Characteristics of aerosol number concentrations over the ice-covered Okhotsk Sea

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概要

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• Aerosol number concentrations were observed in conjunction with in-situ meteorological parameters aboard the patrol vessel SOYA in February 2003 over the ice-covered Okhotsk Sea. The concentrations of particles with radii larger than 0.35 μm were close to the background level, while concentrations of particles less than 0.35 μm were close to the remote continental level. During the observation period, relatively higher and lower aerosol number concentrations (HA and LA) were observed, depending on synoptic weather conditions. Backward trajectory analyses revealedthat for the HA period, the air mass in the study region traced back to the Sea of Japan; for theLA period, the air mass originated from the northern ice-covered area. This suggests that sea ice influences the aerosol number concentration by suppressing the amount of oceanic sea salt sup-plied to air masses. Using the observational data and an empirical formula, differences in surfacesolar radiation between the HA and LA periods were also examined.

• 社団法人日本気象学会の論文
• 2005-08-25

著者

• Toyota Takenobu

  Institute Of Low Temperature Science Hokkaido University

• INOUE Jun

  Institute of Observational Research for Global Change, Japan Agency for Marine-Earth Science and Tec

• Inoue Jun

  Inst. Of Observational Res. For Global Change Japan Agency For Marine-earth Sci. And Technol.

• Inoue Jun

  Institute Of Low Temperature Science Hokkaido University

関連論文

• Properties of Sea Ice and and Overlying Snow in the Southern Sea of Okhotsk
• Sea ice thickness estimated from passive microwave radiometers
• In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments
• Measurements of Air-Ice Drag Coefficient over the Ice-Covered Sea of Okhotsk
• Characteristics of aerosol number concentrations over the ice-covered Okhotsk Sea
• Aircraft Observations of Air-Mass Modification Upstream of the Sea of Japan during Cold-Air Outbreaks
• Doppler Radar Study on the Successive Development of Snowbands at a Convergence Line near the Coastal Region of Hokuriku District
• Wind Filds over Funka Bay and Their Effect on Water Circulation in the Bay
• Outflow of Summertime Arctic Sea Ice Observed by Ice Drifting Buoys and Its Linkage with Ice Reduction and Atmospheric Circulation Patterns
• Characteristics of Heat Transfer over the Ice Covered Sea of Okhotsk during Cold-air Outbreaks
• Air Mass Transformation Processes over the Southwestern Region of the Ice-covered Sea of Okhotsk during Cold Air Outbreaks

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