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Particulate Matter Contributions from Agricultural Tilling Operations in an Irrigated Desert Region.

Qi M, Lin K, Li X, Sammis TW, Miller DR, Wang J - PLoS ONE (2015)

Bottom Line: Hourly data from three air quality monitoring stations positioned at a 2-m height located on the west and east mesas of New Mexico's Mesilla Valley and in the valley at Anthony, NM were acquired from the New Mexico Air Quality Bureau.The study spanned the agricultural tilling season, March 1 to April 30, for the years 2008 to 2012.One- second spatial PM10 concentrations at 200 m above the valley floor were measured during a two-hour controlled field tilling operation on April 1, 2008.

View Article: PubMed Central - PubMed

Affiliation: School of Science, Wuhan University of Technology, Wuhan, Hubei, P. R. China.

ABSTRACT
Sources of regional particulate matter (PM), particularly agricultural operations, must be understood in order to manage the air quality in irrigated dry climates. Direct monitoring measurements alone are useful, but not sufficient, to estimate regional PM source concentrations. This paper combines modeling with ground (point) and airplane (spatial) measurement methods to estimate regional PM10 (PM diameter≤10 μm) contributions from agricultural operations. Hourly data from three air quality monitoring stations positioned at a 2-m height located on the west and east mesas of New Mexico's Mesilla Valley and in the valley at Anthony, NM were acquired from the New Mexico Air Quality Bureau. The study spanned the agricultural tilling season, March 1 to April 30, for the years 2008 to 2012. One- second spatial PM10 concentrations at 200 m above the valley floor were measured during a two-hour controlled field tilling operation on April 1, 2008. The HYSPLIT 4.0 (Hybrid Single-Particle Lagrangian Integrated Trajectory version 4) model was run at the corresponding times and heights, outputting PM10 concentrations from all potential agricultural tilling operations. The calculated percentage contribution (modeled PM10 concentration/measured PM10 concentration) indicated that the near-surface (2-m height) proportion from the agricultural operations for five seasonal averages ranged from 0.7% to 1.5% on the west and east mesas and 1.3% for the valley site at Anthony. There were 71 hourly high values of contribution ratios ranging from 30 to 100% at the three sites, depending on the wind speed and direction.

No MeSH data available.


Related in: MedlinePlus

Airplane GPS tracks during the regional PM10 experiment on April 1, 2008, at Mesilla Valley, Las Cruces, NM (colored points: 1-s tracks).The labels are the time of the points.
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pone.0138577.g002: Airplane GPS tracks during the regional PM10 experiment on April 1, 2008, at Mesilla Valley, Las Cruces, NM (colored points: 1-s tracks).The labels are the time of the points.

Mentions: Fig 2 shows the map of the experimental area and the airplane (a Cessna) tracks recorded by a GPS. The figure shows the airplane locations at 1-s intervals recorded by a GPS sensor (010-00321-00 GPS 18 Deluxe USB Sensor for Laptops, Garmin, Olathe, KS). A PC laptop was used to record 1-s position data, including date, time, altitude, and location as longitude and latitude. The horizontal and vertical accuracy of the GPS unit was <15 m.


Particulate Matter Contributions from Agricultural Tilling Operations in an Irrigated Desert Region.

Qi M, Lin K, Li X, Sammis TW, Miller DR, Wang J - PLoS ONE (2015)

Airplane GPS tracks during the regional PM10 experiment on April 1, 2008, at Mesilla Valley, Las Cruces, NM (colored points: 1-s tracks).The labels are the time of the points.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4589322&req=5

pone.0138577.g002: Airplane GPS tracks during the regional PM10 experiment on April 1, 2008, at Mesilla Valley, Las Cruces, NM (colored points: 1-s tracks).The labels are the time of the points.
Mentions: Fig 2 shows the map of the experimental area and the airplane (a Cessna) tracks recorded by a GPS. The figure shows the airplane locations at 1-s intervals recorded by a GPS sensor (010-00321-00 GPS 18 Deluxe USB Sensor for Laptops, Garmin, Olathe, KS). A PC laptop was used to record 1-s position data, including date, time, altitude, and location as longitude and latitude. The horizontal and vertical accuracy of the GPS unit was <15 m.

Bottom Line: Hourly data from three air quality monitoring stations positioned at a 2-m height located on the west and east mesas of New Mexico's Mesilla Valley and in the valley at Anthony, NM were acquired from the New Mexico Air Quality Bureau.The study spanned the agricultural tilling season, March 1 to April 30, for the years 2008 to 2012.One- second spatial PM10 concentrations at 200 m above the valley floor were measured during a two-hour controlled field tilling operation on April 1, 2008.

View Article: PubMed Central - PubMed

Affiliation: School of Science, Wuhan University of Technology, Wuhan, Hubei, P. R. China.

ABSTRACT
Sources of regional particulate matter (PM), particularly agricultural operations, must be understood in order to manage the air quality in irrigated dry climates. Direct monitoring measurements alone are useful, but not sufficient, to estimate regional PM source concentrations. This paper combines modeling with ground (point) and airplane (spatial) measurement methods to estimate regional PM10 (PM diameter≤10 μm) contributions from agricultural operations. Hourly data from three air quality monitoring stations positioned at a 2-m height located on the west and east mesas of New Mexico's Mesilla Valley and in the valley at Anthony, NM were acquired from the New Mexico Air Quality Bureau. The study spanned the agricultural tilling season, March 1 to April 30, for the years 2008 to 2012. One- second spatial PM10 concentrations at 200 m above the valley floor were measured during a two-hour controlled field tilling operation on April 1, 2008. The HYSPLIT 4.0 (Hybrid Single-Particle Lagrangian Integrated Trajectory version 4) model was run at the corresponding times and heights, outputting PM10 concentrations from all potential agricultural tilling operations. The calculated percentage contribution (modeled PM10 concentration/measured PM10 concentration) indicated that the near-surface (2-m height) proportion from the agricultural operations for five seasonal averages ranged from 0.7% to 1.5% on the west and east mesas and 1.3% for the valley site at Anthony. There were 71 hourly high values of contribution ratios ranging from 30 to 100% at the three sites, depending on the wind speed and direction.

No MeSH data available.


Related in: MedlinePlus