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Status HTAP2 model runs (MOZART-4) at Indian Institute of Tropical Meteorology (jointly with NCAR): Initial results
Indian Institute of Tropical Meteorology, Pune, India
Divya. E. Surendran, Sachin. D. Ghude, G. Beig, C.K. Jena,
National Center for Atmospheric Research (NCAR), Boulder, USA
L. Emmons, R. Kumar, G. Pfister
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Model for Ozone and Related chemical Tracers, version 4 (MOZART-4)
• Model Simulation Domain : Global domain for 2008 to 2010• Spinup : Six month (July 2007)• Resolution : 1.5° × 2.9° 56 (layers up-to 1 hPa)• Anthropogenic Emission : HTAP Version 2.2 Emissions
• Biogenic Emissions : MEGAN
• Biomass burning emissions : GFED V2• Driving Meteorology : MERRA (reanalysis for GEOS-5)
Gas Phase Chemistry : MOZART-4 85 gas-phase species, 39 photolysis, 157 gas-phase reactions
Boundary Conditions• Surface: Fixed boundary conditions for long lived species like CH4,H2 and N2O, constrained by observations
instead of direct emissions(in troposphere concentrations are more accurate than emission) CH4:NOAA/ESRL network. H2:NOAA/ESRL/GMD N2O: IPCC 2000
Model : https://www2.acd.ucar.edu/gcm/mozart
Reference: Emmons, et al., 2010. Description and evaluation of the Modelfor Ozone and Related chemical Tracers, version 4 (MOZART-4). Geoscientific Model Development 3, 43–67
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Current Status of the Simulation
Global 2008 -2010 Submitted to HTAP server
1) Base case simulation for 2008 [BASE]
2) Base case simulation for 2010 [BASE]
Model output: Daily 6 hourly at all model level
Variable list : (32 variable including 3 meteorological variables)
Ps, ta, rh, vmro3, vmrco, vmrno, vmrno2, vmrhno3, vmrpan, vmroh, vmrh2o2, vmrho2, vmrnh3, vmrso2, vmrdms, vmrc2h6, vmrc2h4, vmrc3h6, vmrc3h8, vmrc10h16, vmrtolu, vmrglyoxal, vmrch3cho, prodo3, losso3, lossch4, lossco, jno2, jo3o1d, vmrn2o5, vmrisop, vmrhcho
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Current Status of the Simulation
Global
1) Base case simulation for 2008 [BASE]
2) Base case simulation for 2010 [BASE]
3) 20% reduction of all anthropogenic emissions for 2010 [GLOALL]
4) 20% reduction in aircraft emission for 2010 (global)
Tire-1 region -5 (South Asia) for 2010
5) 20% reduction in all anthropogenic emission [SASALL]
6) 20% reduction in NOx emission [SASNOX]
7) 20% reduction in transport sector emission [SASTRN]
8) 20% reduction in energy sector emission [SASEP]
9) 20% reduction in industry sector emission [SASIN]
10) 20% reduction in biomass burning emissions [SASFIR]
11) Replace HTAP-v2 NOx emissions with India NOx emissions
Tire-1 region -6 (East Asia: China Korea, Japan )
11) 20% reduction all anthropogenic emission [EASALL]
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Comparison with ground based observations
Geographical locations of surface O3(star) and CO (circle), and ozonesonde(triangle) observation sites in India
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Surface stations High altitude stations
Comparison with surface ozone observations
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Comparison with ozonesonde observations (mean 2000-2009)
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Comparison with surface CO observations
Surface stations
averaged from all six sites in India (representative of mean seasonal cycle)
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Comparison with MOPITT (V6) column CO observations over Land
Autumn
Spring
Summer
Winter
MOPITT MOZART
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Comparison with DOMINO (V2.2) troposphere column NO2 observations Over South Asia
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OMI MOZART
OMI-MOZART
Comparison with DOMINO (V2.2) troposphere column NO2 observations
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Surface
Total Column
Change in ozone due to 20% reduction in all anthropogenic emission [GLOALL]
[Base – Control]
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20% reduction in all anthropogenic emission [SASALL]
Pressure longitude cross-section (zonal averaged over the 5° – 35° N) of (top) change in CO and O3 mixing ratio(ppbv) during summer season, and (bottom) horizontal structure of change in and O3 mixing ratios at 200mbduring summer season due to 20% reduction in all anthropogenic emissions over South Asia
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BASE ‐ SASIN
BASE ‐ SASTRN
BASE ‐ SASEP
Change is ozone (in ppb) due to20% reduction in different sectors in SA
Summer:@200hpa
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Winter: @Surface
Change is surface ozone (in ppb) due to20% reduction in different sectors in SA
BASE ‐ SASEP BASE ‐ SASIN
BASE ‐ SASTRN
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Response to Regional and Extra-Regional Changes (RERER)
Summer 200hPa
Winter troposphere column
RERER = (∆O3(BASE-GLOALL) - ∆ O3(BASE-SASALL))/ ∆ O3(BASE-GLOALL)
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Change is column ozone (in DU) due to 20% reduction in all global Aircraft emission
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Plans for the additional Simulation and analysis
Regional (Boundary conditions from MOZART-4) WRF-Chem:
1) Base case simulation for 2010 [BASE]
Tire-1 region -5 (South Asia) for 2010
2) 20% reduction in all anthropogenic emission [SASALL]
3) 20% reduction in NOx emission [SASNOX]
4) 20% reduction in CO emission [SASCO]
5) 20% reduction in transport sector emission [SASTRN]
6) 20% reduction in energy sector emission [SASEP]
7) 20% reduction in industry sector emission [SASIN]
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Thank you
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Change in ozone during summer due to 20% reduction in NOx from SA
BASE – SASNOx :@200hpa
BASE – SASNOx :@TOC
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Initial Finding related to simulations (Focusing on South Asia)
1. Comparison with surface measurements over South Asia
2. Comparison With MOPITT and OMI Satellite retrieval
3. 20% perturbation [SASALL, SASEP, SASTRN, SASIN, SASNOX]
4. 20% reduction in Aircraft Emissions
5. Response to Regional and Extra-Regional Changes (RERER)
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Comparison with MOPITT (V6) Surface CO observations over Land
Autumn
Spring
Summer
Winter
MOPITT MOZART
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20% reduction in all anthropogenic emission [SASALL]
Surface (Winter)