Anomalous wind circulation over Taipei, Taiwan during the northern winter seasons of 2004 and 2005- A case study
Journal Title: Satellite Oceanography and Meteorology - Year 2018, Vol 3, Issue 2
Abstract
This research reports, for the first time, an anomalous wind circulation over Taipei (Latitude 25.030N, Longitude 121.510E), Taiwan during the northern hemisphere winter season (December, January, and February) of years 2004 and 2005. The anomalous wind circulation of meridional winds, which showed southward directions during the winter seasons of 2004 and 2005 instead of northward winds, is noticed from one kilometer altitude range (lower troposphere) and that trend continued till around 20 km altitude range (lower stratosphere). To ascertain whether such a disturbed nature of wind pattern existed over nearby locations to Taipei, we have analyzed radiosonde-measured meridional and zonal winds over four nearby stations station to Taipei including, Roig, Xiamen, Minami and Fuzhou. Surprisingly, no anomalous wind behavior is seen except over Taipei during the northern winter seasons of 2004 and 2005. On the other hand, the European Centre for Medium-Range Weather Forecasts (ECMWF) model-predicted winds do not show any anomalous wind patterns over Taipei and other nearby stations, possibly due to the large averaging of internal variabilities of reanalysis databases. The plausible physical mechanisms of these disturbed meridional wind patterns are not understood at this juncture, but it is believed that local winds and atmospheric pollutants might havecreated an amicable environment as to provide such a disturbed meridional wind pattern over Taipei, Taiwan in the winter season of 2004 and 2005.
Authors and Affiliations
A. Narendra Babu, V. Naveen Kumar, P. S. Brahmanandam, M. Purnachandra Rao, M. Roja Raman, K. Sreedhar
Keywords
Related Articles
- EP ID EP678916
- DOI -
- Views 220
- Downloads 0
Sea level pressure response to the specification of eddy-resolving sea surface temperature in simulations of Australian east coast lows
Four east coast lows (ECLs) were simulated with the Weather Research and Forecast model to investigate the influence of the sea surface temperature (SST) distribution on the sea level pressure (SLP). Each ECL was simulat...
The variability of the sediment plume and ocean circulation features of the Nass River Estuary, British Columbia
The Nass River discharges into Nass Bay and Iceberg Bay, which are adjoining tidal inlets located within the northern inland waters of British Columbia, Canada. After the Skeena River, the Nass River is the second longes...
Test and evaluation of a simple parameterization to enhance air-sea coupling in a global coupled model
A simple temperature-dependent wind stress scheme is implemented in National Center for Atmospheric Research (NCAR) Community Earth System Model (CESM), aiming to enhance positive wind stress and sea surface temperature...
Relationship between extensive and persistent extreme cold events in China and stratospheric circulation anomalies
This study examines the relationship between the extensive and persistent extreme cold events (EPECEs) in China and geopotential height anomalies in the stratosphere using daily mean fields of outgoing long wave radiatio...
Using CloudSat observations to evaluate cloud top heights from convection parameterization
How high convective clouds can go is of great importance to climate. Cloud ice and liquid water that detrain near the top of convective cores are important for the formation of anvil clouds and thus impact cloud radiativ...