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Shoshiro Minobe, Masato Miyashita, Akira Kuwano-Yoshida, Hiroki Tokinaga, and Shang-Ping Xie

surface meteorological measurements and weather information from ships (merchant, navy, and research), moored and drifting buoys, coastal stations, and other marine platforms. Because commonly used gridded ICOADS products show some unrealistic features ( Minobe and Maeda 2005 ), we performed the following quality control. First, suspicious data are excluded from the International Maritime Meteorological Archive (IMMA) format of ICOADS using the subjective quality control of Minobe and Maeda (2005

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Daisuke Hotta and Hisashi Nakamura

data quality, especially over the NH oceans and the entire SH, where not many station or sonde observations are available. A digital high-pass filter with a half-power cutoff period of 8 days was applied to the data time series on each grid point to extract fluctuations associated with transient eddies. The high-pass-filtered data were then used to evaluate the eddy thermal and vorticity forcing on the background flow. Diabatic heating used as the forcing for the planetary wave model as described

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Mototaka Nakamura and Shozo Yamane

anomalous U 1000 indicates no systematic relationships between anomalous Ekman transport and SSTA (not shown). Of course, the apparent lack of systematic relationship between SSTA and F h anomalies may be an artifact of poor quality and/or coarse resolution of the F h data. When the 3-month time series of the composited anomalies in SST and F h are examined, we begin to learn more about the potential roles played by the atmosphere and oceans. As evident in Figs. 6 , 8 , 9 , 10 , and 11

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