Search Results - "Clements, Andrea L."

Low-Cost Air Quality Monitoring Tools: From Research to Practice (A Workshop Summary) by Clements, Andrea L, Griswold, William G, Rs, Abhijit, Johnston, Jill E, Herting, Megan M, Thorson, Jacob, Collier-Oxandale, Ashley, Hannigan, Michael

“…In May 2017, a two-day workshop was held in Los Angeles (California, U.S.A.) to gather practitioners who work with low-cost sensors used to make air quality…”
Get full text

Correction and Accuracy of PurpleAir PM2.5 Measurements for Extreme Wildfire Smoke by Barkjohn, Karoline K., Holder, Amara L., Frederick, Samuel G., Clements, Andrea L.

“…PurpleAir particulate matter (PM) sensors are increasingly used in the United States and other countries for real-time air quality information, particularly…”
Get full text

Saccharide composition in atmospheric particulate matter in the southwest US and estimates of source contributions by Jia, Yuling, Clements, Andrea L., Fraser, Matthew P.

“…Saccharide compositions were measured in ambient particulate matter (PM) samples collected at four sites in Eastern Texas and Central Arizona in an effort to…”
Get full text

Development and application of a United States-wide correction for PM2.5 data collected with the PurpleAir sensor by Barkjohn, Karoline K, Gantt, Brett, Clements, Andrea L

“…PurpleAir sensors, which measure particulate matter (PM), are widely used by individuals, community groups, and other organizations including state and local…”
Get full text

Detection and quantification of 2-methyltetrols in ambient aerosol in the southeastern United States by Clements, Andrea L., Seinfeld, John H.

“…Filters collected from the Southeastern Aerosol Research and Characterization (SEARCH) air monitoring network were analyzed for the presence of…”
Get full text

Source identification of coarse particles in the Desert Southwest, USA using Positive Matrix Factorization by Clements, Andrea L., Fraser, Matthew P., Upadhyay, Nabin, Herckes, Pierre, Sundblom, Michael, Lantz, Jeffrey, Solomon, Paul A.

“…The Desert Southwest Coarse Particulate Matter Study was undertaken to further our understanding of the spatial and temporal variability and sources of fine…”
Get full text

Interpreting Mobile and Handheld Air Sensor Readings in Relation to Air Quality Standards and Health Effect Reference Values: Tackling the Challenges by Woodall, George M, Hoover, Mark D, Williams, Ronald, Benedict, Kristen, Harper, Martin, Soo, Jhy-Charm, Jarabek, Annie M, Stewart, Michael J, Brown, James S, Hulla, Janis E, Caudill, Motria, Clements, Andrea L, Kaufman, Amanda, Parker, Alison J, Keating, Martha, Balshaw, David, Garrahan, Kevin, Burton, Laureen, Batka, Sheila, Limaye, Vijay S, Hakkinen, Pertti J, Thompson, Bob

“…The US Environmental Protection Agency (EPA) and other federal agencies face a number of challenges in interpreting and reconciling short-duration (seconds to…”
Get full text

Observed data quality concerns involving low-cost air sensors by Clements, Andrea L., Reece, Stephen, Conner, Teri, Williams, Ron

“…•Examples of significant variability in collocated low cost replicate sensor response were shown for a PM and tVOC device.•Environmental factors such as RH and…”
Get full text

Role of particulate metals in heterogenous secondary sulfate formation by Clements, Andrea L., Buzcu-Guven, Birnur, Fraser, Matthew P., Kulkarni, Pranav, Chellam, Shankararaman

“…A series of field sampling and controlled laboratory experiments were undertaken to quantify the role of trace metals found in ambient fine particulate matter…”
Get full text

Air Toxics and Other Volatile Organic Compound Emissions from Unconventional Oil and Gas Development by Hecobian, Arsineh, Clements, Andrea L, Shonkwiler, Kira B, Zhou, Yong, MacDonald, Landan P, Hilliard, Noel, Wells, Bradley L, Bibeau, Bryan, Ham, Jay M, Pierce, Jeffrey R, Collett, Jeffrey L

“…Unconventional oil and natural gas (UONG) exploration and production have grown rapidly and are expected to increase further in the United States and…”
Get full text

Fogs and Air Quality on the Southern California Coast by Boris, Alexandra J., Napolitano, Denise C., Herckes, Pierre, Clements, Andrea L., Collett, Jr, Jeffrey L.

