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Tropospheric Ozone Over the North Pacific From Ozonesonde Observations Sam Oltmans J.M. Harris, B.J....
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Transcript of Tropospheric Ozone Over the North Pacific From Ozonesonde Observations Sam Oltmans J.M. Harris, B.J....
![Page 1: Tropospheric Ozone Over the North Pacific From Ozonesonde Observations Sam Oltmans J.M. Harris, B.J. Johnson, A.M. Thompson, C.Y. Chan, H.Y. Liu, T. Fujimoto,](https://reader035.fdocuments.us/reader035/viewer/2022062807/5697bffb1a28abf838cc1322/html5/thumbnails/1.jpg)
Tropospheric Ozone Over the North Pacific From Ozonesonde Observations
Sam Oltmans
J.M. Harris, B.J. Johnson, A.M. Thompson, C.Y. Chan, H.Y. Liu, T. Fujimoto, V.G. Brackett, W.L. Chang,
J.-P. Chen, J.-W. Kim, L.Y Chan, H.-W. Chang
NOAA Climate Monitoring and Diagnostics Laboratory
Boulder, Colorado
TRACE-P Workshop
June 24-26, 2002
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Ozonesonde Stations Operating During TRACE-P
Station Latitude Longitude Observations
Hilo, Hawaii 19.4oN 155.4oW 1991-present
Hong Kong, China 22.2oN 114.3oE 1993-present
Taipei, Taiwan 25.0oN 121.4oE 2000-2001
Naha, Japan 26.2oN 127.7oE 1991-present
Kagoshima, Japan 31.6oN 130.6oE 1991-present
Cheju Island, Korea 33.5oN 126.5oE 2001
Tateno, Japan 36.1oN 140.1oE 1991-present
Trinidad Head, Calif. 40.8oN 124.2oW 1997-present
Sapporo, Japan 43.1oN 141.3oE 1991-present
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Topics Covered
1. Climatology of tropospheric ozone over the North Pacific.
2. Ozone during the TRACE-P period (February – April 2001).
3. Comparison of the February – April 2001 period with longer term averages for these months.
4. Individual profiles.
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Average Ozone Mixing Ratio at Hong Kong (23N) and Taipei (25N) for February – April 2001
Hong Kong Taipei
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Ozone Mixing Ratio at Hong Kong (23N) on March 27, 2001 at 0518 GMT
Trajectory at 3 km on March 27
Solid Line = 00 GMT Dashed Line = 12 GMT
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Ozone Mixing Ratio at Hong Kong (23N) on March 27, 2001 at 0518 GMT
Trajectory at 10 km on March 27
Solid Line = 00 GMT Dashed Line = 12 GMT
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Ozone Mixing Ratio at Hong Kong (23N) on March 27, 2001 at 0518 GMT
Trajectory at 13 km on March 27
Solid Line = 00 GMT Dashed Line = 12 GMT
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Ozone Mixing Ratio at Hong Kong (23N) on March 16, 2001 at 0539 GMTand Taipei (25N) on March 16, 2001 at 0700 GMT
Hong Kong Taipei
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Ozone Mixing Ratio at Hong Kong (23N) on March 16, 2001 at 0539 GMT Trajectory at 9 km on March 16
Solid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Hong Kong on March 16, 2001 at 00 and 12 GMT at 1 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Hong Kong on March 16, 2001 at 00 and 12 GMT at 4 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Hong Kong on March 16, 2001 at 00 and 12 GMT at 9 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Hong Kong on March 16, 2001 at 00 and 12 GMT at 13 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Taipei on March 16, 2001 at 00 and 12 GMT at 0.5 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Taipei on March 16, 2001 at 00 and 12 GMT at 4 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Taipei on March 16, 2001 at 00 and 12 GMT at 9 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Back Trajectories to Taipei on March 16, 2001 at 00 and 12 GMT at 13 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Ozone Mixing Ratio at Taipei (25N) on August 24, 2001 at 0300 GMT
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Average Ozone Mixing Ratio at Naha and Hilo for February – April 2001
Naha Hilo
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Hilo, Hawaii Average Ozone Mixing Ratio
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Hilo, Hawaii Ozone Mixing Ratio for February – April 2001
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Average Ozone Mixing Ratio for February – April 2001 compared with long-term average for February – April for Hilo and Hong Kong
1991-2000 2001
Hilo
1993-2000 2001
Hong Kong
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Average Ozone Mixing Ratio for February – April 2001 compared with long-term average for February – April for Naha and Kagoshima
1991-2000 2001
Naha
1991-2000 2001
Kagoshima
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Average Ozone Mixing Ratio for February – April 2001 compared with long-term average for February – April for Tsukuba and Sapporo
1991-2000 2001
Tsukuba
1991-2000 2001
Sapporo
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Average (Clustered) Isentropic Back Trajectories to Hilo 0.5 km for February - April 2001
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Average (Clustered) Isentropic Back Trajectories to Hilo 3 km for February - April 2001
