Abstract: It has been well established that the atmosphere is chaotic by nature and thus has a finite limit of predictability. The chaotic divergence of initial conditions and the predictability are explored here in the context of ...

Abstract: arge-scale Rossby normal modes are studied for the Northern Hemisphere winters of 2005, 2006, 2008, and 2009 using global observational meteorological analyses spanning the 0?92-km altitude range. Spectral analysis of ...

Abstract: Mean meridional circulations for the months of November through May 1979 are deduced from the net radiative heating rates obtained from detailed calculations based on satellite observations of temperature and radiatively ...

Abstract: This paper compares present-day simulations made with two state-of-the-art climate models: a conventional model specifically designed to represent the tropospheric climate, which has a poorly resolved middle atmosphere, ...

Abstract: The Brewer?Dobson circulation strengthens in the lowermost tropical stratosphere during warm El Niño?Southern Oscillation (ENSO) events. Dynamical analyses using the most recent version of the Whole Atmosphere Community ...

Abstract: The authors present a chronology of El Niño (EN) events based on documentary records from northern Peru. The chronology, which covers the period 1550?1900, is constructed mainly from primary sources from the city of Trujillo ...

Abstract: Two-dimensional model calculations of the photochemistry and transport of carbon monoxide in the stratosphere, mesosphere, and lower thermosphere are presented. Results are compared to available observations at midlatitudes, ...

Abstract: The response of stratospheric climate and circulation to increasing amounts of greenhouse gases (GHGs) and ozone recovery in the twenty-first century is analyzed in simulations of 11 chemistry?climate models using ...