“…Fog acts as a reservoir and transport vector for chemicals in the atmosphere, altering the distribution of species between the gas and particle phases, and…”
Get full text

Air pollutant concentrations near three Texas roadways, part II: Chemical characterization and transformation of pollutants by Clements, Andrea L., Jia, Yuling, Denbleyker, Allison, McDonald-Buller, Elena, Fraser, Matthew P., Allen, David T., Collins, Donald R., Michel, Edward, Pudota, Jayanth, Sullivan, David, Zhu, Yifang

“…Spatial gradients of vehicular emitted air pollutants were measured in the vicinity of three roadways in the Austin, Texas area: (1) State Highway 71 (SH-71),…”
Get full text

Size-Differentiated Chemical Composition of Re-Suspended Soil Dust from the Desert Southwest United States by Upadhyay, Nabin, Clements, Andrea L., Fraser, Matthew P., Sundblom, Michael, Solomon, Paul, Herckes, Pierre

Get full text

Characterization of summertime coarse particulate matter in the Desert Southwest-Arizona, USA by Clements, Andrea L., Fraser, Matthew P., Upadhyay, Nabin, Herckes, Pierre, Sundblom, Michael, Lantz, Jeffrey, Solomon, Paul A.

“…A year-long study was conducted in Pinal County, AZ, to characterize coarse (2.5 - 10 μm aerodynamic diameter, AD) and fine (< 2.5 μm AD) particulate matter…”
Get full text

Chemical characterization of coarse particulate matter in the Desert Southwest – Pinal County Arizona, USA by Clements, Andrea L., Fraser, Matthew P., Upadhyay, Nabin, Herckes, Pierre, Sundblom, Michael, Lantz, Jeffrey, Solomon, Paul A.

“…The Desert Southwest Coarse Particulate Matter Study was undertaken to further our understanding of ambient concentrations and the composition of fine and…”
Get full text

Chemical mass balance source apportionment of fine and PM10 in the Desert Southwest, USA by Andrea L. Clements, Matthew P. Fraser, Pierre Herckes, Paul A. Solomon

“…The Desert Southwest Coarse Particulate Matter Study was undertaken in Pinal County, Arizona, to better understand the origin and impact of sources of fine and…”
Get full text

Correction and Accuracy of PurpleAir PM[sub.2.5] Measurements for Extreme Wildfire Smoke by Barkjohn, Karoline K, Holder, Amara L, Frederick, Samuel G, Clements, Andrea L

“…PurpleAir particulate matter (PM) sensors are increasingly used in the United States and other countries for real-time air quality information, particularly…”
Get full text

Development and application of a United States-wide correction for PM 2.5 data collected with the PurpleAir sensor by Barkjohn, Karoline K., Gantt, Brett, Clements, Andrea L.

“…PurpleAir sensors, which measure particulate matter (PM), are widely used by individuals, community groups, and other organizations including state and local…”
Get full text

Development and application of a United States-wide correction for PM.sub.2.5 data collected with the PurpleAir sensor by Barkjohn, Karoline K, Gantt, Brett, Clements, Andrea L

“…PurpleAir sensors, which measure particulate matter (PM), are widely used by individuals, community groups, and other organizations including state and local…”
Get full text

Correction and Accuracy of PurpleAir PM 2.5 Measurements for Extreme Wildfire Smoke by Barkjohn, Karoline K, Holder, Amara L, Frederick, Samuel G, Clements, Andrea L

“…PurpleAir particulate matter (PM) sensors are increasingly used in the United States and other countries for real-time air quality information, particularly…”
Get full text