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RISTropical 45 Day Oscillations during the 1979 Northern Hemisphere Summer
Publisher: American Meteorological Society
Abstract: Based on FGGE 1,cvel IIIb data, the structural features of 45 day perturbations over a tropical belt (15°N-15°S) during the 1979 summer are detailed. At the equator, 45 day perturbations which are primarily associated with ...
Transition from the Southern to Northern Hemisphere Summer Monsoon
Publisher: American Meteorological Society
Abstract: During the period from 15 February to 20 June 1979, the northward migration of the zones of low outgoing longwave radiation was most clearly defined over the convectively active continental regions of equatorial Africa, ...
Evidence of the Existence and Eastward Motion of Superclusters at the Equator
Publisher: American Meteorological Society
Abstract: A numerical experiment with an atmospheric general model (GCM) indicate that moist convection in the equatorial region is spontaneously organized into a form of ?supercluster? which is an area of precipitation with a spatial ...
Warm Core Structures in Organized Cloud Clusters Developing or Not Developing into Tropical Storms Observed by the Advanced Microwave Sounding Unit
Publisher: American Meteorological Society
Abstract: The temperature profiles of organized cloud clusters developing or not developing (nondeveloping) into tropical storms (TSs; maximum surface wind >34 kt) over the western North Pacific in 2004 were investigated using ...
An Observing System Experiment for Typhoon Conson (2004) Using a Singular Vector Method and DOTSTAR Data
Publisher: American Meteorological Society
Abstract: An Observing System Experiment (OSE) has been performed to investigate the effectiveness of dropwindsonde observations and a sensitivity analysis technique on a typhoon track forecast. Using dropwindsonde observations for ...
The Impact of Dropwindsonde Observations on Typhoon Track Forecasts in DOTSTAR and T-PARC
Publisher: American Meteorological Society
Abstract: he typhoon surveillance program Dropwindsonde Observations for Typhoon Surveillance near the Taiwan Region (DOTSTAR) has been conducted since 2003 to obtain dropwindsonde observations around tropical cyclones near Taiwan. ...
The Impact of Dropwindsonde Data on Typhoon Track Forecasts in DOTSTAR
Publisher: American Meteorological Society
Abstract: Starting from 2003, a new typhoon surveillance program, Dropwindsonde Observations for Typhoon Surveillance near the Taiwan Region (DOTSTAR), was launched. During 2004, 10 missions for eight typhoons were conducted ...
Global Distribution of the Skill of Tropical Cyclone Activity Forecasts on Short- to Medium-Range Time Scales
Publisher: American Meteorological Society
Abstract: perational global medium-range ensemble forecasts of tropical cyclone (TC) activity (genesis plus the subsequent track) are systematically evaluated to understand the skill of the state-of-the-art ensembles in forecasting ...
The Influence of Assimilating Dropsonde Data on Typhoon Track and Midlatitude Forecasts
Publisher: American Meteorological Society
Abstract: unique dataset of targeted dropsonde observations was collected during The Observing System Research and Predictability Experiment (THORPEX) Pacific Asian Regional Campaign (T-PARC) in the autumn of 2008. The campaign was ...
Intercomparison of Targeted Observation Guidance for Tropical Cyclones in the Northwestern Pacific
Publisher: American Meteorological Society
Abstract: This study compares six different guidance products for targeted observations over the northwest Pacific Ocean for 84 cases of 2-day forecasts in 2006 and highlights the unique dynamical features affecting the tropical ...