J
J. W. Hair
Researcher at Langley Research Center
Publications - 79
Citations - 3831
J. W. Hair is an academic researcher from Langley Research Center. The author has contributed to research in topics: Lidar & Aerosol. The author has an hindex of 28, co-authored 56 publications receiving 3038 citations.
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Journal ArticleDOI
The MERRA-2 Aerosol Reanalysis, 1980 Onward. Part I: System Description and Data Assimilation Evaluation
Cynthia A. Randles,A. da Silva,V. Buchard,V. Buchard,Peter R. Colarco,Anton Darmenov,R. Govindaraju,Alexander Smirnov,Brent N. Holben,R. A. Ferrare,J. W. Hair,Yohei Shinozuka,Connor Flynn +12 more
TL;DR: This first of a pair of studies documents the MERRA-2 aerosol assimilation, including a description of the prognostic model, aerosol emissions, and the quality control of ingested observations, and provides initial validation and evaluation of the analyzed AOD fields.
Journal ArticleDOI
Aerosol classification using airborne High Spectral Resolution Lidar measurements – methodology and examples
Sharon P. Burton,Richard Ferrare,Chris A. Hostetler,J. W. Hair,R. R. Rogers,Michael D. Obland,Carolyn F. Butler,A. L. Cook,David B. Harper,Karl D. Froyd +9 more
TL;DR: In this article, a methodology based on observations of known aerosol types is used to qualitatively classify the extensive set of airborne high-spectral resolution lidar measurements into eight separate types.
Journal ArticleDOI
Validation of Aura Microwave Limb Sounder stratospheric ozone measurements
Lucien Froidevaux,Yan Jiang,Alyn Lambert,Nathaniel J. Livesey,William G. Read,Joe W. Waters,Edward V. Browell,J. W. Hair,Melody A. Avery,T. J. McGee,Laurence Twigg,Grant Sumnicht,Kenneth W. Jucks,James J. Margitan,Bhaswar Sen,R. A. Stachnik,G. C. Toon,Peter F. Bernath,Peter F. Bernath,C. D. Boone,Kaley A. Walker,Kaley A. Walker,M. J. Filipiak,Robert S. Harwood,R. A. Fuller,Gloria L. Manney,Gloria L. Manney,Michael J. Schwartz,William H. Daffer,Brian J. Drouin,R. E. Cofield,D. T. Cuddy,Robert Jarnot,Brian Knosp,V. S. Perun,W. V. Snyder,P. C. Stek,R. P. Thurstans,P. A. Wagner +38 more
TL;DR: In this paper, the Earth Observing System (EOS) Microwave Limb Sounder (MLS) aboard the Aura satellite has provided essentially daily global measurements of ozone (O3) profiles from the upper troposphere to the upper mesosphere since August of 2004.
Journal ArticleDOI
The 2010 California Research at the Nexus of Air Quality and Climate Change (CalNex) field study
T. B. Ryerson,Arlyn E. Andrews,Wayne M. Angevine,Wayne M. Angevine,Timothy S. Bates,Charles A. Brock,Brian Cairns,Ronald C. Cohen,Owen R. Cooper,Owen R. Cooper,J. A. de Gouw,J. A. de Gouw,Fred C. Fehsenfeld,R. A. Ferrare,Marc Fischer,Richard C. Flagan,Allen H. Goldstein,J. W. Hair,R. M. Hardesty,Chris A. Hostetler,Jose L. Jimenez,Jose L. Jimenez,Andrew O. Langford,E. McCauley,Stuart A. McKeen,Stuart A. McKeen,Luisa T. Molina,Athanasios Nenes,Samuel J. Oltmans,David D. Parrish,J. Pederson,Robert B. Pierce,Kimberly A. Prather,Patricia K. Quinn,John H. Seinfeld,Christoph J. Senff,Christoph J. Senff,Armin Sorooshian,Jochen Stutz,Jason D. Surratt,Michael Trainer,Rainer Volkamer,Eric J. Williams,S. C. Wofsy +43 more
TL;DR: The California Research at the Nexus of Air Quality and Climate Change (CalNex) field study was conducted throughout California in May, June, and July of 2010 as discussed by the authors to address issues simultaneously relevant to atmospheric pollution and climate change, including emission inventory assessment, atmospheric transport and dispersion, atmospheric chemical processing, and cloud-aerosol interactions and aerosol radiative effects.
Journal ArticleDOI
Sources, seasonality, and trends of southeast US aerosol: an integrated analysis of surface, aircraft, and satellite observations with the GEOS-Chem chemical transport model
Patrick S. Kim,Daniel J. Jacob,Jenny A. Fisher,Katherine R. Travis,Karen Yu,Lei Zhu,Robert M. Yantosca,Melissa P. Sulprizio,Jose L. Jimenez,Jose L. Jimenez,Pedro Campuzano-Jost,Pedro Campuzano-Jost,Karl D. Froyd,Karl D. Froyd,Jin Liao,Jin Liao,J. W. Hair,Marta A. Fenn,Carolyn F. Butler,Nicholas L. Wagner,Nicholas L. Wagner,T. D. Gordon,T. D. Gordon,A. Welti,Paul O. Wennberg,John D. Crounse,J. M. St. Clair,J. M. St. Clair,J. M. St. Clair,Alex P. Teng,Dylan B. Millet,Joshua P. Schwarz,M. Z. Markovic,M. Z. Markovic,M. Z. Markovic,Anne E. Perring,Anne E. Perring +36 more
TL;DR: This article used an ensemble of surface (EPA CSN, IMPROVE, SEARCH, AERONET), aircraft (SEAC4RS), and satellite (MODIS, MISR) observations over the southeast US during the summer-fall of 2013 to better understand aerosol sources in the region and the relationship between surface particulate matter (PM) and aerosol optical depth (AOD).