Abstract
Problem statement: The most recent warming trends occurred during the winter in Polar Regions had been attracted many researchers t o study its impacts, which might affect the sensitivity of climate prediction in both regions, as well as on a global basis. Approach: The aims of this study were to observe the characteristics o f coreless winter events using the GPS meteorology such as the Zenith Tropospheric Delay ( ZTD), Precipitable Water Vapor (PWV), the surface meteorology and the solar radiation measure ments. The periods of observations were within two years which from January 2008 to December 2009 for Antarctic and from July 2008 to June 2010 for the Arctic. Results: The occurrence of coreless winter had clearly dete cted in June and January for Antarctic and Arctic, respectively. During the winter period, PWV and ZTD, temperature and relative humidity variations in bot h regions demonstrate a significant unusual warming peak than with the surface pressure. During this event, the increasing of 1°C of temperature showed that the PWV in Arctic was observed twice larger compared to the Antarctic. Conclusion: The increased PWV during winter suggest that the c oreless winters characteristic is signified when advection between the warm or cold a ir masses over the region tend to increase the formation of cyclonic activity that causes increasi ng in surface temperature.
Highlights
The Antarctic-Arctic regions are increasingly recognized as the spots which are strongly influenced by the world climate system
Because of bipolar being in the forefronts of climate change issues and a sensitive indicator of global-scale climate change, the proper characterization of the polar atmosphere is essential to improve our understanding of the coupling mechanisms between bipolar and global climates and between the atmospheric, land and oceanic components of the climate system
The significant warmed trends during winter in the Antarctic and Arctic regions have been attracted many researchers to study about the physical mechanism that contributed to the event
Summary
The Antarctic-Arctic regions (bipolar) are increasingly recognized as the spots which are strongly influenced by the world climate system. Small changes of atmospheric water vapor have a much larger impacts on the greenhouse effect and thereby heat the Earth’s surface that causes a warming. As it can be seen, a part of both regions in recent years had shown most rapid rates of the warming impact. The significant warmed trends during winter in the Antarctic and Arctic regions have been attracted many researchers to study about the physical mechanism that contributed to the event. We propose water vapor monitoring with groundbased Global Positioning System (GPS) technique to characterize the coreless winter behavior.
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