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author = "Haigh, Joanna D."
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Found 5 documents, displaying page 1 of 1

The Sun and the Earth's Climate

Author(s) : Haigh Joanna D.
Description : Variations in solar activity, at least as observed in numbers of sunspots, have been apparent since ancient times but to what extent solar variability may affect global climate has been far more controversial. The subject had been in and out of fashion for at least two centuries but the current need...
Repository : DOAJ-Articles
Language(s) : Undetermined

The response of tropospheric circulation to perturbations in lower-stratospheric temperature

Author(s) : Haigh, Joanna D. , Blackburn, Michael , Day, Rebecca
Description : A multiple regression analysis of the NCEP-NCAR reanalysis dataset shows a response to increased solar activity of a weakening and poleward shift of the subtropical jets. This signal is separable from other influences, such as those of El Nino-Southern Oscillation (ENSO) and the North Atlantic Oscil...
Repository : CentAUR
Language(s) : Undetermined

Experiments with a two-dimentional model of the general circulation

Author(s) : Haigh, Joanna D. , Walshaw, C. D. , Dr. C.D. Walshaw
Description : Experiments have been conducted with a two-dimensional timedependent, numerical model of the general circulation of the atmosphere up to the mesopause. A scheme for the calculation of cooling rates due to the 15(mu)m band of carbon dioxide is developed. It uses the Curtis matrix approach which incor...
Repository : Oxford University Research Archive (ORA)
Language(s) : English

The impact of the state of the troposphere on the response to stratospheric heating in a simplified GCM

Author(s) : Simpson, Isla R. , Blackburn, Michael , Haigh, Joanna D. , Sparrow, Sarah Naomi
Description : Previous studies have made use of simplified general circulation models (sGCMs) to investigate the atmospheric response to various forcings. In particular, several studies have investigated the tropospheric response to changes in stratospheric temperature. This is potentially relevant for many clima...
Repository : CentAUR
Language(s) : Undetermined

Annular variability and eddy-zonal flow interactions in a simplified atmospheric GCM. Part 1: Characterization of high and low frequency behaviour

Author(s) : Sparrow, Sarah Naomi , Blackburn, Michael , Haigh, Joanna D
Description : Experiments have been performed using a simplified, Newtonian forced, global circulation model to investigate how variability of the tropospheric jet can be characterized by examining the combined fluctuations of the two leading modes of annular variability. Eddy forcing of this variability is analy...
Repository : CentAUR
Language(s) : Undetermined
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Found 5 documents, displaying page 1 of 1