AI SearchEstimation of high spatial and temporal resolution of pm2.5 concentrations in Chiang Mai using satellite-derived aerosol optical depths and meteorological parameters (Record no. 40245)
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| fixed length control field | 04923nas a2200481 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818112522.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 230404s2022 th u m rtt 000 a eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12403544 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-22-10 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Pyae Phyo Kyaw |
| 245 10 - TITLE STATEMENT | |
| Title | Estimation of high spatial and temporal resolution of pm2.5 concentrations in Chiang Mai using satellite-derived aerosol optical depths and meteorological parameters |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2022 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 51 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-22-10 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Sc.) - Asian Institute of Technology, 2022 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Particulate Matter (PM) is one of the most common pollutants emitted from anthropogenic sources because they can be formed from the numerous types of sources. Chiang Mai faces high level of PM2.5 concentration during dry season of every year. To monitor PM2.5 condition, there are only two air quality monitoring stations in Chiang Mai. Insufficient monitoring stations makes the limitation in air quality management. Nowadays, satellite remote sensing become a tool to monitor air pollutants on the earth surface where there are not enough monitoring stations. Aerosol Optical Depth (AOD) is one of the parameters to show the condition of air quality in the atmosphere. There are many different satellites that provide AOD products with different temporal and spatial resolution. In this study, AOD from MAIAC, having 1x1 km2 spatial resolution and AOD from Himawari-8 satellite having 5x5 km2 spatial resolution, were used to develop hourly 1x1 km2 resolution AOD to estimate PM2.5 concentration in Chiang Mai for the year 2020. These AOD were validated with the ground-based AOD from Chiang Mai AERONET station, and the result showed a correlation coefficient (R 2 ) of 0.63. This hourly high-resolution AOD data was used to estimate PM2.5 concentration by using Multiple Linear Regression with 1- hr average ground-based PM2.5 concentration data from the monitoring stations. The results showed that the R2 was 0.56 for the relationship between AOD and PM2.5 only. The meteorological parameters, i.e., temperature, relative humidity, wind speed, and wind direction were added in the model, and the R 2 was improved to 0.62. Random Forest Regression was also applied to compare the results of correlation, and the R square results were 0.95 in the training set and 0.53 in the testing set. This regression showed the most important variable was aerosol optical depth in estimation of PM2.5. The estimated PM2.5 concentrations were correlated with the observed PM2.5 with an R2 of 0.71. The mean bias was 1.115 and the root mean squared error was 23.28 æg/m3 . The correlation results of different hours from 09:00 to 16:00 hr. varied from 0.55 at 14:00 hr. to 0.81 at 10:00 hr. Finally, the hourly spatial distribution maps of PM2.5 concentration over Chiang Mai were developed with the relationship between hourly 1x1km2 spatial resolution AOD and PM2.5 with meteorological parameters. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Particulate matter |
| General subdivision | Environmental aspects |
| Geographic subdivision | Thailand |
| -- | Chiang Mai |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Air quality |
| Geographic subdivision | Thailand |
| -- | Chiang Mai |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Air quality |
| General subdivision | Remote sensing |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ekbordin Winijkul, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Xue, Wenchao, |
| Relator term | Examination committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Virdis, Salvatore G.P., |
| Relator term | Examination committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Environmental Conservation Department (ECD), Myanmar, |
| Relator term | Scholarship Donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology Scholarships, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-22-10 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B18631">http://203.159.5.9/ait-thesis/detail.php?q=B18631</a> |
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| Cataloger's initials, CIN (RLIN) | 230404 |
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| Koha item type | 67-Electronic Resource |
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| Koha item type | 20-AIT Publication |
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| Barcode | Barcode : - |
| CREATED | CREATED : 2023-03-30 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type | Barcode | Copy number | Cost, normal purchase price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-22-10 | 18/08/2026 | 18/08/2026 | 67-Electronic Resource | |||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-22-10 | 18/08/2026 | 18/08/2026 | 40-Archives | 30050121041163 | 1 | |||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | AIT Thesis no.EV-22-10 | 18/08/2026 | 18/08/2026 | 20-AIT Publication | 30050120913503 | 1 | 50.00 | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | AIT Thesis no.EV-22-10 | 18/08/2026 | 18/08/2026 | 20-AIT Publication | 30050120913511 | 2 | 50.00 |