Extending)southeastern)Australias) instrumental)climate)record:)) - PowerPoint PPT Presentation

Jul 13, 2023 •675 likes •816 views

Extending)southeastern)Australias) instrumental)climate)record:)) data)quality)and)availability)) 17881859 ! Linden!Ashcro-,!David!Karoly!and!Jolle!Gergis! ! 10 th !EUMETNET!Data!Management!Workshop! 28!October!2015!

Extending)southeastern)Australia’s) instrumental)climate)record:)) data)quality)and)availability)) 1788–1859 ! Linden!Ashcro-,!David!Karoly!and!Joëlle!Gergis! ! 10 th !EUMETNET!Data!Management!Workshop! 28!October!2015!
Why!do!we!need!historical!climate!data?! Context! CalibraNon! Coverage! 4000! Ballarat,!Victoria,!2000! Jones!et!al.!2012! Northern! Hemisphere! Susan!GordonTBrown,!State!Library!of!Victoria!(SLV)! 1000! Southern! Northern!South!Australia,!1865! Hemisphere! University!of!Wisconsin ! 2! 2000! 1850! 1900! 1950! Robert!Bruce,!SLV!!
What!exists!in!Aust.!for!1788–1860?! Image:!Encyclopedia!Britannica,!1903!(www.ebay.co.uk);!Ashcro-.!!
StaNons!are!confined!to!the!coast! 9!
Data!are!available!from!1788!! 8!
Some!observaNons!have!biases! Images!used!with!permission!from!SLNSW,!Science!Museum!UK.!!
Others!have!reliability!issues!
But!overall!are!surprisingly!good! anomalies!relaNve!to!1910–1950! 5!
East!coast,!1826–1860! Snow!in!Sydney,!unseasonably!cold! Cool!and!wet! Drought!in!NSW! Warm!and!wet! Drought!in!NSW! 4! Ashcro-!et!al.!2014.!anomalies!relaNve!to!1910–1950!and!reset!to!zero!
South,!1825–1860! Cold,!wet,!snow!! Warm!and!dry! Wet!then!dry!preceding!! Bushfires!(Black!Thursday)! 3! Ashcro-!et!al.!2014.!anomalies!relaNve!to!1910–1950!and!reset!to!zero!
Prolonged!wet!and!dry!periods,!1835–2012! 2! Ashcro-!et!al.!2015.!
The!data!are!now!publicly!available! Ashcro-,!Gergis!and!Karoly.!2014.!A!historical!climate!dataset!for!southeastern!Australia,!1788– 1859.! Geoscience(Data(Journal ,!1(2):!158–178,!DOI:!10.1002/gdj3.19.!! Ashcro-,!Gergis!and!Karoly.!2015.!LongTterm!staNonarity!of!El!Niño–Southern!OscillaNon! teleconnecNons!in!southeastern!Australia.! Climate(Dynamics ,!DOI:!10.1007/s00382T015T2746T3!!
!Conclusions! Why!do!we!need!historical!weather!data?! 1.!To!improve!our!understanding!of!past,!present!and!future!climate! What!data!exist!for!Australia?!! 2.!ConNnuous!data!back!to!1828,!patchy!observaNons!back!to!1788! But!are!they!any!good?! 3.!They!are!good!enough!to!look!at!yearTtoTyear!climate!variability! What!do!these!historical!records!have!to!say!about!our!climate?! 4.!Lots!! 5.!Explore!regional!and!hemispheric!teleconnecNon!stability,!extreme!events,! What!happens!now?! agreement!with!proxy!data,!find!more!data,!etc.,!etc…! Any!and!all!quesNons!welcome!! lindenclaire.ashcro-@urv.cat!|!@lindenashcro-!

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