New York city intensive field campaigns: Summer/winter contrasts

James J. Schwab, Olga Hogrefe, Qi Zhang, Yongquan Li, Min Suk Bae, Mingyu Tang, G. Garland Lala, Kenneth L. Demerjian, Henry D. Felton, Oliver V. Rattigan, Brian Frank, Thomas Lanni, Jian Hou, Xianliang Zhou, Xinrong Ren, William H. Brune, Kevin Rhoads, Douglas Orsini, Silke Weimer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The PMTACS-NY EPA Supersite project generated a wealth of data that continues to be utilized to 1) better understand aerosol distributions and composition; 2) identify aerosol production processes and emission sources; 3) evaluate and provide technology transfer for aerosol measurement methods and instrumentation; and 4) provide critical data and analysis for health effects researchers and policymakers. This study has focused narrowly on some of the winter/summer contrasts observed during two intensive field campaigns at Queens College, New York City. Important findings related to this topic include: Largest changes in chemical composition for winter versus summer were observed for nitrate (17%/5%), particle bound water (2%/7%), and chloride (1.8%/0.1%). Particle sizes measured by the SMPS and the AMS were shifted to significantly smaller sizes in the winter, with mean mode mass sizes ranging from 350-400 nm in summer and 150-200 nm in winter. Summer organic aerosol mass concentrations averaged nearly three quarters OOA and one quarter HOA, while winter organics were nearly half and half OOA and HOA. Empirical estimates of SOA production at the QC site based on measured VOC aerosol precursors and OH radical concentrations indicate summertime production rates roughly four times greater than during the winter.

Original languageEnglish (US)
Title of host publicationAir and Waste Management Association - Symposium on Air Quality Measurement Methods and Technology 2007
Pages127-135
Number of pages9
StatePublished - Dec 1 2007
EventSymposium on Air Quality Measurement Methods and Technology 2007 - San Francisco, CA, United States
Duration: Apr 30 2007May 3 2007

Publication series

NameAir and Waste Management Association - Symposium on Air Quality Measurement Methods and Technology 2007
Volume165 CP

Other

OtherSymposium on Air Quality Measurement Methods and Technology 2007
CountryUnited States
CitySan Francisco, CA
Period4/30/075/3/07

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Management, Monitoring, Policy and Law
  • Pollution

Fingerprint Dive into the research topics of 'New York city intensive field campaigns: Summer/winter contrasts'. Together they form a unique fingerprint.

Cite this