William Swartz Print


  88462

  Bill.Swartz@jhuapl.edu

: SES

:   Atmospheric scientist; Principal Investigator

:  Earth, Heliophysics

  Aura, OMI, MSX, UVISI, RAVAN, TIMED, SEE

 
2002, PhD in Atmospheric chemistry, University of Maryland, College Park
1993, AM in Organic chemistry, Harvard University
1991, BS in Chemistry, University of Maryland, College Park

I have been active in atmospheric science since 1995 and have broad research experience in modeling/analysis, space mission development, field measurement, and laboratory experimentation.  My background includes instrument development (ground-based, aircraft, and satellite-borne), in situ field measurement (ground-based and aircraft) using both optical and chemical techniques, and radiative transfer and photochemical modeling.  I have helped develop retrieval techniques using aircraft and satellite ultraviolet and visible spectra for the remote sensing of atmospheric composition.  I have participated in more than a dozen ground-based and aircraft field and satellite missions, including Aura validation experiments, NASA ER-2/DC-8 missions, TIMED, MSX/UVISI, Aura/OMI, and RAVAN.  I am presently Principal Investigator of a CubeSat mission to measure Earth’s radiation budget, the Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN); I am studying solar cycle effects and tropospheric chemistry with the Goddard Earth Observing System Chemistry–Climate Model; and I am part of a NASA-led team developing improved tropospheric NO2 retrievals using Aura/OMI.  Since 2012 I have also been serving in line management at APL as an assistant group supervisor, where I am involved in group-level strategic planning, resource allocation and acquisition, and staff development.

Since 2015 I have held a joint appointment as associate research professor in the Johns Hopkins University Earth and Planetary Sciences department, where I foster cross-divisional collaborative research between APL and the JHU Homewood campus.

Since 2012 I have been a member of JHU’s Engineering for Professionals faculty, where I developed and have co-taught a course in atmospheric chemistry and physics. 

