Aerosol physical,chemical and optical properties during the Rocky Mountain Airborne Nitrogen and Sulfur study |
| |
| Authors: | EJT Levin SM Kreidenweis GR McMeeking CM Carrico JL Collett WC Malm |
| |
| Institution: | 1. Department of Atmospheric Science, Colorado State University, 1371 Campus Delivery, Fort Collins, CO 80523-1371, USA;2. National Park Service/Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523-1375, USA;1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multidiscipline Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;2. Guizhou Academy of Environmental Science and Designing, Guiyang 550081, China;3. Guizhou Normal University, Guiyang 550001, China;4. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China;1. The Netherlands Organization for Applied Scientific Research, TNO, P.O. Box 96864, 2509 JG The Hague, The Netherlands;2. The Institute of Oceanology, Polish Academy of Sciences, 81-712 Sopot, P.O. Box 68, Poland;3. Toulon-Var University, CNRS/INSU, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 83957 La Garde, France;4. Aix Marseille University, CNRS/INSU, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France;5. LUNAM Université, Ecole Centrale de Nantes, LHEEA UMR CNRS, 6598 Nantes, France;1. Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, USA;2. Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77004, USA;3. Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO 80307, USA |
| |
| Abstract: | During the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study, conducted during the spring and summer of 2006, a suite of instruments located near the eastern boundary of Rocky Mountain National Park (RMNP) measured aerosol physical, chemical and optical properties. Three instruments, a differential mobility particle sizer (DMPS), an optical particle counter (OPC), and an aerodynamic particle sizer (APS), measured aerosol size distributions. Aerosols were sampled by an Interagency Monitoring of Protected Visual Environments (IMPROVE) sampler and a URG denuder/filter-pack system for compositional analysis. An Optec integrating nephelometer measured aerosol light scattering. The spring time period had lower aerosol concentrations, with an average volume concentration of 2.2 ± 2.6 μm3 cm?3 compared to 6.5 ± 3.9 μm3 cm?3 in the summer. During the spring, soil was the single largest constituent of PM2.5 mass, accounting for 32%. During the summer, organic carbon accounted for 60% of the PM2.5 mass. Sulfates and nitrates had higher fractional contributions in the spring than the summer. Variability in aerosol number and volume concentrations and in composition was greater in the spring than in the summer, reflecting differing meteorological conditions. Aerosol scattering coefficients (bsp) measured by the nephelometer compared well with those calculated from Mie theory using size distributions, composition data and modeled RH dependent water contents. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
