ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES

The coronavirus disease was discovered in 2019 (COVID-19) and was eventually declared by the World Health Organization (WHO) as a global pandemic on March 11, 2020. This study aims to determine the correlation of Dust Storm Detection (DSD) index from the Fengyun-4A (FY-4A) data, NO<sub>2</s...

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Autores principales:	K. A. Solidum, J. A. Principe, M. R. C. O. Ang
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/083f042d2acb486f9e5b5ac66dd43989
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spelling	oai:doaj.org-article:083f042d2acb486f9e5b5ac66dd439892021-11-19T01:49:08ZESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES10.5194/isprs-archives-XLVI-4-W6-2021-273-20211682-17502194-9034https://doaj.org/article/083f042d2acb486f9e5b5ac66dd439892021-11-01T00:00:00Zhttps://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLVI-4-W6-2021/273/2021/isprs-archives-XLVI-4-W6-2021-273-2021.pdfhttps://doaj.org/toc/1682-1750https://doaj.org/toc/2194-9034The coronavirus disease was discovered in 2019 (COVID-19) and was eventually declared by the World Health Organization (WHO) as a global pandemic on March 11, 2020. This study aims to determine the correlation of Dust Storm Detection (DSD) index from the Fengyun-4A (FY-4A) data, NO<sub>2</sub> ground observations, and daily positivity rate of COVID-19 cases in Metro Manila and predict the confirmed daily cases of COVID-19 using the established correlations. FY-4A DSD products were used to obtain different Dust Storm Indices (DSI) and daily COVID-19 confirmed cases were tallied during the period November 01–30, 2020, and March 01–31, 2021. Ground-observed NO<sub>2</sub> levels from Environmental Management Bureau (EMB) monitoring stations were gathered for validation and regression analysis. Results of linear regression analysis between the DSI and NO<sub>2</sub> exhibited a weak correlation (0.24) with the available observations at the specified period. Ground-observed NO<sub>2</sub> levels exhibit the same trend with the daily positivity rate of COVID-19 considering only a smaller area and short period of observations. Moreover, results showed a weak correlation (0.07) between the positivity rate of COVID-19 case as a function of the DSD Index and ground-observed NO<sub>2</sub> levels. Uncertainty of results from this study may be attributed to the fact that it has focused on a relatively small area due to limited available ground observations. Therefore, it is recommended to apply the same analysis on different periods of observations using as many NO<sub>2</sub> level ground observations as available and determine if variables follow the same trend and correlations as reported in this study.K. A. SolidumJ. A. PrincipeM. R. C. O. AngCopernicus PublicationsarticleTechnologyTEngineering (General). Civil engineering (General)TA1-2040Applied optics. PhotonicsTA1501-1820ENThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVI-4-W6-2021, Pp 273-279 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820
spellingShingle	Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 K. A. Solidum J. A. Principe M. R. C. O. Ang ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES
description	The coronavirus disease was discovered in 2019 (COVID-19) and was eventually declared by the World Health Organization (WHO) as a global pandemic on March 11, 2020. This study aims to determine the correlation of Dust Storm Detection (DSD) index from the Fengyun-4A (FY-4A) data, NO<sub>2</sub> ground observations, and daily positivity rate of COVID-19 cases in Metro Manila and predict the confirmed daily cases of COVID-19 using the established correlations. FY-4A DSD products were used to obtain different Dust Storm Indices (DSI) and daily COVID-19 confirmed cases were tallied during the period November 01–30, 2020, and March 01–31, 2021. Ground-observed NO<sub>2</sub> levels from Environmental Management Bureau (EMB) monitoring stations were gathered for validation and regression analysis. Results of linear regression analysis between the DSI and NO<sub>2</sub> exhibited a weak correlation (0.24) with the available observations at the specified period. Ground-observed NO<sub>2</sub> levels exhibit the same trend with the daily positivity rate of COVID-19 considering only a smaller area and short period of observations. Moreover, results showed a weak correlation (0.07) between the positivity rate of COVID-19 case as a function of the DSD Index and ground-observed NO<sub>2</sub> levels. Uncertainty of results from this study may be attributed to the fact that it has focused on a relatively small area due to limited available ground observations. Therefore, it is recommended to apply the same analysis on different periods of observations using as many NO<sub>2</sub> level ground observations as available and determine if variables follow the same trend and correlations as reported in this study.
format	article
author	K. A. Solidum J. A. Principe M. R. C. O. Ang
author_facet	K. A. Solidum J. A. Principe M. R. C. O. Ang
author_sort	K. A. Solidum
title	ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES
title_short	ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES
title_full	ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES
title_fullStr	ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES
title_full_unstemmed	ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES
title_sort	estimation of nitrogen dioxide (no<sub>2</sub>) concentration using fengyun-4a dust storm detection (fy-4a dsd) product during the covid-19 lockdown in metro manila, philippines
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/083f042d2acb486f9e5b5ac66dd43989
work_keys_str_mv	AT kasolidum estimationofnitrogendioxidenosub2subconcentrationusingfengyun4aduststormdetectionfy4adsdproductduringthecovid19lockdowninmetromanilaphilippines AT japrincipe estimationofnitrogendioxidenosub2subconcentrationusingfengyun4aduststormdetectionfy4adsdproductduringthecovid19lockdowninmetromanilaphilippines AT mrcoang estimationofnitrogendioxidenosub2subconcentrationusingfengyun4aduststormdetectionfy4adsdproductduringthecovid19lockdowninmetromanilaphilippines
_version_	1718420591517630464

ESTIMATION OF NITROGEN DIOXIDE (NO<sub>2</sub>) CONCENTRATION USING FENGYUN-4A DUST STORM DETECTION (FY-4A DSD) PRODUCT DURING THE COVID-19 LOCKDOWN IN METRO MANILA, PHILIPPINES

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