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Climate Variability and Change Analysis Research Topics
Current work includes investigations of:
Past work includes the following topics:
Widening of the tropical belt
(Seidel and Randel 2007 ,
Seidel et al. 2008 )
Stratospheric manifestation of El Niño-Southern Oscillation
(Free and Seidel 2009 )
Surface and upper-air temperature and humidity
(Free 2011 ,
Free and Seidel
2005 ,
Fu et al. 2004 ,
Lanzante et al. 2003 ,
Levitus et al. 2001, Ramaswamy et al. 2001,
Ross et al.2002 ,
Santer et al. 2005 ,
Shine et al. 2001,
Seidel et al. 2004 ),
and clouds (Seidel and
Durre 2003 , Sun et al. 2007)
The Arctic Oscillation and the polar vortex
(Angell 2006 ,
Li and Wang 2003)
The Quasi-Biennial Oscillation
(Angell 2001 ,
Seidel et al. 2004 )
Extremes of temperature and
humidity, and heat wave occurrences
(Gaffen and Ross 1998 ,
Wang and Gaffen 2001)
Climatology and variability of the tropical tropopause
(Randel et al. 2000 ,
Seidel et al. 2001 ,
Seidel and Randel 2006 ,
Wang et al. 2012 )
Effects of volcanoes on climate
(Free and Angell 2002 ,
Free and Lanzante 2009 )
Variability and trends in tropical convective available potential
energy (CAPE) and in the potential intensity of hurricanes
(Gettelman et al. 2002 ,
Free et al. 2004 )
Relationships between temperature
changes over mountain locations and in the free troposphere
(Seidel and Free 2003 ,
Pepin and Seidel 2005 )
The diurnal cycle in upper-air temperature
(Seidel et al. 2005 )
Changes in tropospheric and stratospheric ozone
(Angell 1998, Angell and Free 2009 )