selected publications

• conference proceeding

  • Digital Phase Control of an Integrated Resonant Igniter Using a Soft Saturation Core for High Intensity Discharge Lamps.  1526-+. 2009
  • Monitoring global atmospheric constituents capable of forcing climate change.  Proceedings of SPIE. 2-14. 1999
  • AIRBORNE MEASUREMENTS OF AEROSOL OPTICAL-PROPERTIES OVER SOUTH-CENTRAL NEW-MEXICO.  Atmospheric environment. 1363-1368. 1993
  • MICROANALYSIS OF THE AEROSOL COLLECTED OVER SOUTH-CENTRAL NEW-MEXICO DURING THE ALIVE FIELD EXPERIMENT, MAY DECEMBER 1989.  Atmospheric environment. 1169-1183. 1991
  • AEROSOL CHARACTERISTICS OF ARCTIC HAZE SAMPLED DURING AGASP-II.  Atmospheric environment. 937-949. 1988
  • CARBON-DIOXIDE CYCLES IN TROPICAL EAST-AFRICA.  1077-1077. 1978
  • CN CONCENTRATION AND AEROSOL COMPOSITION MEASUREMENTS ON AND AROUND MOUNT KENYA, EAST-AFRICA.  1086-1086. 1978
  • SOME SIZE AND COMPOSITION CHARACTERISTICS OF AEROSOLS AT MOUNT KENYA, EAST-AFRICA.  Bulletin of the American Meteorological Society. 1519-1519. 1978
  • TEA LITTER - PROLIFIC SOURCE OF ICE (HAIL) NUCLEI.  1086-1086. 1978
  • ATMOSPHERIC ICE NUCLEI - NO DETECTABLE EFFECTS FROM A COAL-FIRED POWERPLANT PLUME.  925-925. 1976
  • OCEAN DERIVED ICE NUCLEI.  Bulletin of the American Meteorological Society. 148-148. 1976
  • ACTIVE ICE NUCLEI ASSOCIATED WITH VIABLE BACTERIA IN NOVA-SCOTIA MARINE FOGS.  994-994. 1975
  • BIOGENIC COMPONENT OF SAHELIAN EOLIAN DUST - POSSIBLE DROUGHT FACTOR.  994-995. 1975
  • BIOGENIC SOURCES OF ATMOSPHERIC ICE NUCLEI - REVIEW.  994-994. 1975
  • HIGHLY ACTIVE FREEZING NUCLEI PRODUCED DURING TREE LITTER DECOMPOSITION.  Bulletin of the American Meteorological Society. 110-110. 1975
  • OVERGRAZING AND BIOGENIC ICE NUCLEI - PHYSICAL LINK IN SAHELIAN DROUGHT.  Bulletin of the American Meteorological Society. 113-114. 1975

• journal article

  • Atmospheric oil and natural gas hydrocarbon trends in the Northern Colorado Front Range are notably smaller than inventory emissions reductions.  Elementa: Science of the Anthropocene. 2021
  • Investigating large methane enhancements in the US San Juan Basin.  Elementa: Science of the Anthropocene. 2020
  • Bioaerosol field measurements: Challenges and perspectives in outdoor studies.  Aerosol Science and Technology. 520-546. 2019
  • Comprehensive characterization of an aspen (Populus tremuloides) leaf litter sample that maintained ice nucleation activity for 48 years.  Biogeosciences. 1675-1683. 2019
  • Methane source attribution in a US dry gas basin using spatial patterns of ground and airborne ethane and methane measurements.  Elementa: Science of the Anthropocene. 2019
  • Boundary layer ozone in the Northern Colorado Front Range in July-August 2014 during FRAPPE and DISCOVER-AQ from vertical profile measurements.  Elementa: Science of the Anthropocene. 2019
  • Aerially guided leak detection and repair: A pilot field study for evaluating the potential of methane emission detection and cost-effectiveness.  Journal of the Air and Waste Management Association. 71-88. 2019
  • Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location.  Atmospheric Chemistry and Physics. 18023-18042. 2018
