Stratospheric temperature over the Antarctic region
نویسندگان
چکیده
Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF operational model. M. C. Parrondo, M. Yela, M. Gil, P. von der Gathen, and H. Ochoa Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz, Spain Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Germany Dirección Nacional de Antártico, Buenos Aires, Argentina Received: 18 April 2006 – Accepted: 19 June 2006 – Published: 9 August 2006 Correspondence to: M. C. Parrondo ([email protected])
منابع مشابه
Evolution of stratospheric temperature in the 20th century
[1] We employ a coupled atmosphere-ocean climate model to investigate the evolution of stratospheric temperatures over the twentieth century, forced by the known anthropogenic and natural forcing agents. In the global, annual-mean lower-to-middle stratosphere ( 20–30 km.), simulations produce a sustained, significant cooling by 1920, earlier than in any lower atmospheric region, largely resulti...
متن کاملHas the ozone hole contributed to increased Antarctic sea ice extent?
[1] Since the 1970s sea ice extent has decreased dramatically in the Northern Hemisphere and increased slightly in the Southern Hemisphere, a difference that is potentially explained by ozone depletion in the Southern Hemisphere stratosphere. In this study we consider the impact of stratospheric ozone depletion on Antarctic sea ice extent using a climate model forced with observed stratospheric...
متن کاملAntarctic atmospheric temperature trend patterns from satellite observations
[1] Tropospheric temperatures in the Antarctic are retrieved by linearly combining satellite-borne Microwave Sounding Unit (MSU) channels 2 and 4 observations. We show good agreement between satellite-inferred temperature trends and radiosonde observations. It is illustrated that the Antarctic troposphere has cooled in the summer and fall seasons since 1979, in agreement with Thompson and Solom...
متن کاملUse of SSU/MSU Satellite Observations to Validate Upper Atmospheric Temperature Trends in CMIP5 Simulations
The tropospheric and stratospheric temperature trends and uncertainties in the fifth Coupled Model Intercomparison Project (CMIP5) model simulations in the period of 1979–2005 have been compared with satellite observations. The satellite data include those from the Stratospheric Sounding Units (SSU), Microwave Sounding Units (MSU), and the Advanced Microwave Sounding Unit-A (AMSU). The results ...
متن کاملOn the Identification of the Downward Propagation of Arctic Stratospheric Climate Change over Recent Decades*
Dynamical coupling between the stratospheric and tropospheric circumpolar circulations in the Arctic has beenwidely documented onmonth-to-month and interannual time scales, but not on longer time scales. In the Antarctic, both shortand long-term coupling extending from the stratosphere to the surface has been identified. In this study, changes in Arctic temperature, geopotential height, and ozo...
متن کامل