Tropospheric Ozone Observations at UAH

NDACC Lidar Working Group Meeting, NASA/JPL, Table Mountain, CA, Nov. 5, 2013

http://nsstc.uah.edu/atmchem/

Shi Kuang1, Mike Newchurch1, John Burris2, Wesley Cantrell1 , Lihua Wang1, Guanyu Huang1, Ed Eloranta3

1UAHuntsville, 2NASA/GSFC, 3U. Of Wisconsin-Madison

2

Higher increasing rate of the surface O3 before 10AM on Oct. 5 due to the low-level

transport on the previous day

Oct. 2, 08

Oct. 3, 08

Oct. 1, 08

Oct. 5, 08 Oct. 6, 08

Oct. 4, 08

Surface O3 and convective boundary layer height

O3 Transport through Low-level Jet

[Kuang et al., 2011b AE]

A collocated Mobile Integrated Profiling System (MIPS) provides aerosol backscatter, wind/RH/T profiles, and other surface data.

Ceilometer backscatter

Stratosphere-to-Troposphere Transport

Ozone lidar and ozonesonde measurements, as well as the MPR-observed and model-derived tropopause.

Pressure-altitude cross-section of PV (black lines), RH (color contours), and tropopause pressure, at 86.65°W longitude at 1200 UTC 27 April 2010 derived from the NAM model.

IPV at 320-K isentropic surface

[Kuang et al. 2012 JGR]

Both strato source, but diff air mass

STE impact on PBL and surface

ozonesonde

Rain at 2300 Jun 1st

Fog

6/1

6/4

6/8 6/9 6/10

6/5

6/11 6/12

2-min O3 Lidar Profiling at Huntsville during the SENEX Campaign, June 2013Shi Kuang, Mike Newchurch, John Burris, Wesley Cantrell, Kevin Knupp

LT=UTC-5

ozonesonde

Low clouds

Low O3 due to raining in the early morningStrato source

~60 ppbv backgrond O3 in the FT

Low O3, likely southern transport (ocean?)

Ceilometer data

Norcturnal enhancement due to transport?

Ozonesonde

NOAA P3

See next page for detail

O3

wind

SENEX O3 & CO Measurements on June 29, 2013

O3 digital data from Ilana Pollack and Thomas Ryerson; CO data from John S Holloway

COSome SI air, but some insufficient mixing

MOZART CO fire tracer at 900hPa, 20130629 00Z

GOES 7.0um, mid-trop moist, 20130629 00Z

A Complicated Case – HSV affected by both STE and Smoke Transport

Comparison of the UAH O3 lidar, UAH ozonesonde, and NOAA P3 aircraft measurements

Lidar 2100UTP3 2200UT

Ozonesonde 1830UT

4km ASL

A Closer Look of the O3 Profiling by Multiple Sensors June 29, 3013

Ed Eloranta of U. of Wis., provided HSRL plots, http://hsrl.ssec.wisc.eduNan Feng and Sundar Christopher of UAH provided analysis on aerosol.

The P-3 obs mostly shows stratospheric source of the high O3 at 4 km with low H2O, low CO. But it missed the obs. at 5 km, so can’t tell the source of 5-km air. The small thickness, short lifetime, and high O3 suggests a local, pollution source.

Note the near-surface O3 changing with ML height evolution

CA/CO forest fire

Rain

Diff. aerosolsSmall size, urban. AC just missed this alt.

Affected by both smoke and strato

Co-located O3 and Aerosol Obs. at UAH – Correlation, Source, Chemistry?

Idaho/CA Smoke Observed above Huntsville14 Aug. 2013

~15ppb increase

~25ppb enhancement 10.2km AGLGMAO, 8/12-8/19

NASA DC8 O3 DIAL & HSRL Obs. on Aug.

14, 2013

Courtesy of John Hairhttp://asd-www.larc.nasa.gov/lidar/seac4rs/

HSV

HSV

Ozone Lidar & Ozonesonde Obs. at Huntsville for SEAC4RS, Aug. 2013Shi Kuang, Mike Newchurch, John Burris, Guanyu Huang, Wesley Cantrell, Lihua Wang, Kevin Knupp, Ed Eloranta

8/8 8/9

8/158/148/138/12

8/19

8/27

8/228/218/20

8/28

Pre-frontal system; low PBL O3 due to clouds and precipitation; typical summertime high upper-trop O3.

Cloudy and moist PBL; reduced upper-trop O3

Enhanced O3 after cold front passing

Idaho smoke

8/30

Ozonesonde

Higher PBL O3

Low PBL O3 and high mid- or upper-trop O3, surprising?

[Newchurch et al., 2003] Until 2011, unsubmitted

Changed

Comparison of the Recent Results with Ten Years Ago

Boulder, CO

Huntsville, AL

Huntsville O3 Trend (2000-2011)

Ozonesonde EPA

Winter Spring

Summer Fall

The Opportunity for Us to Answer SE Chemistry Questions

• What did the models miss causing underestimated organic and dust aerosols [Drury et al., 2010] and overestimated summer surface ozone [Fiore et al., 2009] in the southeast U.S.?

• What are the roles of transport and lightning-NOx on the summer upper-tropospheric ozone maxima in the southeast U.S. [Cooper et al., 2008]?

• What is the role of clouds on the distribution of ozone?

Backup Slides

Huntsville

Boulder

Dashed: yearly averageDotted: yearly trend

Blue: tropospheric O3

Black: tropopause height

Red: total O3

Why high freq oscillation?

1. Both high total in 2010.

2. TOC/TP of two sites differ in JJA.

3. Both positive trop O3 and total O3 trend.