(click here to access data)

Stratospheric ClO, BrO
AAOE (1987)
AASE (1989)
New Mexico Ballooning (1991)
AASE II (1991-1992)
SESAME (1995)
HALOZ I (Antarctica 1996)
WAM (1998)
RISO (1998)
HALOZ II (Laramie 1999-2001)
SOLVE (1999-2000)
HALOZ-Kiruna (2000)
HALOZ-New Zealand (2001)
HALOZ-Kiruna (2002)

Boundary Layer ClO, BrO
ARCTOC (1996)
PSE (Alert 2000)

SPADE (1992)
ACCENT II (1999)
IDEAS (2002)
CELTIC (2003)
PUMA-A (2004)
PUMA-B (2005)
PUMA-C (2006)
MILAGRO (2006)
Weld Co Gas Well Survey (2013)

NO and NO2
TRACE-P (2001)
CELTIC (2003)

CELTIC (2003)
IONS (2006)

TexAQS (2000)
PROPHET (2001)
CELTIC (2003)
MILAGRO (2006)
Antarctica (2007)
HAVAIKI (2008)
PLOWS (2009-2010)
Beltsville AQS (2009)
Hawaii Transects (2010)
IDEAS (2011)
Antarctic Aerosols (2012)
Weld Co Gas Well Survey (2013)
2odiac (2014)
2odiac (2015)
WE-CAN (2018)
Covid-19 Aerosol Emissions (2020-2021)

Black Carbon
Colorado Wildfire AQS (2013)


VOCALS (2008)
PREDICT (2010)
ICE-T (2011)
IDEAS-2013 (2013)
ARISTO (2017)
WE-CAN (2018)

H2O and Isotopologues
HAVAIKI (2008)
Hawaii Transects (2010)
ICE-T (2011)
IDEAS-2013 (2013)
ORACLES (2017)
IMPACTS (2020)
IMPACTS (2022)

CH4 Stable Isotopes
Weld Co Gas Well Survey (2013)

Cloud Total Water
DC3 (2012)
ARISTO (2015)
ORCAS (2015-2016)
KORUS-AQ (2016)
ARISTO (2017)
ORACLES  (2017)
SPICULE (2021)
IMPACTS (2022)

We have participated in over 60 field campaigns, most using aircraft. We carry out in situ measurements of various species and parameters, most notably reactive halogens, aerosols and clouds. We recently completed a series of measurements of condensed water contents and cloud droplet residuals as part of the SOCRATES and WE-CAN campaigns. We continue to analyze observations of condensed water contents from the NSF Gulfstream V aircraft during the Summer 2012 NSF DC3 Experiment, the IDEAS 2013 campaign, and the most recent ORCAS campaign based in Punta Arenas, Chile.  Some recent results appear in a paper by Stith et al.. We are also developing new methods for measuring isotopologues of water based on lasers in the 1.4 micron and 2.7 micron regions of the infrared spectrum.  Based on this work, we hope to obtain funding to build a new class of cloud-observing instruments to fly on unmanned aerial vehicles to examine the role of air pollution on cloud properties. In 2011 we completed the ICE-T campaign, based in St. Croix in July 2011.  We collaborated with Prof. David Noone of Oregon State U.  to make the first-ever measurements of the isotopic composition of water in cloud droplets using a Picarro CRDS coupled to a counterflow virtual impactor, and we are working on new methods for measuring the  stable isotopes in condensed water from aircraft.

Photos from our adventures during ICE-T.


June 2011 - Integration of the UHSAS and the Picarro fast water isotopes instruments onto the C-130.
July 2011 - Photos from St. Croix

See link for a list of publications from some of our field activities.

St Croix