Progress%20Report%20to%20MDE

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Diurnal-Seasonal and Longer Time Scale Variation
of Power Plants Emissions at Maryland and other
East Coast States
Partly supported by NASA
Progress Report to MDE October 22, 2009
Dr. Konstantin Vinnikov, Acting State
Climatologist for Maryland Prof. Russell
Dickerson, Department of Atmospheric and Oceanic
Science University of Maryland at College Park,
MD
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• Objectives
• To look at diurnal and seasonal trends in
  emission for atmospheric budget studies
• To help NASA understand what a Geostationary
  Satellite can do that a Polar orbiter cannot.

• Time series of Hourly Emissions of SO2, NOx, CO2,
  Heat, Electricity
• Changes in Seasonal/Diurnal Cycles
• Regional Climatic Forcing
• Used EPA Prepackaged Power Plants Emissions Data
  Setshttp//camddataandmaps.epa.gov/gdm/index.cfm
  ?fuseactionemissions.wizard

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MARYLAND POWER PLANTS EMISSIONS. Workdays -
Weekends
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MARYLAND POWER PLANTS HEAT ELECTRICITY
PRODUCTION
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MARYLAND POWER PLANTS HEAT ELECTRICITY
PRODUCTION
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MARYLAND POWER PLANTS HEAT ELECTRICITY
Workdays - Weekends
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? BAD DATA!
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HEAT EMISSION BY POWER PLANTS CAN BE RESPONSIBLE
FOR REGIONALCLIMATE CHANGE
STATES SUMMER/ AFTERNOON HEAT FORCING W/m2
NY 0.3
NJ 0.7
PA 0.5
OH 1.2
DE 1.4
WV 0.6
MD 0.5
VA 0.2
Climatic Forcing 1 W/m2 ? Global Warming 0.75 ºC
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SCALES OF TEMPORAL AUTOCORRELATION IN SO2
VARIATIONS, HOURS
THREE URBAN STATIONS
THREE RURAL, HIGH ELEVATED MOUNTIAN STATIONS
It is assumed that lag-correlation functions of
observed temporal SO2 variations can be
approximated as R(t) exp(t/T), where t is lag,
and T is decay time. This time is needed for
observed anomaly of SO2 concentration to decrease
e times. For two physical processes with decay
times T1 and T2, resulted decay time TT1T2 /
(T1T2). The resulted T is always smaller than
the smallest of T1 and T2.
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• Conclusions
• Diurnal/Seasonal patterns of MD Power Plants SO2
  and CO2 emissions have not been changing
  significantly during past decade.
• MD Power Plants NOx emissions have been
  decreasing during past decade. Diurnal/Seasonal
  pattern of these emissions has been almost
  inverted.
• OH, WV and PA do not show decreasing of NOX
  emissions outside the ozone season.
• There is a noticeable increase in Power Plants
  emissions on workdays compared to weekends.
• Heat pollution from Power Plants at MD did not
  show increasing tendency.
• Heat emissions by Power Plants at East Coast
  States can affect regional climate.

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