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Global Simulation of SO2 Concentrations with Updated
Emission Inventory
Gan Luo, Fangqun Yu, Zifa Wang
Atmospheric Science Research Center, SUNY- Albany
Nansen-Zhu International Research Centre
Institute of Atmospheric Physics
Chinese Academy of Science
Introduction
Acidifying Gas Acid Rain
Precursory Atm. Particles
Global Dimming/Brightening?
CCN Cloud Precipitation?
Global Dimming/Brightening?
Fig. 5. Linear and second-order trends for (A) land areas only and (B) for oceans only. [Pinker, Science, 2005]
Fig. 2. the records covering the period 1992 to 2002 (B) clear-sky conditions (24). Units W mj2.[Wild, Science, 2005]
Surface Observations Satellite Observations
Sulfur Emission in GEOS-Chem
Recent Short-term Simulation: GEIA 1985 EDGAR 2000
What should we do if we want to make a long-term simulation?
Corrected Data(EPA, EMEP, TRACE-P)
EDGAR EDGAR 20002000
1985 Base Data
(Benkovitz, 1996)
1998 Scale Revise
(Park, 2004)
GEIA GEIA 19851985
GEOS-Chem
Olivier J.G.J. and J.J.M. Berdowski (2001a):Global emissions sources and sinks.
Updated Emission Inventory
EDGAR
1980 1990 1995 2000
LinearInterpolation
Long-term Emission Series based on EDGAR
1980 1981 1982 1998 1999 2000……
GEIA, CGRERCorrect the Emission Database
Van Aardenne, et al. (2001):A High Resolution Dataset of
Historical Anth. Trace Gas Emissions for the Period 1890-
1990.
Anthropogenic Emission Trend
South America
North America Europe
Africa Middle Asia
East Asia
World
Oceania
South America
North America EuropeNorth America Europe
Africa Middle Asia
East AsiaEast Asia
WorldWorld
Oceania
Model Setting
Period: 1986~2005 (1986~1995)
GEOS-Chem Version: v7-03-06
Met field type: GEOS-4
Horizontal Resolution: 4x5
Type of Simulation: Full-chemistry
Emissions: Default setting
While the Sulfide Anthropogenic and Biofuel
Emission are Updated with New Inventory
Surface SO2: 1986-1995
(a) SO2 Sfc. 1986 (ppb) (b) SO2 Sfc. 1990 (ppb) (c) SO2 Sfc. 1995 (ppb)
(d) 1990 - 1986 (ppb) (e) 1995 -1990 (ppb) (f) 1995 - 1986 (ppb)
(a) SO2 Sfc. 1986 (ppb) (b) SO2 Sfc. 1990 (ppb) (c) SO2 Sfc. 1995 (ppb)
(d) 1990 - 1986 (ppb) (e) 1995 -1990 (ppb) (f) 1995 - 1986 (ppb)
Surface Sulfate: 1986-1995
(a) Sulfate 1986 (ppb) (b) Sulfate 1990 (ppb) (c) Sulfate 1995 (ppb)
(d) 1990 - 1986 (ppb) (e) 1995 -1990 (ppb) (f) 1995 - 1986 (ppb)
(a) Sulfate 1986 (ppb) (b) Sulfate 1990 (ppb) (c) Sulfate 1995 (ppb)
(d) 1990 - 1986 (ppb) (e) 1995 -1990 (ppb) (f) 1995 - 1986 (ppb)
Comparison with Observation
1
14
3
2
2
3
4
WDCGG StationsWDCGG Stations
Comparison with Observation
WDCGG StationsWDCGG Stations
1
3
2
4
1
3
2
4
Discussions
Geography Information System
10 Years Series of Surface SO2
10 Years Series of Aerosol Optical Depth
10 Years Series: Surface SO2
10 Years Series: AOD
10 Years Series: AOD
Summary
New sulfide inventory has been used in GEOS-Chem to study the long-term variations of SO2 and sulfate
Emission trend (New vs. Old)
Total-N=Total-O; Corrected (Asia, NA); Detailed (Europe)
Simulated 10-year variations of SO2 concentrations are compared with WDCGG stations measurements, and it indicates that the model results are reasonable.
SO2 emission reduction is very significant in Europe since 1990 and we find that sulfate and total AOD over Europe has a clear downward trend since 1990. This may contribute to the observed brightening for stations in Europe.
Future
Long-term (1986-2005) SO2, sulfate AOD
Trend, comparisons with available
measurements.
Coupled with nucleation and growth
module to study the long-term change in
particle formation and CCN abundance.
The End
Thank YouThank You
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