The Effect of Lake Temperatures and Emissions on Ozone Exposure in the Western Great Lakes Region

Journal Article · Mon Sep 01 04:00:00 EDT 2003 · Journal of Applied Meteorology, 42(9):1197-1217

DOI:https://doi.org/10.1175/1520-0450(2003)042<1197:TEOLTA>2.0.CO;2· OSTI ID:15004486

Fast, Jerome D ^[1]; Heilman, Warren E ^[2]

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1. BATTELLE (PACIFIC NW LAB)
2. USDA Forest Service

A meteorological-chemical model with a 12-km horizontal grid spacing was used to simulate the evolution of ozone over the western Great Lakes region during a 30-day period in the summer of 1999. High ozone production rates were produced over the surface of the lakes as a result of stable atmospheric conditions that trapped ozone precursors within a shallow layer during the day. Simulations with lake temperatures derived from either satellite measurements or climatological values produced ozone mixing ratios over the lakes and around the lake shores that differed by as much as 50 ppb while differences over land were usually 10 ppb or less. Through another series of sensitivity studies that varied ozone precursor emissions, it was shown that a reduction of 50% NOx or VOC would lower the 60 ppb ozone exposure by up to 50 h per month in the remote forest regions over the northern Great Lakes. The implications of these results on future climate change and air quality in the region is discussed.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 15004486
• Report Number(s): PNNL-SA-36855; 400401000
• Journal Information: Journal of Applied Meteorology, 42(9):1197-1217, Journal Name: Journal of Applied Meteorology, 42(9):1197-1217 Journal Issue: 9 Vol. 42; ISSN 1520-0450; ISSN 0894-8763
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR QUALITY
CLIMATES
CLIMATIC CHANGE
FORESTS
GREAT LAKES
LAKES
MIXING RATIO
ORGANIC COMPOUNDS
OZONE
PRECURSOR
PRODUCTION
SATELLITES
SENSITIVITY
SHORES
VOLATILE MATTER