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An aircraft‐based upper troposphere lower stratosphere O3, CO, and H2O climatology for the Northern Hemisphere

Tilmes, S. and Pan, L. L. and Hoor, P. and Atlas, E. and Avery, M. A. and Campos, T. and Christensen, L. E. and Diskin, G. S. and Gao, R.-S. and Herman, R. L. and Hintsa, E. J. and Loewenstein, M. and Lopez, J. and Paige, M. E. and Pittman, J. V. and Podolske , J. R. and Proffitt, M. R. and Sachse, G. W. and Schiller, C. and Schlager, H. and Smith, J. and Spelten, N. and Webster, C. and Weinheimer, A. and Zondlo, M. A. (2010) An aircraft‐based upper troposphere lower stratosphere O3, CO, and H2O climatology for the Northern Hemisphere. Journal of Geophysical Research, 115 (D14303), pp. 1-16. DOI: 10.1029/2009JD012731.

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Abstract

We present a climatology of O3, CO, and H2O for the upper troposphere and lower stratosphere (UTLS), based on a large collection of high-resolution research aircraft data taken between 1995 and 2008. To group aircraft observations with sparse horizontal coverage, the UTLS is divided into three regimes: the tropics, subtropics, and the polar region. These regimes are defined using a set of simple criteria based on tropopause height and multiple tropopause conditions. Tropopause-referenced tracer profiles and tracer-tracer correlations show distinct characteristics for each regime, which reflect the underlying transport processes. The UTLS climatology derived here shows many features of earlier climatologies. In addition, mixed air masses in the subtropics, identified by O3-CO correlations, show two characteristic modes in the tracer-tracer space that are a result of mixed air masses in layers above and below the tropopause (TP). A thin layer of mixed air (1–2 km around the tropopause) is identified for all regions and seasons, where tracer gradients across the TP are largest. The most pronounced influence of mixing between the tropical transition layer and the subtropics was found in spring and summer in the region above 380 K potential temperature. The vertical extent of mixed air masses between UT and LS reaches up to 5 km above the TP. The tracer correlations and distributions in the UTLS derived here can serve as a reference for model and satellite data evaluation.

Document Type:Article
Title:An aircraft‐based upper troposphere lower stratosphere O3, CO, and H2O climatology for the Northern Hemisphere
Authors:
AuthorsInstitution or Email of Authors
Tilmes, S.NCAR, Boulder, CO, USA
Pan, L. L.NCAR, Boulder, CO, USA
Hoor, P.Univ. Mainz, Mainz
Atlas, E. Univ. of Miami, FL, USA
Avery, M. A. NASA Ames Research Center, Moffett Field, CA, USA
Campos, T. NCAR, Boulder, CO,
Christensen, L. E. Jet Propulsion Lab., Pasadena, CA, USA
Diskin, G. S. NASA Ames Research Center, Moffett Field, CA, USA
Gao, R.-S. NOAA, Boulder, CO, USA
Herman, R. L. Jet Propulsion Lab., Pasadena, CA, USA
Hintsa, E. J. Univ., Cambridge, MA, USA
Loewenstein, M. NASA Ames Research Center, Moffett Field, CA, USA
Lopez, J. NASA Ames Research Center, Moffett Field, CA, USA
Paige, M. E. Southwest Sciences, Santa Fe, NM, USA
Pittman, J. V. NCAR, Boulder, CO, USA
Podolske , J. R. NASA Ames Research Center, Moffett Field, CA, USA
Proffitt, M. R. Proffitt Instruments, Austin, TX, USA
Sachse, G. W. NASA Ames Research Center, Moffett Field, CA, USA
Schiller, C. FZ Jülich
Schlager, H. DLR
Smith, J. Havard Univ., Cambridge, MA, USA
Spelten, N. FZ Jülich
Webster, C. Jet Propulsion Lab., Pasadena, CA, USA
Weinheimer, A. NCAR, Boulder, CO, USA
Zondlo, M. A. Princeton Univ., NJ, USA
Date:22 July 2010
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:115
DOI:10.1029/2009JD012731
Page Range:pp. 1-16
Status:Published
Keywords:upper troposphere, lower stratosphere, trace gas climatology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Yasemin Yilmaz
Deposited On:10 Dec 2010 10:50
Last Modified:23 Jan 2014 11:36

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