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RISLow-Frequency Intraseasonal Tropical-Extratropical Interactions
Publisher: American Meteorological Society
Abstract: Low-frequency (20?70 day) variability is examined during Northern Hemisphere (NH) winter based on seven Years (1981?87) of European Centre for Medium Range Weather Forecasts initialized analyses. The dominant 200 mb zonal ...
Remotely Forced Intraseasonal Oscillations over the Tropical Atlantic
Publisher: American Meteorological Society
Abstract: Intraseasonal (20?70 day) variability is examined in the Atlantic region during Northern Hemisphere winter using ECMWF analyses and NOAA outgoing longwave radiation (OLR). It is found that the dominant 200-mb zonal-wind ...
On the Nature of the 1994 East Asian Summer Drought
Publisher: American Meteorological Society
Abstract: East Asian countries experienced record-breaking heat waves and drought conditions during the summer monsoon season of 1994. This study documents the large-scale circulation associated with the drought and suggests a forcing ...
GCM Simulations of Intraseasonal Variability in the Pacific/North American Region
Publisher: American Meteorological Society
Abstract: General circulation model (GCM) simulations of low-frequency variability with time scales of 20 to 70 days are analyzed for the Pacific sector during boreal winter. The GCM's leading mode in the upper-tropospheric zonal ...
Response of the Zonally Asymmetric Flow to Time-Dependent Tropical Heating
Publisher: American Meteorological Society
Abstract: An atmospheric general circulation model is used to study the impact of idealized zonally propagating tropical heating anomalies on the low-frequency variability in the North Pacific region. The propagating heating is ...
Improving the Northeast Asian Monsoon Simulation: Remote Impact of Tropical Heating Bias Correction
Publisher: American Meteorological Society
Abstract: This study investigates the role of model tropical diabatic heating error on the boreal summer northeast Asian monsoon (NEAM) simulation given by a general circulation model (GCM). A numerical experiment is carried out in ...
Potential Predictability of Summer Mean Precipitation in a Dynamical Seasonal Prediction System with Systematic Error Correction
Publisher: American Meteorological Society
Abstract: Potential predictability of summer mean precipitation over the globe is investigated using data obtained from seasonal prediction experiments for 21 yr from 1979 to 1999 using the Korea Meteorological Administration?Seoul ...
Remote Connection of the Northeast Asian Summer Rainfall Variation Revealed by a Newly Defined Monsoon Index
Publisher: American Meteorological Society
Abstract: A new northeast Asian summer monsoon index is introduced to investigate the characteristics of the northeast Asian summer rainfall variation, including Korea, Japan, and northeast China, and its possible connection to the ...
Statistical Downscaling of Precipitation in Korea Using Multimodel Output Variables as Predictors
Publisher: American Meteorological Society
Abstract: A pattern projection downscaling method is applied to predict summer precipitation at 60 stations over Korea. The predictors are multiple variables from the output of six operational dynamical models. The hindcast datasets ...
A Probabilistic Multimodel Ensemble Approach to Seasonal Prediction
Publisher: American Meteorological Society
Abstract: A probabilistic multimodel ensemble prediction system (PMME) has been developed to provide operational seasonal forecasts at the Asia?Pacific Economic Cooperation (APEC) Climate Center (APCC). This system is based on an ...