GROUND LEVEL CHEMICAL ANALYSIS OF AIR TRANSPORTED FROM THE 1998 MEXICAN-CENTRAL AMERICAN FIRES TO THE SOUTHWESTERN USA
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2009
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| author | Ignacio VILLANUEVA-FIERRO |
| author_facet | Ignacio VILLANUEVA-FIERRO |
| contents | GROUND LEVEL CHEMICAL ANALYSIS OF AIR TRANSPORTED FROM THE 1998 MEXICAN-CENTRAL AMERICAN FIRES TO THE SOUTHWESTERN USA Ignacio VILLANUEVA-FIERRO Carl J. POPP Roy W. DIXON Randal S. MARTIN Jeffrey S. GAFFNEY Nancy A. MARLEY Joyce M. HARRIS Ciencias de la Tierra fires Biomass transport air quality stratosphere In May 1998, a large number of forest fires in the region of southern México and Central America, released huge amounts of contaminants that were transported over the Pacific Ocean, then, due to a change in air current direction, the primary contaminants and their secondary pollutant products impacted central New Mexico after 5 to 6 days transport time. The total distance traveled was approximately 3000 km from the fire source. Background measurements of a number of key chemical markers were taken before and during the haze incursion at a site located at Socorro, NM. A number of days before the haze episode in NM, large areas of Texas, Louisiana and the lower Mississippi River valley were also inundated by smoke from the fires. The sum of carbonyl compounds was 5.6 ppbv before and 15.5 ppbv during the smoke event; the sum of carboxylic acids went from 7.2 ppbv to 8.6 ppbv; C1-C2 hydrocarbons went from 270 ppbv to 133 ppbv; particulate NO3- went from 0.1 to 1.3 ¿g/m3; SO4-2 went from 1.2 to 3.4 ¿g/m3; and PM10 concentrations remained between the range measured before the episode (15-20 ¿g/m3). The results indicate the significant impact on a rural site from long range transport of primary and secondary smoke pollutants from biomass burning events and the importance of these species being primarily in the gaseous and fine aerosol size range. These fine aerosols are important as climate forcing agents and in reducing air quality and visibility. 2009 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37012008003 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.1 Vol.25 |
| format | Artículo científico |
| id | redalyc_37012008003 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | GROUND LEVEL CHEMICAL ANALYSIS OF AIR TRANSPORTED FROM THE 1998 MEXICAN-CENTRAL AMERICAN FIRES TO THE SOUTHWESTERN USA Ignacio VILLANUEVA-FIERRO Ciencias de la Tierra fires Biomass transport air quality stratosphere GROUND LEVEL CHEMICAL ANALYSIS OF AIR TRANSPORTED FROM THE 1998 MEXICAN-CENTRAL AMERICAN FIRES TO THE SOUTHWESTERN USA Ignacio VILLANUEVA-FIERRO Carl J. POPP Roy W. DIXON Randal S. MARTIN Jeffrey S. GAFFNEY Nancy A. MARLEY Joyce M. HARRIS Ciencias de la Tierra fires Biomass transport air quality stratosphere In May 1998, a large number of forest fires in the region of southern México and Central America, released huge amounts of contaminants that were transported over the Pacific Ocean, then, due to a change in air current direction, the primary contaminants and their secondary pollutant products impacted central New Mexico after 5 to 6 days transport time. The total distance traveled was approximately 3000 km from the fire source. Background measurements of a number of key chemical markers were taken before and during the haze incursion at a site located at Socorro, NM. A number of days before the haze episode in NM, large areas of Texas, Louisiana and the lower Mississippi River valley were also inundated by smoke from the fires. The sum of carbonyl compounds was 5.6 ppbv before and 15.5 ppbv during the smoke event; the sum of carboxylic acids went from 7.2 ppbv to 8.6 ppbv; C1-C2 hydrocarbons went from 270 ppbv to 133 ppbv; particulate NO3- went from 0.1 to 1.3 ¿g/m3; SO4-2 went from 1.2 to 3.4 ¿g/m3; and PM10 concentrations remained between the range measured before the episode (15-20 ¿g/m3). The results indicate the significant impact on a rural site from long range transport of primary and secondary smoke pollutants from biomass burning events and the importance of these species being primarily in the gaseous and fine aerosol size range. These fine aerosols are important as climate forcing agents and in reducing air quality and visibility. 2009 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37012008003 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.1 Vol.25 |
| title | GROUND LEVEL CHEMICAL ANALYSIS OF AIR TRANSPORTED FROM THE 1998 MEXICAN-CENTRAL AMERICAN FIRES TO THE SOUTHWESTERN USA |
| topic | Ciencias de la Tierra fires Biomass transport air quality stratosphere |
| url | https://www.redalyc.org/articulo.oa?id=37012008003 |