Diurnal variations of biogenic volatile organic compounds and their role in secondary pollutant formation in the Huai Hong Khrai subtropical forest, Thailand.

Understanding the emissions and atmospheric impact of biogenic volatile organic compounds (BVOCs) in subtropical forests remains limited despite their role in secondary pollutant formation. This study presents the first comprehensive BVOC dataset from the Huai Hong Khrai subtropical forest, Northern Thailand, during the dry season (March 4-9, 2024). Using thermal desorption gas chromatography-mass spectrometry (TD-GC-MS), we identified 45 BVOCs, dominated by monoterpenes, sesquiterpenes, and oxygenated derivatives.