  • Temporal variability largely explains top-down/bottom-up difference in methane emission estimates from a natural gas production region.  Proceedings of the National Academy of Sciences of USA. 11712-11717. 2018
  • HOVERCAT: a novel aerial system for evaluation of aerosol-cloud interactions.  Atmospheric Measurement Techniques. 3969-3985. 2018
  • Surface ozone in the Colorado northern Front Range and the influence of oil and gas development during FRAPPE/DISCOVER-AQ in summer 2014.  Elementa: Science of the Anthropocene. 2017
  • Application of Gauss's theorem to quantify localized surface emissions from airborne measurements of wind and trace gases.  Atmospheric Measurement Techniques. 3345-3358. 2017
  • Validation of 10-year SAO OMI Ozone Profile (PROFOZ) product using ozonesonde observations.  Atmospheric Measurement Techniques. 2017
  • Improved Mechanistic Understanding of Natural Gas Methane Emissions from Spatially Resolved Aircraft Measurements.  Environmental Science and Technology (Washington). 7286-7294. 2017
  • Airborne Quantification of Methane Emissions over the Four Corners Region.  Environmental Science and Technology (Washington). 5832-5837. 2017
  • POP GOES THE BALLOON! What Happens when a Weather Balloon Reaches 30,000 m asl?.  Bulletin of the American Meteorological Society. 216-216. 2017
  • O-3, CH4, CO2, CO, NO2 and NMHC aircraft measurements in the Uinta Basin oil and gas region under low and high ozone conditions in winter 2012 and 2013.  Elementa: Science of the Anthropocene. 2016
  • Quantifying wintertime boundary layer ozone production from frequent profile measurements in the Uinta Basin, UT, oil and gas region.  Journal of Geophysical Research: Atmospheres. 11038-11054. 2016
  • Impact of equatorial and continental airflow on primary greenhouse gases in the northern South China Sea.  Environmental Research Letters. 2015
  • Understanding high wintertime ozone pollution events in an oil- and natural gas-producing region of the western US.  Atmospheric Chemistry and Physics. 411-429. 2015
  • CO2 Monitoring and Background Mole Fraction at Zhongshan Station, Antarctica.  Atmosphere. 686-698. 2014
  • A new look at methane and nonmethane hydrocarbon emissions from oil and natural gas operations in the Colorado Denver-Julesburg Basin.  Journal of Geophysical Research: Atmospheres. 6836-6852. 2014
  • Characteristics of atmospheric carbon monoxide at a high-mountain background station in East Asia.  Atmospheric Environment. 613-622. 2014
  • An overview of regional experiments on biomass burning aerosols and related pollutants in Southeast Asia: From BASE-ASIA and the Dongsha Experiment to 7-SEAS.  Atmospheric Environment. 1-19. 2013
  • Methane emissions estimate from airborne measurements over a western United States natural gas field.  Geophysical Research Letters. 4393-4397. 2013
  • A three-dimensional characterization of Arctic aerosols from airborne Sun photometer observations: PAM-ARCMIP, April 2009.  Journal of Geophysical Research: Atmospheres. 2010
