Simulation of GEOS-Chem with HTAP inventory : Evaluation MICS Presentation… · Simulation of...
Transcript of Simulation of GEOS-Chem with HTAP inventory : Evaluation MICS Presentation… · Simulation of...
Simulation of GEOS-Chem with HTAP inventory : Evaluation
Duseong S. Jo and Rokjin J. Park
Seoul National University
23 MAY 2014 MICS-ASIA/HTAP workshop
Model GEOS-Chem v9.1.3
Meteorological field MERRA reanalysis product
Resolution 2° latitude X 2.5° longitude X 47 vertical layers up to 0.01 hpa
Emissions Anthropogenic : HTAPv2.1 inventory (SO2, NOx, NMVOC*, CO, NH3, BC and OC)
Biomass burning : GFEDv3 (monthly)
DMS : Lana et al. (2011)
Volcano SO2 : AeroCom inventory
Biogenic : MEGAN v2.1
Global 3-hourly timeseries files provided by SNU Can download 3-hourly global timeseries files in
ftp://presto.snu.ac.kr/pub/SNU_GEOS_Chem_v9.1.3/ ID : anonymous
*We used the NMVOC speciation of GEOS-Chem native inventory but scaled the total NMVOC emission to that of HTAPv2 emission.
Global 3-hourly timeseries files provided by SNU Can download 3-hourly global timeseries files in
ftp://presto.snu.ac.kr/pub/SNU_GEOS_Chem_v9.1.3/ ID : anonymous
NAME Description
BASE Base run (CH4 : 1798 ppbv)
GLOINC 20% anthropogenic emission decrease in the globe
GLODEC 20% anthropogenic emission increase in the globe
EASDEC 20% anthropogenic emission decrease in East Asia
NAMDEC 20% anthropogenic emission decrease in North America
EURDEC 20% anthropogenic emission decrease in Europe
CH4INC Global CH4 concentration of 2121 ppbv
CH4DEC Global CH4 concentration of 1562 ppbv
Evaluation against WOUDC
Ozone evaluation against climatological WOUDC observation
500 hpa 800 hpa SFC
(Kim et al., 2013 in 6th GEOS-Chem meeting)
Slope ~ 1 R2 > 0.5
Evaluation against EANET Evaluation period : 2010 Time resolution : Month
Ozone and NOx
[ppbv]
Ozone NOx
(Jeong and Park, 2013)
GEOS-Chem does not capture low concentration of ozone in both case
GEOS-Chem significantly underestimates NOx
concentration especially for urban region
Ozone and NOx
[ppbv]
Ozone NOx
(Jeong and Park, 2013)
GEOS-Chem does not capture low concentration of ozone in both case
GEOS-Chem significantly underestimates NOx
concentration especially for urban region
SO4, NH4, and NO3 (Annual) SO4 NH4 NO3
[µg m-3]
(Jeong and Park, 2013)
SO4, NH4, and NO3 (Annual vs. Monthly) SO4 NH4 NO3
Simulation ability : Annual mean comparison > Monthly mean comparison
[µg m-3]
Evaluation for the United States: against CASTNET (ozone) and
IMPROVE(aerosol)
Ozone Period : 2008~2010 Time resolution : Month
CASTNET
MO
DE
L
[ppbv]
All season
Coefficient of determination is low in terms of retrieving monthly variation of ozone
GEOS-Chem (global model) has a weakness in reproducing night-time PBL
Performance : MDA8 > 24hr averaged ozone
JJA
CASTNET
MO
DEL
(Zhang et al., 2013)
Carbonaceous aerosols BC (EC) OC
[µgC/m3]
(Park et al., 2006)
Inorganic aerosols (Annual mean)
SO4 NO3
[µg/m3]
GEOS-Chem with HTAP emission overestimates inorganic aerosol concentration observed by IMPROVE network
DJF
MAM
JJA
SON
SO4 NO3
(Heald et al., 2012)
Inorganic aerosols (Seasonal mean)
DJF
MAM
JJA
SON
SO4
(Heald et al., 2012)
[TgN(S) yr-1]
HTAPv2 BASE:2010
Heald et al, BASE:2004
NOx 5.0 5.8
SOx 6.1 6.7
NH3 3.5 2.2
(Granier et al., 2010)
Inorganic aerosols (Seasonal mean)
NMVOC speciation HTAP provides only for total NMVOC emissions and does not have speciation information. We used the NMVOC speciation of GEOS-Chem native inventory but scaled the total NMVOC emission to that of HTAP emission.
