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

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

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

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]

Comparison with ground based observations

Geographical locations of surface O3(star) and CO (circle), and ozonesonde(triangle) observation sites in India

Surface stations High altitude stations

Comparison with surface ozone observations

Comparison with ozonesonde observations (mean 2000-2009)

Comparison with surface CO observations

Surface stations

averaged from all six sites in India (representative of mean seasonal cycle)

Comparison with MOPITT (V6) column CO observations over Land

Autumn

Spring

Summer

Winter

MOPITT MOZART

Comparison with DOMINO (V2.2) troposphere column NO2 observations Over South Asia

OMI MOZART

OMI-MOZART

Comparison with DOMINO (V2.2) troposphere column NO2 observations

Surface

Total Column

Change in ozone due to 20% reduction in all anthropogenic emission [GLOALL]

[Base – Control]

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

BASE ‐ SASIN

BASE ‐ SASTRN

BASE ‐ SASEP

Change is ozone (in ppb) due to20% reduction in different sectors in SA

Summer:@200hpa

Winter: @Surface

Change is surface ozone (in ppb) due to20% reduction in different sectors in SA

BASE ‐ SASEP BASE ‐ SASIN

BASE ‐ SASTRN

Response to Regional and Extra-Regional Changes (RERER)

Summer 200hPa

Winter troposphere column

RERER = (∆O3(BASE-GLOALL) - ∆ O3(BASE-SASALL))/ ∆ O3(BASE-GLOALL)

Change is column ozone (in DU) due to 20% reduction in all global Aircraft emission

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]

Thank you

Change in ozone during summer due to 20% reduction in NOx from SA

BASE – SASNOx :@200hpa

BASE – SASNOx :@TOC

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)

Comparison with MOPITT (V6) Surface CO observations over Land

Autumn

Spring

Summer

Winter

MOPITT MOZART

20% reduction in all anthropogenic emission [SASALL]

Surface (Winter)