  • Rapid photochemical production of ozone at high concentrations in a rural site during winter.  Nature Geoscience. 120-122. 2009
  • Climate Assessment for 2001.  Bulletin of the American Meteorological Society. S1-S62. 2002
  • Climate assessment for 2000.  Bulletin of the American Meteorological Society. S1-S55. 2001
  • Climate assessment for 1999.  Bulletin of the American Meteorological Society. S1-S50. 2000
  • Results from the 1995 Stratospheric Ozone Profile Intercomparison at Mauna Loa.  Journal of Geophysical Research: Atmospheres. 30505-30514. 1999
  • Radiosonde observations from the former Soviet "North Pole" series of drifting ice stations, 1954-90.  Bulletin of the American Meteorological Society. 2019-2026. 1999
  • Long-range transport of anthropogenic aerosols to the National Oceanic and Atmospheric Administration baseline station at Mauna Loa Observatory, Hawaii.  Journal of Geophysical Research: Atmospheres. 18521-18533. 1999
  • Climate assessment for 1998.  Bulletin of the American Meteorological Society. S1-S48. 1999
  • New ultraviolet spectroradiometer measurements at Mauna Loa observatory.  Geophysical Research Letters. 2121-2124. 1996
  • Record low ozone at Mauna Loa observatory during winter 1994-1995: A consequence of chemical and dynamical synergism?.  Geophysical Research Letters. 1533-1536. 1996
  • CHEMICAL AND METEOROLOGICAL INFLUENCES ON SURFACE OZONE DESTRUCTION AT BARROW, ALASKA, DURING SPRING 1989.  Atmospheric environment. 2851-2863. 1993
  • COMPOSITION OF BR-CONTAINING AEROSOLS AND CASES RELATED TO BOUNDARY-LAYER OZONE DESTRUCTION IN THE ARCTIC.  Atmospheric environment. 2839-2849. 1993
  • INDIVIDUAL PARTICLE ANALYSES OF ARCTIC AEROSOL SAMPLES COLLECTED DURING AGASP-III.  Atmospheric environment. 2825-2837. 1993
  • STABLE LEAD-ISOTOPE RATIOS IN ALASKAN ARCTIC AEROSOLS.  Atmospheric environment. 2865-2871. 1993
  • TROPOSPHERIC TEMPERATURE TRENDS IN THE ARCTIC - 1958-1986.  Journal of Geophysical Research: Atmospheres. 12825-12838. 1993
  • BROMOALKANE PRODUCTION BY ANTARCTIC ICE ALGAE.  Tellus Series B: Chemical and Physical Meteorology. 120-126. 1993
  • SPRING MEASUREMENTS OF TROPOSPHERIC BROMINE AT BARROW, ALASKA.  Geophysical Research Letters. 201-204. 1993
  • ABSENCE OF EVIDENCE FOR GREENHOUSE WARMING OVER THE ARCTIC-OCEAN IN THE PAST 40 YEARS.  Nature. 335-337. 1993
  • TROPOSPHERIC LOW-LEVEL TEMPERATURE INVERSIONS IN THE CANADIAN ARCTIC.  Atmosphere-Ocean. 511-529. 1992
  • INSITU METEOROLOGICAL SOUNDING ARCHIVES FOR ARCTIC STUDIES.  Bulletin of the American Meteorological Society. 1824-1830. 1992
  • AEROSOL-PARTICLES IN THE KUWAIT OIL FIRE PLUMES - THEIR MORPHOLOGY, SIZE DISTRIBUTION, CHEMICAL-COMPOSITION, TRANSPORT, AND POTENTIAL EFFECT ON CLIMATE.  Journal of Geophysical Research: Atmospheres. 15867-15882. 1992
  • COMPOSITION ANALYSES OF SIZE-RESOLVED AEROSOL SAMPLES TAKEN FROM AIRCRAFT DOWNWIND OF KUWAIT, SPRING 1991.  Journal of Geophysical Research: Atmospheres. 14513-14520. 1992
  • SYMPOSIUM ON THE TROPOSPHERIC CHEMISTRY OF THE ANTARCTIC REGION.  Tellus Series B: Chemical and Physical Meteorology. 250-251. 1992
