Atmospheric Responses to Mesoscale Oceanic Eddies in the Winter and Summer North Pacific Subtropical Countercurrent Region Academic Article

abstract

• In the winter and summer North Pacific Subtropical Countercurrent region, the atmospheric responses to 20,000+ mesoscale oceanic eddies (MOEs) are examined using satellite and reanalysis data from 1999 to 2013. The composite results indicate that surface wind speed, cloud, and precipitation anomalies are positively correlated with sea surface temperature anomalies in both seasons. The surface wind speed anomalies and convective precipitation anomalies show dipolar structures centering on MOEs in winter and on unipolar structures in summer. In both seasons, the vertical mixing mechanism plays an obvious role in the atmospheric responses to MOEs. In addition, the distributions of sea level pressure anomalies in winter reflects the effects of the pressure adjustment mechanism. Due to the seasonal variations in the atmospheric background state and the MOEs, the sensitivities of surface wind speeds, clouds, and precipitation responses to MOEs in summer are over 30% higher than those in winter.

authors

• Nowotarski, Christopher

published proceedings

• ATMOSPHERE

author list (cited authors)

• Sun, J., Zhang, S., Nowotarski, C. J., & Jiang, Y.

citation count

• 4

complete list of authors

• Sun, Jianxiang||Zhang, Suping||Nowotarski, Christopher J||Jiang, Yuxi

publication date

• January 2020

publisher

• MDPI  Publisher

published in

• Atmosphere  Journal

keywords

• Marine Atmospheric Boundary Layer
• Mesoscale Oceanic Eddy
• North Pacific Subtropical Countercurrent
• Seasonal Variation

Digital Object Identifier (DOI)

• 10.3390/atmos11080816

start page

• 816

end page

• 816

volume

• 11

issue

• 8

URL

• http://dx.doi.org/10.3390/atmos11080816