UTLS Water Vapor and Ozone Measurements in Kunming during Asian Summer Monsoon

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UTLS Water Vapor and Ozone Measurements in
Kunming during Asian Summer Monsoon
Jianchun BIAN, and Hongbin CHEN LAGEO, Institute
of Atmospheric Physics, Chinese Academy of
Sciences Holger Vömel GRUAN Lead Center,
Meteorologisches Observatorium Lindenberg, German
Weather Service Laura Pan ACD/NCAR
bjc_at_mail.iap.ac.cn UTLS Workshop, Boulder,
2009-09-21
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• Outlines
• Overview
• Large scale conditions
• Profiles
• Summary

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Overview

• Asian anticyclone is the dominant circulation
  feature in the UTLS during NH summer. Asian
  monsoon is a critical factor in the global
  troposphere-to-stratosphere transport. It has
  significant impact on UTLS water vapor budget ,
  and is also an efficient transport pathway for
  anthropogenic emissions to get into the
  stratosphere 
• Many studies used satellite data and models,
  which do not provide enough details for
  characterizing the transport process. There is a
  debate on the roles of convective and synoptic
  processes in the TST of water vapor
• We are presenting the first in situ measurements
  of ozone/water vapor inside the anticyclone, the
  data providing information on the structure and
  strength of the circulation, complements the
  large scale satellite observations

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Kunming (25.01ºN, 102.65ºE, 1.889 km)
H
Launch site
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Westerly
Easterly
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Participants

• Institute of Atmospheric Physics, CAS
• Chinese Academy of Meteorological Sciences
• Kunming Climate Observatory, CMA
• Holger Vömel
• ACD/NCAR

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Instruments
CFH H2O
RS80 T, RH, P
GPS wind
ECC O3 sonde O3
L-Band T, RH, P, wind for intercomparison
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Summary of sounding information (Aug 7-13,
2009) A total of eleven soundings were launched.
) Sondes launched on the same balloon A and H
demote the Vaisala humicap sensor type of RS80,
A-humicap and H-humicap, respectively.
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Height at 100 hPa during Aug 6-13, 2009
Asian High center moved westward
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Main outflow at so high level?
O3 35 ppbH2O 2.0 ppmCPT -80.89ºCBoth
extremely low value near 100mb !!!
Positive Correlation
0.03
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70mb
Super-saturationMulti-layer
Due to sub-cell in the neighborhood of Tibet
Plateau?
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RH
70mb
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O3
H2O
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O3
0.04
H2O
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Summary

• For the first time, H2O and O3 in UTLS were
  measured during Asian summer monsoon
• Some preliminary analysis
• some finer and interesting structures
• super-saturation and multi-layer in UT
• Much more further analysis combined with
  satellite data and trajectory model is under way

Comments and suggestions are welcome! Thank you
very much!
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