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RISClimatological Evolution of the Okinawa Baiu and Differences in Large-Scale Features during May and June
Publisher: American Meteorological Society
Abstract: he Okinawa baiu (summer rainy season) starts in early May and ends in late June, preceding the baiu in mainland Japan by approximately 1 month. This study investigates the time evolution of the large-scale circulation ...
Eurasian Subarctic Summer Climate in Response to Anomalous Snow Cover
Publisher: American Meteorological Society
Abstract: he summer climate in northern Eurasia is examined as a function of anomalous snow cover and processes associated with land?atmosphere coupling, based on a composite analysis using observational and reanalysis data. The ...
Influence of the Anticyclonic Anomaly in the Subtropical Jet over the Western Tibetan Plateau on the Intraseasonal Variability of the Summer Asian Monsoon in Early Summer
Publisher: American Meteorological Society
Abstract: he upper-level troposphere over the western Tibetan Plateau, where the subtropical jet is located in summer, is a region of marked intraseasonal variability in geopotential height (GPH). This study investigates the influence ...
Decadal-Scale Variation of South Asian Summer Monsoon Onset and Its Relationship with the Pacific Decadal Oscillation
Publisher: American Meteorological Society
Abstract: he variation of the summer monsoon onset over South Asia was investigated by using long-term data of the onset over Kerala, India, during the 64-yr period from 1948 to 2011. It was found that the onset over Kerala shows ...
Observations of the Final Warming in the Stratosphere of the Southern Hemisphere during 1979
Publisher: American Meteorological Society
Abstract: The evolution of the flow in the Southern Hemisphere during the period 31 August-10 November 1979 is examined. The final stratospheric warming of 1979 and the associated reversal of the flow above 10 mb occurred during ...
The Interaction between Two Separate Propagations of Rossby Waves
Publisher: American Meteorological Society
Abstract: This study deals with two teleconnection patterns and the subsequent wave train propagations during an East Asian summer. Diagnostic results are as follows: 1) a stationary wave ray with zonal wavenumber 5 approximates the ...
Summer Arctic Atmospheric Circulation Response to Spring Eurasian Snow Cover and Its Possible Linkage to Accelerated Sea Ice Decrease
Publisher: American Meteorological Society
Abstract: nticyclonic circulation has intensified over the Arctic Ocean in summer during recent decades. However, the underlying mechanism is, as yet, not well understood. Here, it is shown that earlier spring Eurasian snowmelt leads ...
Observations of Wave-Mean Flow Interaction in the Southern Hemisphere
Publisher: American Meteorological Society
Abstract: Variations of zonal mean and eddy properties in the Southern Hemisphere during the winter of 1979 are studied. Several periods of enhanced wave activity and rapid zonal-mean changes are observed. During these periods of ...
Numerical Forecasts of Stratospheric Warming Events during the Winter of 1979
Publisher: American Meteorological Society
Abstract: The predictability of the stratospheric warming events during the winter of 1979 is investigated by performing a series of 10-day forecasts using the UCLA general circulation model. In general, those events are predictable ...
Dynamic and Thermodynamic Characteristics of Atmospheric Response to Anomalous Sea-Ice Extent in the Sea of Okhotsk
Publisher: American Meteorological Society
Abstract: Influence of sea-ice extent anomalies within the Sea of Okhotsk on the large-scale atmospheric circulation is investigated through an analysis of the dynamic and thermodynamic characteristics of the response in an atmospheric ...