Welcome to the START08/Pre-HIPPO

Workshop

NCAR, Boulder, COJanuary 8-9, 2008

Ozone and Precursors

Ozone

STE

In-situ Chemistry

(NOx) NO

O2 + h O3

O3 + h O(1D) O(1D) + N2O NO

NO NO2 HNO3

O3 H2OCONOy

O3 H2OCONOy

Strato-sphere

Tropo-sphere

Averaged Ozone Budget (MOZART)

Model Dynamics MA-CCM NCEP ECMWF

Transport from strat. 343 918 726Net photoch. production 509 -60 141Dry Deposition 857 857 865

Burden 362 366 332

GLOBAL BUDGET OF TROPOSPHERIC OZONE (Tg O3 yr-1)

O3

O2 hn

O3

OH HO2

h, H2O

Deposition

NO

H2O2

CO, VOC

NO2

hn

STRATOSPHERE

TROPOSPHERE

8-18 km

Chem prod in troposphere 4700

±700Chem loss in troposphere 4200

±500Transport from stratosphere 500

±100Deposition 1000

±200

IPCC (2006) average of 12 models

Ozone lifetime: 24 ± 4 days

From Daniel Jacob

Tropospheric Ozone Budget

-800

-400

0

400

800

1200

1600

KNMIMATCH

ECHAM/TM3

LOGAN, 1981

ECHAM4

GCTMUIO UCI HARVARD

STOCHEM

MOZART2

MOZART1

IMAGESGEOS-CHEM

STEL-P

Ozo

ne fl

ux T

g/yr

IPCC (2001) and other sources

475 Tg/year

Murphy and Fahey, 1994McLinden et al., 2000

STE(strat-trop exch)

P (Production)

L (Loss)

The Tropopause

Identifying and quantifying exchange processes

(Pan et al., 2003)

In situCO and ozoneFrom DC8

Lidar ozone

Ozone MOZART-3

Greenland

Iceland

THETA=362K

GV Capabilities

• Maximum Range: 6,055 nm (11,214 km)

• Maximum Cruise Altitude: 51,000 ft (15,545 m)

• Maximum Scientific Payload: 6,600 lbs (2,994 kg)

• Typical Zero Fuel Weight: 53,679 lbs (24,349 kg)

• Maximum Mission Fuel: 37,221 lbs (16,883 kg)

• Maximum Ramp Weight: 90,900 lbs (41,232 kg)

• Maximum Takeoff Weight: 90,500 lbs (41,051 kg)

** Data shown are for HIAPER (GV Serial Number 677) **

The Tropopause:Science and Art