  • MEASURED AND CALCULATED OPTICAL PROPERTY PROFILES IN THE MIXED LAYER AND FREE TROPOSPHERE.  Journal of Geophysical Research: Atmospheres. 12837-12850. 1992
  • THEORETICAL HEIGHTS OF BUOYANT CONVECTION ABOVE OPEN LEADS IN THE WINTER ARCTIC PACK ICE COVER.  Journal of Geophysical Research: Oceans. 9411-9422. 1992
  • LOW-LEVEL TEMPERATURE INVERSIONS OF THE EURASIAN ARCTIC AND COMPARISONS WITH SOVIET DRIFTING STATION DATA.  Journal of Climate. 615-629. 1992
  • ELECTRON-MICROSCOPE STUDIES OF AEROSOL LAYERS WITH LIKELY KUWAITI ORIGINS OVER LARAMIE, WYOMING DURING SPRING 1991.  Geophysical Research Letters. 389-392. 1992
  • ELECTRON-MICROSCOPE STUDIES OF MT-PINATUBO AEROSOL LAYERS OVER LARAMIE, WYOMING DURING SUMMER 1991.  Geophysical Research Letters. 203-206. 1992
  • DECREASE OF SUMMER TROPOSPHERIC OZONE CONCENTRATIONS IN ANTARCTICA.  Nature. 726-729. 1991
  • 3-WAVELENGTH NEPHELOMETER SUITABLE FOR AIRCRAFT MEASUREMENT OF BACKGROUND AEROSOL SCATTERING COEFFICIENT.  Atmospheric environment. 2267-2276. 1991
  • PREDICTING ATMOSPHERIC DEBRIS TRANSPORT IN REAL-TIME USING A TRAJECTORY FORECAST MODEL.  Atmospheric environment. 1705-1713. 1991
  • ARCTIC BOUNDARY-LAYER OZONE VARIATIONS ASSOCIATED WITH NITRATE, BROMINE, AND METEOROLOGY - A CASE-STUDY.  Journal of Geophysical Research: Atmospheres. 22433-22440. 1990
  • METEOROLOGY AND HAZE STRUCTURE DURING AGASP-II .1. ALASKAN ARCTIC FLIGHTS, 2-10 APRIL 1986.  Journal of Atmospheric Chemistry. 17-48. 1989
  • METEOROLOGY AND HAZE STRUCTURE DURING AGASP-II .2. CANADIAN ARCTIC FLIGHTS, 13-16 APRIL 1986.  Journal of Atmospheric Chemistry. 49-70. 1989
  • NOAA WP-3D INSTRUMENTATION AND FLIGHT OPERATIONS ON AGASP-II.  Journal of Atmospheric Chemistry. 3-16. 1989
  • LIDAR DETECTION OF LEADS IN ARCTIC SEA ICE.  Nature. 530-532. 1989
  • A MAJOR HAZE EVENT NEAR POINT BARROW, ALASKA - ANALYSIS OF PROBABLE SOURCE REGIONS AND TRANSPORT PATHWAYS.  Atmospheric Environment. 2537-2549. 1989
  • AEROSOL AND LIDAR MEASUREMENTS OF HAZES IN MID-LATITUDE AND POLAR AIR-MASSES.  Atmospheric Environment. 2417-2430. 1989
  • SEASONAL SURFACE OZONE AND FILTERABLE BROMINE RELATIONSHIP IN THE HIGH ARCTIC.  Atmospheric Environment. 2431-2441. 1989
  • SIZE DISTRIBUTION OF LARGE AEROSOL-PARTICLES DURING AGASP-II - ABSENCE OF ST AUGUSTINE ERUPTIVE PARTICLES IN THE ALASKAN ARCTIC.  Atmospheric Environment. 2495-2499. 1989
  • AEROSOL BLACK CARBON MEASUREMENTS AT THE SOUTH-POLE - INITIAL RESULTS, 1986-1987.  Geophysical Research Letters. 1193-1196. 1988
  • OZONE DESTRUCTION AND PHOTOCHEMICAL-REACTIONS AT POLAR SUNRISE IN THE LOWER ARCTIC ATMOSPHERE.  Nature. 138-141. 1988
  • AEROSOL AND OZONE DISTRIBUTIONS OVER THE WESTERN NORTH ATLANTIC DURING WATOX-86.  Global Biogeochemical Cycles: an international journal of global change. 23-39. 1988
  • IN-FLIGHT INTERCOMPARISONS OF SOME AIRCRAFT METEOROLOGICAL AND CHEMICAL MEASUREMENT TECHNIQUES.  Global Biogeochemical Cycles: an international journal of global change. 1-11. 1988
  • THE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION WP-3D METEOROLOGICAL, AEROSOL, AND GAS SYSTEMS, AND FLIGHT OPERATIONS, ON WATOX-86.  Global Biogeochemical Cycles: an international journal of global change. 297-307. 1987