 
AGU Index Category AGU Index Sub-Category
GLOBAL CHANGE Remote sensing
ATMOSPHERIC COMPOSITION AND STRUCTURE Middle atmosphere: composition and chemistry
ATMOSPHERIC COMPOSITION AND STRUCTURE Pollution: urban and regional
GLOBAL CHANGE Solar variability
GLOBAL CHANGE Earth system modeling
ATMOSPHERIC COMPOSITION AND STRUCTURE Radiation: transmission and scattering
ATMOSPHERIC COMPOSITION AND STRUCTURE Chemical kinetic and photochemical properties
ATMOSPHERIC COMPOSITION AND STRUCTURE Troposphere: composition and chemistry
ATMOSPHERIC COMPOSITION AND STRUCTURE Volcanic effects
ATMOSPHERIC COMPOSITION AND STRUCTURE Instruments and techniques
:
1994 - Present
Principal Professional Staff (since 2015), Johns Hopkins University Applied Physics Laboratory
2015 - 2016
Member, NRC Committee on Achieving Science Goals with CubeSats
1995 - Present
American Geophysical Union
1997 - Present
American Meteorological Society
1990 - Present
American Chemistry Society
2015–2016: APL Sabbatical fellowship
2014: APL Outstanding paper award
2000, 2004: APL Publication fellowships
1998, 2001, 2004, 2008: NASA Science team group achievement awards
:
The following publication information was downloaded from http://www.researcherId.com/rid/A-1965-2010. Click on the publication title to view details.
Isolating the roles of different forcing agents in global stratospheric temperature changes using model integrations with incrementally added single forcings
:   Aquila, V.; Swartz, W. H.; Waugh, D. W.; Colarco, P. R.; Pawson, S.; Polvani, L. M.; Stolarski, R. S.
:JUL 16 2016
: Journal of Geophysical Research-Atmospheres
  121
  8067
  8082
: WOS:000380730500034
: None
Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2015
:   Krotkov, Nickolay A.; McLinden, Chris A.; Li, Can; Lamsal, Lok N.; Celarier, Edward A.; Marchenko, Sergey V.; Swartz, William H.; Bucsela, Eric J.; Joiner, Joanna; Duncan, Bryan N.; Boersma, K. Folkert; Veefkind, J. Pepijn; Levelt, Pieternel F.; Fioletov, Vitali E.; Dickerson, Russell R.; He, Hao; Lu, Zifeng; Streets, David G.
:2016
: Atmospheric Chemistry and Physics
  16
  4605
  4629
: WOS:000374703000024
: None
Diagnosis of Middle-Atmosphere Climate Sensitivity by the Climate Feedback-Response Analysis Method
:   Zhu, Xun; Yee, Jeng-Hwa; Cai, Ming; Swartz, William H.; Coy, Lawrence; Aquila, Valentina; Garcia, Rolando; Talaat, Elsayed R.
:JAN 2016
: Journal of the Atmospheric Sciences
  73
  3
  23
: WOS:000367396700001
: None
The impact of current CH4 and N2O atmospheric loss process uncertainties on calculated ozone abundances and trends
:   Fleming, Eric L.; George, Christian; Heard, Dwayne E.; Jackman, Charles H.; Kurylo, Michael J.; Mellouki, Wahid; Orkin, Vladimir L.; Swartz, William H.; Wallington, Timothy J.; Wine, Paul H.; Burkholder, James B.
:MAY 27 2015
: Journal of Geophysical Research-Atmospheres
  120
  5267
  5293
: WOS:000356696800045
: None
Revising the slant column density retrieval of nitrogen dioxide observed by the Ozone Monitoring Instrument
:   Marchenko, S.; Krotkov, N. A.; Lamsal, L. N.; Celarier, E. A.; Swartz, W. H.; Bucsela, E. J.
:JUN 16 2015
: Journal of Geophysical Research-Atmospheres
  120
  5670
  5692
: WOS:000356975700023
: None
Evaluation of OMI operational standard NO2 column retrievals using in situ and surface-based NO2 observations
:   Lamsal, L. N.; Krotkov, N. A.; Celarier, E. A.; Swartz, W. H.; Pickering, K. E.; Bucsela, E. J.; Gleason, J. F.; Martin, R. V.; Philip, S.; Irie, H.; Cede, A.; Herman, J.; Weinheimer, A.; Szykman, J. J.; Knepp, T. N.
:2014
: Atmospheric Chemistry and Physics
  14
  11587
  11609
: WOS:000344985700004
: None
The use of NO2 absorption cross section temperature sensitivity to derive NO2 profile temperature and stratospheric-tropospheric column partitioning from visible direct-sun DOAS measurements
