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UID:71f148f91a4a105aab88fe260e0e0059
DTSTAMP:20261009T081513Z
SUMMARY:SPC Seminar – Climate – Joshua Duffield (Imperial)
DESCRIPTION:Title: Seasonal cycle of surface temperature: insights from sim
 ple models\nSpeaker: Joshua Duffield (Imperial)\nAbstract: From the perspe
 ctive of the annual harmonic\, the role of surface heat capacity in contro
 lling the seasonal cycle of surface temperature is readily apparent: a lar
 ger heat capacity leads to a greater lag (i.e.\, the time delay between pe
 ak incoming solar radiation and the hottest day of the year)\, as well as 
 a reduced seasonal amplitude (i.e.\, the difference between summer and win
 ter temperatures). Over the ocean\, changes in heat capacity in response t
 o global warming can therefore drive opposing amplitude trends. At high la
 titudes\, sea-ice melt increases heat capacity and reduces seasonal amplit
 ude\, whereas elsewhere\, a reduction in mixed-layer depth associated with
  increased stratification decreases heat capacity and increases seasonal a
 mplitude. Over land\, the response of the seasonal cycle to warming and th
 e underlying physical mechanisms are less certain. Here\, we use single-co
 lumn model simulations to investigate this response\, with particular atte
 ntion to the expected decrease in seasonal amplitude resulting from increa
 sed atmospheric heat capacity under warming.\n
URL:https://www.imperial.ac.uk/events/214608/spc-seminar-climate-joshua-duf
 field-imperial/
DTSTART;TZID=Europe/London:20261020T113000
DTEND;TZID=Europe/London:20261020T123000
LOCATION:711c\, Huxley Building\, South Kensington Campus\, Imperial Colleg
 e London\, London\, SW7 2AZ\, United Kingdom
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