  • AIR-MASS CHARACTERISTICS IN THE VICINITY OF BARROW, ALASKA, 9-19 MARCH 1983.  Atmospheric Environment. 2127-2134. 1985
  • ASSOCIATION OF AN ICE-NUCLEATING PSEUDOMONAD WITH CULTURES OF THE MARINE DINOFLAGELLATE, HETEROCAPSA-NIEI.  Journal of Marine Research. 257-265. 1985
  • INTRUSIONS OF STRATOSPHERIC AIR INTO ALASKA TROPOSPHERE, MARCH 1983.  Atmospheric Environment. 2153-2158. 1985
  • OBSERVATIONS OF ARCTIC HAZE DURING POLAR FLIGHTS FROM ALASKA TO NORWAY.  Atmospheric Environment. 2143-2151. 1985
  • PARTICULATE SULFUR AND CHLORINE IN ARCTIC AEROSOLS, SPRING 1983.  Atmospheric Environment. 2167-2173. 1985
  • THE DISTRIBUTION AND TRANSPORT OF POLLUTION AEROSOLS OVER THE NORWEGIAN ARCTIC ON 31 MARCH AND 4 APRIL 1983.  Atmospheric Environment. 2135-2142. 1985
  • AEROSOL DISTRIBUTIONS AND AN ARCTIC AEROSOL FRONT DURING AGASP - NORWEGIAN ARCTIC.  Geophysical Research Letters. 373-376. 1984
  • ARCTIC HAZE.  Geophysical Research Letters. 359-359. 1984
  • ARCTIC HAZE AND THE ARCTIC GAS AND AEROSOL SAMPLING PROGRAM (AGASP).  Geophysical Research Letters. 361-364. 1984
  • COARSE PARTICLE SOIL DUST IN ARCTIC AEROSOLS, SPRING 1983.  Geophysical Research Letters. 995-998. 1984
  • EL CHICHON VOLCANIC DEBRIS IN AN ARCTIC TROPOPAUSE FOLD.  Geophysical Research Letters. 421-424. 1984
  • VERTICAL AND HORIZONTAL CHARACTERISTICS OF ARCTIC HAZE DURING AGASP - ALASKAN ARCTIC.  Geophysical Research Letters. 369-372. 1984
  • AIRBORNE ICE NUCLEUS MEASUREMENTS AROUND THE HAWAIIAN-ISLANDS.  Journal of Geophysical Research: Oceans. 8886-8890. 1982
  • ICE NUCLEUS CHARACTERISTICS OF MOUNT ST-HELENS EFFLUENTS.  Journal of Geophysical Research: Oceans. 1109-1112. 1982
  • KENYAN TEA LITTER - A SOURCE OF ICE NUCLEI.  Tellus. 92-95. 1982
  • CARBON-DIOXIDE MEASUREMENTS IN TROPICAL EAST-AFRICAN BIOMES.  Journal of Geophysical Research: Oceans. 5364-5372. 1981
  • ICE NUCLEUS AND AEROSOL MEASUREMENTS IN THE PLUME OF THE JOHNSTOWN, PA, STEEL MILL.  Geophysical Research Letters. 397-400. 1980
  • AEROSOL AND ICE NUCLEI MEASUREMENTS IN THE PLUME OF THE HOMER-CITY, PA, POWER-PLANT.  Geophysical Research Letters. 371-374. 1979
  • ICE NUCLEI IN SEAWATER, FOG WATER AND MARINE AIR OFF COAST OF NOVA-SCOTIA - SUMMER 1975.  Journal of the Atmospheric Sciences. 1299-1305. 1977
  • AIRBORNE ICE NUCLEI NEAR AN ACTIVE VOLCANO.  Nature. 535-536. 1976
  • ATMOSPHERIC ICE NUCLEI - NO DETECTABLE EFFECTS FROM A COAL-FIRED POWERPLANT PLUME.  Geophysical Research Letters. 657-660. 1976
  • BACTERIA ACTING AS NATURAL ICE NUCLEANTS AT TEMPERATURE APPROACHING -1DEGREESC.  Bulletin of the American Meteorological Society. 1356-1357. 1976
  • BIOGENIC ICE NUCLEI .1. TERRESTRIAL AND MARINE SOURCES.  Journal of the Atmospheric Sciences. 1554-1564. 1976
  • BIOGENIC ICE NUCLEI .2. BACTERIAL SOURCES.  Journal of the Atmospheric Sciences. 1565-1570. 1976
  • FREEZING NUCLEI IN MARINE WATERS.  Tellus. 321-323. 1975
  • WORLD-WIDE SOURCE OF LEAF DERIVED FREEZING NUCLEI.  Nature. 212-213. 1973
  • ATMOSPHERIC ICE NUCLEI FROM DECOMPOSING VEGETATION.  Nature. 163-+. 1972