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Average (Clustered) Isentropic Back Trajectories to Hilo 6 km for February - April 2001
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Average (Clustered) Isentropic Back Trajectories to Hilo 9 km for February - April 2001
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Ozone Mixing Ratio at Hilo, HI (19.4N) on March 15, 2001 at 1832 GMTand March 16, 2001 at 1828 GMT (0828 HST)
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Ozone Mixing Ratio at Naha, Japan (26.2N) on April 6, 2001 at 0530 GMTand April 11, 2001 at 0530 GMT
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Average Ozone Mixing Ratio at Kagoshima (32N) and Tateno (36N) for February – April 2001
Kagoshima Tateno
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Average Ozone Mixing Ratio at Kagoshima (32N) and Cheju Isl. (33N) for February – April 2001
Kagoshima Cheju Island
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Average Ozone Mixing Ratio at Kagoshima (32N) and Cheju Isl. (33N) for February – April 2001
Kagoshima
Cheju Island
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Average Ozone Mixing Ratio at Hilo (19N) and Hong Kong (22N) for February – April 2001
Hong Kong
Hilo
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Ozone Mixing Ratio at Cheju Island, Korea (33.5N) on March 1, 2001 at 0413 GMT and March 2, 2001 at 0617 GMT
March 1, 2001 March 2, 2001
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Average Ozone Mixing Ratio at Tateno (36N) and Sapporo (43N) for February – April 2001
Tateno Sapporo
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Ozone Mixing Ratio at Tateno, Japan (36N) on February 8, 2001 at 0530 GMT and March 5, 2001 at 0531 GMT
February 8, 2001 March 5, 2001
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Average Ozone Mixing Ratio at Trinidad Head (41N) and Sapporo (43N) for February – April 2001
Trinidad Head Sapporo
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Trinidad Head, CA Ozone Mixing Ratio for February – April 2001
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Trinidad Head, California Average Ozone Mixing Ratio for February – April 2001 compared with February – April 1998-2000
2001 1997-2000
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Average (Clustered) Isentropic Back Trajectories to Trinidad Head at 0.5 km for February - April 2001
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Average (Clustered) Isentropic Back Trajectories to Trinidad Head at 1 km for February – April During the Period 1990 - 1999
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Average (Clustered) Isentropic Back Trajectories to Trinidad Head at 3 km for February - April 2001
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Average (Clustered) Isentropic Back Trajectories to Trinidad Head at 4 km for February - April for the Period 1990 - 1999
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Trinidad Head, California Average Ozone Mixing Ratio (1997-2001)
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Ozone Mixing Ratio at Trinidad Head (41N) on April 11, 2001 at 1804 GMTand Sapporo, Japan (43N) April 11, 2001 at 0530 GMT
SapporoTrinidad Head
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Back Trajectories to Trinidad Head on April 11, 2001 at 00 and 12 GMT at 4 kmSolid Line = 00 GMT Dashed Line = 12 GMT
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Results and Preliminary Conclusions
• In the western Pacific south of about 35oN there is more ozone in the lower troposphere (<5km) than in the mid-Pacific or higher latitude lower troposphere.
• At Hong Kong there is a March maximum in the mid-troposphere that is isolated from the later spring peak that occurs in May.
• All stations show spring maximums but the strongest peaks are in the mid-troposphere at about 30-35oN.
• In general the February – April 2001 period seems to have tropospheric ozone amounts that are similar to longer term average amounts. At Kagoshima (32oN) there was about 10% less ozone than the long-term average.
• Western Pacific sites south of 30 N show a relative minimum in the upper troposphere.
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Trinidad Head, California (41oN) Average Ozone Mixing Ratio
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Hilo, Hawaii (20oN) Average Ozone Mixing Ratio
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Hong Kong (23oN) Average Ozone Mixing Ratio
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Kagoshima, Japan (32oN) Average Ozone Mixing Ratio
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Clustered Air Parcel Trajectories to Kagoshima, Japan (32oN) at 4 km for May 1991-2001
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Clustered Air Parcel Trajectories to Kagoshima, Japan (32oN) at 4 km for September 1991-2001
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Tsukuba, Japan (36oN) Average Ozone Mixing Ratio
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Sapporo, Japan (43oN) Average Ozone Mixing Ratio
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Trinidad Head, California Average Ozone Mixing Ratio