NMVOC speciation HTAP provides only for total NMVOC emissions and does not have speciation information. We used the NMVOC speciation of GEOS-Chem native inventory but scaled the total NMVOC emission to that of HTAP emission.
GEOS-Chem (Full chemistry
simulation with SOA)
RETRO
Species [TgC] [Tg] [Tg] Species Name
ALK4 32.55 39.33 30.29
Butanes(9.33) + Pentanes(9.96) + Hexanes_and_higher_alkanes(11.00)
MEK 3.51 5.26 5.84 total_ketones PRPE 2.35 2.74 2.74 propene C3H8 2.88 3.52 3.66 propane CH2O 0.46 1.16 1.17 formaldehyde C2H6 4.09 5.11 5.26 ethane ALD2 0.93 1.71 2.65 other_aldehydes BENZ 3.21 3.48 3.50 benzene TOLU 5.60 6.13 6.45 toluene XYLE 4.76 5.25 5.56 xylene C2H2 2.50 acetylene C2H4 6.48 ethene
HCOOH 9.51 total_acids 4.99 esters 3.65 ethers
23.81 other_VOCs 3.42 other_aromatics 8.93 total_alcohols 1.17 trimethylbenzene
Total 60.3 73.7 131.6 Total HTAP NMVOC total : 143 Tg
GEOS-Chem NMVOC emissions are based on RETRO emissions
GEOS-Chem does not treat all NMVOC tracers which are included in RETRO emissions
ALK4 fraction GEOS-Chem : 32.55/60.3 54% RETRO : 30.29/131.6 23%
NMVOC speciation HTAP provides only for total NMVOC emissions and does not have speciation information. We used the NMVOC speciation of GEOS-Chem native inventory but scaled the total NMVOC emission to that of HTAP emission.
GEOS-Chem (Full chemistry
simulation with SOA)
RETRO
Species [TgC] [Tg] [Tg] Species Name
ALK4 32.55 39.33 30.29
Butanes(9.33) + Pentanes(9.96) + Hexanes_and_higher_alkanes(11.00)
MEK 3.51 5.26 5.84 total_ketones PRPE 2.35 2.74 2.74 propene C3H8 2.88 3.52 3.66 propane CH2O 0.46 1.16 1.17 formaldehyde C2H6 4.09 5.11 5.26 ethane ALD2 0.93 1.71 2.65 other_aldehydes BENZ 3.21 3.48 3.50 benzene TOLU 5.60 6.13 6.45 toluene XYLE 4.76 5.25 5.56 xylene C2H2 2.50 acetylene C2H4 6.48 ethene
HCOOH 9.51 total_acids 4.99 esters 3.65 ethers
23.81 other_VOCs 3.42 other_aromatics 8.93 total_alcohols 1.17 trimethylbenzene
Total 60.3 73.7 131.6 Total HTAP NMVOC total : 143 Tg
0.23
0.04 0.02 0.03 0.01 0.04 0.01 0.03 0.05 0.04 0.02 0.05 0.01 0.04 0.03 0.18 0.03 0.07 0.01 1.00
GEOS-Chem NMVOC emissions are based on RETRO emissions
GEOS-Chem does not treat all NMVOC tracers which are included in RETRO emissions
ALK4 fraction GEOS-Chem : 32.55/60.3 54% RETRO : 30.29/131.6 23%
We further simulated the
NMVOC concentrations using emission speciation factors retrieved by RETRO inventory
Global annual benzene concentrations
HTAP (Default) HTAP
(New speciation with RETRO)
NMVOC concentrations are greatly decreased in the simulation of HTAP inventory with RETRO NMVOC speciation factor
Global annual ozone concentrations HTAP (Default)
HTAP (New speciation with RETRO)
Diff. (New-Default)
In case of ozone, there is no big difference between the model results.
Maximum difference ~7ppbv
Ozone evaluation against climatological WOUDC observation
500 hpa 800 hpa SFC (1)
(2)
Ozone (CASTNET and EANET)
CASTNET
[ppbv]
CASTNET
MO
DEL
(1) GEOS-Chem native
MO
DEL
M
OD
EL
MO
DEL
M
OD
EL
(2) RETRO speciation
CASTNET
EANET