Article history: Received 19 February 2009 Received in revised form 13 March 2009 Accepted 18 March 2009 Available online 28 March 2009

Article history: Received 18 June 2013 Received in revised form 20 January 2014 Accepted 27 January 2014 Available online 11 February 2014

Article history: Received 18 February 2010 Received in revised form 31 December 2010 Accepted 11 January 2011 Available online 19 January 2011

Article history: Received 16 February 2009 Received in revised form 18 August 2009 Accepted 20 August 2009 Available online 24 August 2009

Article history: Received 8 February 2010 Received in revised form 12 March 2011 Accepted 15 May 2011 Available online 18 May 2011

Article history: Received 7 February 2014 Received in revised form 4 December 2014 Accepted 13 May 2015 Available online 18 May 2015

Article history: Climatologicalfields ofmixe Received 18 December 2007 Received in revised form 5 April 2008 Accepted 22 January 2009 Available online 28 February 2009

Article history: Received 2 July 2013 Received in revised form 7 February 2014 Accepted 12 March 2014 Available online 18 March 2014

Article history: Received 20 January 2010 Received in revised form 12 February 2011 Accepted 22 December 2011 Available online 18 January 2012

Article history: We present a density functi Received 28 February 2008 Received in revised form 18 September 2008 Accepted 22 September 2008 Editor: R.D. van der Hilst