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  • Author or Editor: E. W. Koenig x
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W. L. Smith
,
H. E. Revercomb
,
H. B. Howell
,
H-L. Huang
,
R. O. Knuteson
,
E. W. Koenig
,
D. D. LaPorte
,
S. Silverman
,
L. A. Sromovsky
, and
H. M. Woolf

Abstract

A high spectral resolution interferometer sounder (GHIS) has been designed for flight on future geostationary meteorological satellites. It incorporates the measurement principles of an aircraft prototype instrument, which has demonstrated the capability to observe the earth-emitted radiance spectrum with high accuracy. The aircraft results indicate that the theoretical expectation of 1°C temperature and 2°–3°C dewpoint retrieval accuracy will be achieved. The vertical resolution of the water vapor profile appears good enough to enable moisture tracking in numerous vertical layers thereby providing wind profile information as well as thermodynamic profiles of temperature and water vapor.

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G. A. Herbert
,
E. R. Green
,
J. M. Harris
,
G. L. Koenig
,
S. J. Roughton
, and
K. W. Thaut

Abstract

The NOAA/GMCC program was chartered to monitor the trends in those atmospheric constituents that can cause climate change. A four-observatory network was established, and a 15-year database has resulted for selected variables. At the inception, a central data-recording system was established at each observatory using minicomputers to compress and record the signals from monitoring instrumentation onto a computer-compatible magnetic tape. A distributed recording system using Z80 microprocessors has recently been developed to replace the minicomputer system. The STD BUS was selected as a means of internal computer communication, thus allowing a modular design that was tailored to the specific instrumentation. The resulting Control And Monitoring System (CAMS) operates an interactive multitasking version of FORTH as the operating system software. Separate versions of CAMS were built to control and monitor the carbon dioxide analyzer, aerosol and solar radiation instrumentation, and meteorological and surface ozone instrumentation. Subsequently, 20 CAMS were assembled and tested and deployed at the observatories. Early results show that CAMS recovers very well from power outages, resulting in minimum data losses. Furthermore, by distributing the system, it has been possible to reduce significantly electromagnetic noise pickup at the input. The quality of the recorded data is significantly improved in comparison with open-reel, computer-compatible tapes. All factors have contributed to better data quality.

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L. L. Pan
,
E. L. Atlas
,
R. J. Salawitch
,
S. B. Honomichl
,
J. F. Bresch
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W. J. Randel
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E. C. Apel
,
R. S. Hornbrook
,
A. J. Weinheimer
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D. C. Anderson
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S. J. Andrews
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S. Baidar
,
S. P. Beaton
,
T. L. Campos
,
L. J. Carpenter
,
D. Chen
,
B. Dix
,
V. Donets
,
S. R. Hall
,
T. F. Hanisco
,
C. R. Homeyer
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L. G. Huey
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J. B. Jensen
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L. Kaser
,
D. E. Kinnison
,
T. K. Koenig
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J.-F. Lamarque
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C. Liu
,
J. Luo
,
Z. J. Luo
,
D. D. Montzka
,
J. M. Nicely
,
R. B. Pierce
,
D. D. Riemer
,
T. Robinson
,
P. Romashkin
,
A. Saiz-Lopez
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S. Schauffler
,
O. Shieh
,
M. H. Stell
,
K. Ullmann
,
G. Vaughan
,
R. Volkamer
, and
G. Wolfe

Abstract

The Convective Transport of Active Species in the Tropics (CONTRAST) experiment was conducted from Guam (13.5°N, 144.8°E) during January–February 2014. Using the NSF/NCAR Gulfstream V research aircraft, the experiment investigated the photochemical environment over the tropical western Pacific (TWP) warm pool, a region of massive deep convection and the major pathway for air to enter the stratosphere during Northern Hemisphere (NH) winter. The new observations provide a wealth of information for quantifying the influence of convection on the vertical distributions of active species. The airborne in situ measurements up to 15-km altitude fill a significant gap by characterizing the abundance and altitude variation of a wide suite of trace gases. These measurements, together with observations of dynamical and microphysical parameters, provide significant new data for constraining and evaluating global chemistry–climate models. Measurements include precursor and product gas species of reactive halogen compounds that impact ozone in the upper troposphere/lower stratosphere. High-accuracy, in situ measurements of ozone obtained during CONTRAST quantify ozone concentration profiles in the upper troposphere, where previous observations from balloonborne ozonesondes were often near or below the limit of detection. CONTRAST was one of the three coordinated experiments to observe the TWP during January–February 2014. Together, CONTRAST, Airborne Tropical Tropopause Experiment (ATTREX), and Coordinated Airborne Studies in the Tropics (CAST), using complementary capabilities of the three aircraft platforms as well as ground-based instrumentation, provide a comprehensive quantification of the regional distribution and vertical structure of natural and pollutant trace gases in the TWP during NH winter, from the oceanic boundary to the lower stratosphere.

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