:   Spinei, E.; Cede, A.; Swartz, W. H.; Herman, J.; Mount, G. H.
:2014
: Atmospheric Measurement Techniques
  7
  4299
  4316
: WOS:000352290900005
: None
A new stratospheric and tropospheric NO2 retrieval algorithm for nadir-viewing satellite instruments: applications to OMI
:   Bucsela, E. J.; Krotkov, N. A.; Celarier, E. A.; Lamsal, L. N.; Swartz, W. H.; Bhartia, P. K.; Boersma, K. F.; Veefkind, J. P.; Gleason, J. F.; Pickering, K. E.
:2013
: Atmospheric Measurement Techniques
  6
  2607
  2626
: WOS:000326547100006
: None
The Global Assimilation of Information for Action (GAIA) Initiative: Understanding the Impact of Climate Change on National Security and Public Health
:   Strong, Shadrian B.; Paxton, Larry J.; Kaushiva, Alpana; Nix, Maegen; Swartz, William H.; Weiss, Michele B.; Schaefer, Robert; Kolk, AHJ; Southern, SO; Montgomery, KN; Taylor, CW; Kumar, BVKV; Prabhakar, S; Ross, AA
:2012
: Sensing Technologies For Global Health, Military Medicine, Disaster Response, and Environmental Monitoring Ii: and Biometric Technology For Human Identification Ix
  8371
  --
  --
: WOS:000305799000014
: None
Middle atmosphere response to different descriptions of the 11-yr solar cycle in spectral irradiance in a chemistry-climate model
:   Swartz, W. H.; Stolarski, R. S.; Oman, L. D.; Fleming, E. L.; Jackman, C. H.
:2012
: Atmospheric Chemistry and Physics
  12
  5937
  5948
: WOS:000306366500016
: None
Comments on "A Spectral Parameterization of Drag, Eddy Diffusion, and Wave Heating for a Three-Dimensional Flow Induced by Breaking Gravity Waves" Reply
:   Zhu, Xun; Yee, Jeng-Hwa; Swartz, William H.; Talaat, Elsayed R.
:OCT 2011
: Journal of the Atmospheric Sciences
  68
  2470
  2477
: WOS:000296034700020
: None
A Spectral Parameterization of Drag, Eddy Diffusion, and Wave Heating for a Three-Dimensional Flow Induced by Breaking Gravity Waves
:   Zhu, Xun; Yee, Jeng-Hwa; Swartz, William H.; Talaat, Elsayed R.; Coy, Lawrence
:AUG 2010
: Journal of the Atmospheric Sciences
  67
  2520
  2536
: WOS:000281498100007
: None
Heating rates and surface dimming due to black carbon aerosol absorption associated with a major US city
:   SCHWARZ, JP; STARK, H; SPACKMAN, JR; RYERSON, TB; PEISCHL, J; SWARTZ, WH; GAO, RS; WATTS, LA; FAHEY, DW
:2009
: GEOPHYSICAL RESEARCH LETTERS
  36
  --
  --
: WOS:000268819400007
: None
Calculations of solar shortwave heating rates due to black carbon and ozone absorption using in situ measurements
:   GAO, RS; HALL, SR; SWARTZ, WH; SCHWARZ, JP; SPACKMAN, JR; WATTS, LA; FAHEY, DW; AIKIN, KC; SHETTER, RE; BUI, TP
:2008
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  113
  --
  --
: WOS:000257798200002
: None
Measurements of trace gases in the tropical tropopause layer
:   MARCY, TP; POPP, PJ; GAO, RS; FAHEY, DW; RAY, EA; RICHARD, EC; THOMPSON, TL; ATLAS, EL; LOEWENSTEIN, M; WOFSY, SC; PARK, S; WEINSTOCK, EM; SWARTZ, WH; MAHONEY, MJ
:2007
: ATMOSPHERIC ENVIRONMENT
  41
  7253
  7261
: WOS:000250932500009
: None
Ozone observations by the Gas and Aerosol Measurement Sensor during SOLVE II
:   PITTS, MC; THOMASON, LW; ZAWODNY, JM; WENNY, BN; LIVINGSTON, JM; RUSSELL, PB; YEE, JH; SWARTZ, WH; SHETTER, RE
:JUL 6 2006
: ATMOSPHERIC CHEMISTRY AND PHYSICS
  6
  2695
  2709
: WOS:000238824200002
: None
Comparison of high-latitude line-of-sight ozone column density with derived ozone fields and the effects of horizontal inhomogeneity
:   SWARTZ, WH; YEE, JH; RANDALL, CE; SHETTER, RE; BROWELL, EV; BURRIS, JF; MCGEE, TJ; AVERY, MA
:MAY 29 2006
: ATMOSPHERIC CHEMISTRY AND PHYSICS
  6
  1843
  1852
: WOS:000237845600005
: None
Retrieval of ozone column content from airborne Sun photometer measurements during SOLVE II: comparison with coincident satellite and aircraft measurements
