title: Factors influencing surface CO2 variations in LPRU, Thailand and IESM, Philippines.
abstract: Surface carbon dioxide concentrations were measured using a non-dispersive infrared carbon dioxide sensor at Lampang Rajabhat University from April to May 2013 and at the University of the Philippines-Diliman campus starting September 2013. Factors influencing the variations in these measurements were determined using multiple linear regression and a Lagrangian transport model. Air temperature and sea level pressure were the dominant meteorological factors that affect the CO2 variations. However, these factors are not enough. Surface CO2 flux and transboundary transport needs to be considered as well.
authors: Institute of Environmental Science and Meteorology, University of the Philippines, Diliman, Quezon City, Philippines; Natural Sciences Research Institute, University of the Philippines, Diliman, Quezon City, Philippines. Electronic address: ronmcdo@gmail.com.
authors: Ronald
authors: R
authors: Macatangay
authors: Science Faculty, Lampang Rajabhat University, Lampang, Thailand.
authors: Thiranan
authors: T
authors: Sonkaew
authors: Centre for Atmospheric Chemistry, University of Wollongong, Australia.
authors: Voltaire
authors: V
authors: Velazco
authors: Max Planck Institute for Biogeochemistry, Hans-Knöll-Str.10, 07745 Jena, Germany.
authors: Christoph
authors: C
authors: Gerbig
authors: Science Faculty, Lampang Rajabhat University, Lampang, Thailand.
authors: Nilubol
authors: N
authors: Intarat
authors: Science Faculty, Lampang Rajabhat University, Lampang, Thailand.
authors: Nittaya
authors: N
authors: Nantajai
authors: Institute of Environmental Science and Meteorology, University of the Philippines, Diliman, Quezon City, Philippines; Natural Sciences Research Institute, University of the Philippines, Diliman, Quezon City, Philippines.
authors: Gerry
authors: G
authors: Bagtasa
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001272:Atmosphere / Q000737:chemistry; D002245:Carbon Dioxide / Q000032:analysis*; D004784:Environmental Monitoring; D008685:Meteorological Concepts; D009792:Oceans and Seas; D010679:Philippines; D013696:Temperature; D013785:Thailand
chemical_list: D000393:Air Pollutants; D002245:Carbon Dioxide
keywords: Backtrajectory; Carbon dioxide; Footprints; Lagrangian transport model; Multiple linear regression; Non-dispersive infrared; Regression coefficients