satellite retrieval can describe these variations is also analyzed. In daily average, Aerosol Optical Depth (AOD) at 550 nm is 0.386 and shows a diurnal variation of +20 to -30% in inland sites, respectively larger than the counterparts of 0.308 and ± 20% in coastal sites. Both the inland and coastal sites have their diurnal variation peaks in the early morning and in the evening with noontime and early afternoon valleys. In contrast, Angstrom exponent values in all sites are between 1.2 and 1.4 with the exception of the inland rural sites having smaller values near 1.0 during the early morning hours. All inland sites experience a pronounced increase of Angstrom Exponent from morning to evening, reflecting overall decrease of particle size in daytime. To statistically obtain the climatology of diurnal variation of AOD, a minimum of requirement of ~2 years of observation is needed in coastal rural sites, twice more than the urban sites, which suggests that diurnal variation of AOD in urban setting is distinct and persistent. AERONET, GOCI, WRF-Chem, and observed PM2.5 data consistently show dual peaks for both AOD and PM2.5, one at ~ 10 KST and another ~14 KST. While Korean GOCI satellite is able to consistently capture the diurnal variation of AOD, WRF-Chem clearly has the deficiency to describe the relatively change of peaks and variations between the morning and afternoon, suggesting further studies for the diurnal profile of emissions. Overall, the relative small diurnal variation of PM2.5 is in high contrast with large AOD diurnal variation, which suggests the need to use AOD from geostationary satellites for constrain either modeling or analysis of surface PM2.5 for air quality application.
590 $a School code: 0096.
650 4 $a Atmospheric Chemistry. $3 1669583
650 4 $a Atmospheric sciences. $3 3168354
690 $a 0371
690 $a 0725
710 2 $a The University of Iowa. $b Chemical & Biochemical Engineering. $3 1675128
773 0 $t Masters Abstracts International $g 80-01.
790 $a 0096
791 $a M.S.
792 $a 2018
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10752197