:   LIVINGSTON, JM; SCHMID, B; RUSSELL, PB; EILERS, JA; KOLYER, RW; REDEMANN, J; RAMIREZ, SA; YEE, JH; SWARTZ, WH; TREPTE, CR; THOMASON, LW; PITTS, MC; AVERY, MA; RANDALL, CE; LUMPE, JD; BEVILACQUA, RM; BITTNER, M; ERBERTSEDER, T; MCPETERS, RD; SHETTER, RE; BROWELL, EV; KERR, JB; LAMB, K
:AUG 8 2005
: ATMOSPHERIC CHEMISTRY AND PHYSICS
  5
  2035
  2054
: WOS:000231156300001
: None
Aerosol optical depth measurements by airborne sun photometer in SOLVE II: Comparisons to SAGE III, POAM III and airborne spectrometer measurements
:   Russell, P; Livingston, J; Schmid, B; Eilers, J; Kolyer, R; Redemann, J; Ramirez, S; Yee, JH; Swartz, W; Shetter, R; Trepte, C; Risley, A; Wenny, B; Zawodny, J; Chu, W; Pitts, M; Lumpe, J; Fromm, M; Randall, C; Hoppel, K; Bevilacqua, R
:JUN 1 2005
: Atmospheric Chemistry and Physics
  5
  1311
  1339
: WOS:000229493400003
: None
Column ozone and aerosol optical properties retrieved from direct solar irradiance measurements during SOLVE II
:   SWARTZ, WH; YEE, JH; SHETTER, RE; HALL, SR; LEFER, BL; LIVINGSTON, JM; RUSSELL, PB; BROWELL, EV; AVERY, MA
:MAR 1 2005
: ATMOSPHERIC CHEMISTRY AND PHYSICS
  5
  611
  622
: WOS:000227316300001
: None
Molecular velocity distributions and generalized scale invariance in the turbulent atmosphere
:   TUCK, AF; HOVDE, SJ; RICHARD, EC; GAO, RS; BUI, TP; SWARTZ, WH; LLOYD, SA
:2005
: FARADAY DISCUSSIONS
  130
  181
  193
: WOS:000231804100011
: None
Photolysis frequency of O-3 to O(D-1): Measurements and modeling during the International Photolysis Frequency Measurement and Modeling Intercomparison (IPMMI)
:   HOFZUMAHAUS, A; LEFER, BL; MONKS, PS; HALL, SR; KYLLING, A; MAYER, B; SHETTER, RE; JUNKERMANN, W; BAIS, A; CALVERT, JG; CANTRELL, CA; MADRONICH, S; EDWARDS, GD; KRAUS, A; MULLER, M; BOHN, B; SCHMITT, R; JOHNSTON, P; MCKENZIE, R; FROST, GJ; GRIFFIOEN, E; KROL, M; MARTIN, T; PFISTER, G; ROTH, EP; RUGGABER, A; SWARTZ, WH; LLOYD, SA; VAN WEELE, M
:APR 24 2004
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  109
  --
  --
: WOS:000221086500001
: None
International Photolysis Frequency Measurement and Model Intercomparison (IPMMI): Spectral actinic solar flux measurements and modeling
:   BAIS, AF; MADRONICH, S; CRAWFORD, J; HALL, SR; MAYER, B; VAN WEELE, M; LENOBLE, J; CALVERT, JG; CANTRELL, CA; SHETTER, RE; HOFZUMAHAUS, A; KOEPKE, P; MONKS, PS; FROST, G; MCKENZIE, R; KROTKOV, N; KYLLING, A; SWARTZ, WH; LLOYD, S; PFISTER, G; MARTIN, TJ; ROETH, EP; GRIFFIOEN, E; RUGGABER, A; KROL, M; KRAUS, A; EDWARDS, GD; MUELLER, M; LEFER, BL; JOHNSTON, P; SCHWANDER, H; FLITTNER, D; GARDINER, BG; BARRICK, J; SCHMITT, R
:JUL 17 2003
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  108
  --
  --
: WOS:000184604300001
: None
Photolysis frequency of NO2: Measurement and modeling during the International Photolysis Frequency Measurement and Modeling Intercomparison (IPMMI)
:   SHETTER, RE; JUNKERMANN, W; SWARTZ, WH; FROST, GJ; CRAWFORD, JH; LEFER, BL; BARRICK, JD; HALL, SR; HOFZUMAHAUS, A; BAIS, A; CALVERT, JG; CANTRELL, CA; MADRONICH, S; MULLER, M; KRAUS, A; MONKS, PS; EDWARDS, GD; MCKENZIE, R; JOHNSTON, P; SCHMITT, R; GRIFFIOEN, E; KROL, M; KYLLING, A; DICKERSON, RR; LLOYD, SA; MARTIN, T; GARDINER, B; MAYER, B; PFISTER, G; ROTH, EP; KOEPKE, P; RUGGABER, A; SCHWANDER, H; VAN WEELE, M
:JUN 3 2003
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  108
  --
  --
: WOS:000183555600001
: None
Intercomparison of MSX/UVISI-derived ozone and temperature profiles with ground-based, SAGE II, HALOE, and POAM III data
:   VERVACK, RJ; YEE, JH; DEMAJISTRE, R; SWARTZ, WH
:NOV 21 2003
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  108
  --
  --
: WOS:000186898700007
: None
Reconstruction of three-dimensional ozone fields using POAM III during SOLVE
:   RANDALL, CE; LUMPE, JD; BEVILACQUA, RM; HOPPEL, KW; FROMM, MD; SALAWITCH, RJ; SWARTZ, WH; LLOYD, SA; KYRO, E; VON DER GATHEN, P; CLAUDE, H; DAVIES, J; DEBACKER, H; DIER, H; MOLYNEUX, MJ; SANCHO, J
