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AGU: Geophysical Research Letters

 

Index Terms

  • Atmospheric Composition and Structure: Constituent sources and sinks
  • Atmospheric Composition and Structure: Pollution: urban and regional
  • Atmospheric Composition and Structure: Troposphere: composition and chemistry

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 32, L11810, 4 PP., 2005
doi:10.1029/2005GL022770

Evaluation of long-term tropospheric NO2 data obtained by GOME over East Asia in 1996–2002

H. Irie

Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

K. Sudo

Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

H. Akimoto

Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

A. Richter

Institute of Environmental Physics, University of Bremen, Bremen, Germany

J. P. Burrows

Institute of Environmental Physics, University of Bremen, Bremen, Germany

T. Wagner

Institut für Umweltphysik, Heidelberg University, Heidelberg, Germany

M. Wenig

NASA Goddard Space Flight Center, Atmospheric Chemistry and Dynamics Branch, Greenbelt, Maryland, USA

S. Beirle

Institut für Umweltphysik, Heidelberg University, Heidelberg, Germany

Y. Kondo

Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan

V. P. Sinyakov

Kyrgyz National University, Bishkek, Kyrgyzstan

F. Goutail

Service d'Aéronomie du CNRS, Verrières le Buisson, France

Long-term tropospheric nitrogen dioxide (NO2) column data obtained by the Global Ozone Monitoring Experiment (GOME) (G-NO2) are evaluated to confirm the trends found in tropospheric NO2 abundances over East Asia between 1996 and 2002. For three locations in Central and East Asia, the G-NO2 values are compared with tropospheric columns estimated from coincident observations of total NO2 by ground-based UV/visible spectrometers and stratospheric NO2 by satellite solar occultation sensors (E-NO2). The comparisons show a slight linear drift in G-NO2 data from 1996 to 2002. However, it is much smaller than the standard deviation of the differences between G-NO2 and E-NO2 and much smaller than the increasing trends in NO2 seen by GOME over the industrial areas of China, demonstrating the validity of the trends estimated using the GOME data.

Received 21 February 2005; accepted 16 May 2005; published 14 June 2005.

Citation: Irie, H., et al. (2005), Evaluation of long-term tropospheric NO2 data obtained by GOME over East Asia in 1996–2002, Geophys. Res. Lett., 32, L11810, doi:10.1029/2005GL022770.

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