5 documents found, page 1 of 1
Spatio-Temporal Variability of Carbon Monoxide Over South America Using Satelli...
dos Santos, Yara Luiza Farias; Souza, Rodrigo Augusto Ferreira de; Souza, Jaidete Monteiro de; Andreoli, Rita Valéria; Kayano, Mary ToshieUsing the information of the Earth Observation System/AQUA (EOS/AQUA) satellite during the 2003-2012 period, the present work investigates the tropospheric carbon monoxide (CO) behavior over the central South American region, and its spatiotemporal variability. The results show a well-defined seasonal behavior of the CO concentration, with decrease during the wet season and increase during dry season, due to th...
Intermediate-scale horizontal isoprene concentrations in the near-canopy forest...
Batista, Carla E.; Ye, Jianhuai; Ribeiro, Igor Oliveira; Guimarães, Patrícia Costa; Medeiros, Adan Sady S.; Barbosa, Rafael G.; Oliveira, Rafael L.The emissions, deposition, and chemistry of volatile organic compounds (VOCs) are thought to be influenced by underlying landscape heterogeneity at intermediate horizontal scales of several hundred meters across different forest subtypes within a tropical forest. Quantitative observations and scientific understanding at these scales, however, remain lacking, in large part due to a historical absence of canopy a...
Vertical profiles of Ozone concentration collected by an Unmanned Aerial Vehicl...
Guimarães, Patrícia Costa; Ye, Jianhuai; Batista, Carla E.; Barbosa, Rafael G.; Ribeiro, Igor Oliveira; Medeiros, Adan Sady S.The nighttime boundary layer was studied in an urban area surrounded by tropical forest by use of a copter-type unmanned aerial vehicle (UAV) in central Amazonia during the wet season. Fifty-seven vertical profiles of ozone concentration, potential temperature, and specific humidity were collected from surface to 500 m above ground level (a.g.l.) at high vertical and temporal resolutions by use of embedded sens...
Power plant fuel switching and air quality in a tropical, forested environment
Medeiros, Adan Sady S.; Calderaro, Gisele; Guimarães, Patrícia Costa; Magalhaes, Mateus R.; Morais, Marcos Vinícius Bueno de; Rafee, Sameh Adib AbouHow a changing energy matrix for electricity production affects air quality is considered for an urban region in a tropical, forested environment. Manaus, the largest city in the central Amazon Basin of Brazil, is in the process of changing its energy matrix for electricity production from fuel oil and diesel to natural gas over an approximately 10-year period, with a minor contribution by hydropower. Three sce...
Urban influence on the concentration and composition of submicron particulate m...
Sá, Suzane S. de; Palm, Brett B.; Campuzano-Jost, Pedro; Day, Douglas A.; Hu, Weiwei; Isaacman-VanWertz, Gabriel A.; Yee, Lindsay D.; Brito, Joel F.An understanding of how anthropogenic emissions affect the concentrations and composition of airborne particulate matter (PM) is fundamental to quantifying the influence of human activities on climate and air quality. The central Amazon Basin, especially around the city of Manaus, Brazil, has experienced rapid changes in the past decades due to ongoing urbanization. Herein, changes in the concentration and comp...