:SEP-OCT 2002
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  107
  --
  --
: WOS:000180466200104
: None
Photochemical ozone loss in the Arctic as determined by MSX/UVISI stellar occultation observations during the 1999/2000 winter
:   SWARTZ, WH; YEE, JH; VERVACK, RJ; LLOYD, SA; NEWMAN, PA
:2002
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  107
  --
  --
: WOS:000180466200093
: None
Jno(2) at high solar zenith angles in the lower stratosphere
:   GAO, RS; DEL NEGRO, LA; SWARTZ, WH; SALAWITCH, RJ; LLOYD, SA; PROFFITT, MH; FAHEY, DW; DONNELLY, SG; NEUMAN, JA; STIMPFLE, RM; BUI, TP
:JUN 15 2001
: GEOPHYSICAL RESEARCH LETTERS
  28
  2405
  2408
: WOS:000171008500029
: None
Ozone destruction and production rates between spring and autumn in the Arctic stratosphere
:   FAHEY, DW; GAO, RS; DEL NEGRO, LA; KEIM, ER; KAWA, SR; SALAWITCH, RJ; WENNBERG, PO; HANISCO, TF; LANZENDORF, EJ; PERKINS, KK; LLOYD, SA; SWARTZ, WH; PROFFITT, MH; MARGITAN, JJ; WILSON, JC; STIMPFLE, RM; COHEN, RC; MCELROY, CT; WEBSTER, CR; LOEWENSTEIN, M; ELKINS, JW; BUI, TP
:SEP 1 2000
: GEOPHYSICAL RESEARCH LETTERS
  27
  2605
  2608
: WOS:000089254700005
: None
Comparison of modeled and observed values of NO2 and JNO(2) during the Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) mission
:   DEL NEGRO, LA; FAHEY, DW; GAO, RS; DONNELLY, SG; KEIM, ER; NEUMAN, JA; COHEN, RC; PERKINS, KK; KOCH, LC; SALAWITCH, RJ; LLOYD, SA; PROFFITT, MH; MARGITAN, JJ; STIMPFLE, RM; BONNE, GP; VOSS, PB; WENNBERG, PO; MCELROY, CT; SWARTZ, WH; KUSTERER, TL; ANDERSON, DE; LAIT, LR; BUI, TP
:NOV 20 1999
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  104
  26687
  26703
: WOS:000083781200040
: None
Intercomparison of total ozone observations at Fairbanks, Alaska, during POLARIS
:   LLOYD, S; SWARTZ, WH; KUSTERER, T; ANDERSON, D; MCELROY, CT; MIDWINTER, C; HALL, R; NASSIM, K; JAFFE, D; SIMPSON, W; KELLEY, J; NICKS, D; GRIFFIN, D; JOHNSON, B; EVANS, R; QUINCY, D; OLTMANS, S; NEWMAN, P; MCPETERS, R; LABOW, G; MOY, L; SEFTOR, C; TOON, G; SEN, B; BLAVIER, JF
:NOV 20 1999
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  104
  26767
  26778
: WOS:000083781200046
: None
A sensitivity study of photolysis rate coefficients during POLARIS
:   SWARTZ, WH; LLOYD, SA; KUSTERER, TL; ANDERSON, DE; MCELROY, CT; MIDWINTER, C
:NOV 20 1999
: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
  104
  26725
  26735
: WOS:000083781200043
: None
Twilight observations suggest unknown sources of HOx
:   WENNBERG, PO; SALAWITCH, RJ; DONALDSON, DJ; HANISCO, TF; LANZENDORF, EJ; PERKINS, KK; LLOYD, SA; VAIDA, V; GAO, RS; HINTSA, EJ; COHEN, RC; SWARTZ, WH; KUSTERER, TL; ANDERSON, DE
:1999
: GEOPHYSICAL RESEARCH LETTERS
  26
  1373
  1376
: WOS:000080374500008
: None
EXPLORATORY STUDIES OF ALPHA-SILYLAMINO AND ALPHA-SILYLAMIDO 2,5-CYCLOHEXADIEN-1-ONE SET PHOTOCHEMISTRY - METHODOLOGY FOR SYNTHESIS OF FUNCTIONALIZED HYDROISOQUINOLINES
:   JUNG, YS; SWARTZ, WH; XU, W; MARIANO, PS; GREEN, NJ; SCHULTZ, AG
:OCT 23 1992
: JOURNAL OF ORGANIC CHEMISTRY
  57
  6037
  6047
: WOS:A1992JV47100046
: None
STEREOCHEMICAL PROBE FOR THE MECHANISM OF P-C BOND-CLEAVAGE CATALYZED BY THE BACILLUS-CEREUS PHOSPHONOACETALDEHYDE HYDROLASE
:   LEE, SL; HEPBURN, TW; SWARTZ, WH; AMMON, HL; MARIANO, PS; DUNAWAYMARIANO, D
:SEP 9 1992
: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  114
  7346
  7354
: WOS:A1992JM97900003
: None
EVIDENCE FOR AN INTRAMOLECULAR, STEPWISE REACTION PATHWAY FOR PEP PHOSPHOMUTASE CATALYZED P-C BOND FORMATION
:   MCQUENEY, MS; LEE, SL; SWARTZ, WH; AMMON, HL; MARIANO, PS; DUNAWAYMARIANO, D
:DEC 6 1991
: JOURNAL OF ORGANIC CHEMISTRY
  56
  7121
  7130
: WOS:A1991GU97400031
: None
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