Impact of urban and industrial emissions on mesoscale precipitation quality
Results from an acid rain field study around the city of Philadelphia are presented. The study involved the sampling of wet deposition at a network of 40 sites within a distance of 60 km from the Delaware River. Emphasis was placed on event-type rain sampling of frontal and primarily nonconvective storms which are responsible for most of the Northeast's wet deposition. For most storms, meteorological conditions contributed to a predominant southeasterly transport. Local emissions appear to impact the deposition of nitrate (NO/sub 3//sup -/ which may register increases greater than 200%. It appears that this impact grows with distance from the river suggesting peaks beyond the 60 km boundary of the network. Comparisons with estimates of NO/sub x/ emissions reveal that a substantial fraction may be deposited as NO/sub 3//sup -/ on the mesoscale. The impact of local emissions on total sulfur is less striking; for some storms the sulfur excess is only in the form of dissolved SO/sub 2/.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5027627
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Vol. 35:7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mesoscale wetfall chemistry around philadelphia during frontal storms
An ozone episode in the Philadelphia metropolitan area
Related Subjects
ACID RAIN
LONG-RANGE TRANSPORT
POLLUTION SOURCES
ATMOSPHERIC PRECIPITATIONS
NITRATES
NITROGEN OXIDES
PENNSYLVANIA
SAMPLING
SULFUR DIOXIDE
TRAJECTORIES
URBAN AREAS
WASHOUT
CHALCOGENIDES
ENVIRONMENTAL TRANSPORT
FEDERAL REGION III
MASS TRANSFER
NITROGEN COMPOUNDS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION SCAVENGING
RAIN
SEPARATION PROCESSES
SULFUR COMPOUNDS
SULFUR OXIDES
USA
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)