منابع مشابه
Barometric Pressure Variations Associated with Eastern Pacific Tropical Instability Waves*
Barometric pressure, surface temperature, and wind time series in the eastern equatorial Pacific are analyzed to determine if oceanic tropical instability wave (TIW) sea surface temperature variations cause barometric pressure gradients large enough to influence the atmospheric boundary layer. During the study period from April 2001 to September 2002, 11 TIWs propagated westward past 110!W, cau...
متن کاملIndo-Pacific Warm Pool Area Expansion, Modoki Activity, and Tropical Cold-Point Tropopause Temperature Variations
The tropical cold-point tropopause temperature (CPTT), a potentially important indicator of global climate change, is of particular importance for understanding changes in stratospheric water vapor levels. Since the 1980s, the tropical CPTT has shown not only interannual variations, but also a decreasing trend. However, the factors controlling the variations in the tropical CPTT since the 1980s...
متن کاملEstimating the Diapycnal Transport Contribution to Warm Water Volume Variations in the Tropical Pacific Ocean
Variations in the warm water volume (WWV) of the equatorial Pacific Ocean are considered a key element of the dynamics of the El Niño–Southern Oscillation (ENSO) phenomenon. WWV, a proxy for the upperocean heat content, is usually defined as the volume of water with temperatures greater than 208C. It has been suggested that the observed variations in WWV are controlled by interplay among meridi...
متن کاملWestern Pacific Tropical Cyclogenesis Precursors
The basic ingredients for tropical cyclogenesis have been well established: a sufficiently deep warm ocean layer, low-level cyclonic vorticity, weak vertical wind shear, and deep moist convection (e. et al. 2008) have attributed cyclogenesis to a variety of low-level precursor systems that enhance one or more of these ingredients. These studies have traditionally focused on features such as the...
متن کاملDiurnal and Semidiurnal Variations of the Surface Wind Field over the Tropical Pacific Ocean
The climatological large-scale patterns of diurnal and semidiurnal near-surface wind variations over the tropical Pacific Ocean are documented using 3 yr of hourly measurements from the Tropical Atmosphere–Ocean moored buoy array. Semidiurnal variations account for 68% of the mean daily variance of the zonal wind component, while diurnal variations account for 82% of the mean daily variance of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1987
ISSN: 0028-0836,1476-4687
DOI: 10.1038/327192a0