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ACRE-Early Instrumental. A global inventory of early instrumental records. Stefan Brönnimann, Oeschger Centre and Institute of Geography. ACRE Meeting Tokyo. Why? Switzerland Globally Early Inventories Conclusions. ACRE-Early Instrumental. Overview. Why?. ACRE-Early Instrumental.
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ACRE-Early Instrumental A global inventory of early instrumental records Stefan Brönnimann, Oeschger Centre and Institute of Geography ACRE Meeting Tokyo
Why? Switzerland Globally Early Inventories Conclusions ACRE-Early Instrumental Overview
Why? ACRE-Early Instrumental Global 3-D climate reconstruction Global 3-D weather reconstruction
ACRE-Early Instrumental Switzerland Analog Resampling Summer 1816 Flückiger et al. 2017
ACRE-Early Instrumental Switzerland Lots of pre-MeteoSwiss data Often short... ...but many So, let‘s do it globally
ACRE-Early Instrumental Early Instrumental Data Compile, image, digitise millions of obs. Recent workshop in Bern Global inventory of pre-1850 series will be compiled Expect thousands of entries But needs digitising
ACRE-Early Instrumental Structure of Inventory Station name(s), coordinates, altitude, location details Time period covered Observer, variables, measurement frequency Compilations/inventory, source Status ...and many more Heterogeneous: Observers/variables, etc.
Isothermal Maps ACRE-Early Instrumental Early Compilations ISTI/Berkey Earth/CRUTEM/GHCN... 1816: Humboldt used 13 stations 1838: Berghaus used >300 stations 1840s: Dove used 1100 stations ...and published all monthly means (some of it is not in GHCN)
ACRE-Early Instrumental Early Networks 1654-1667: Rete Medici 1717-1730: Kanold 1724-1735: Jurin 1781-1792: Palatina
ACRE-Early Instrumental Early Inventories • National compilations 1839: 50 T + 70 R series in Italyand elsewhere 1883: >600 series in Germany Schott, Suppan etc.
20 series in 17th, 1000 series in 18th century? ACRE-Early Instrumental How far back? Stations starting earlier than 1850 (1890 in Africa)
ACRE-Early Instrumental Long series • Some potential long records South Germany, back to 1691 Wroclaw back to 1710 Zurich, back to 1708 ....
Some instru-mental temp. (but thereis rainfall) ACRE-Early Instrumental Asia
ACRE-Early Instrumental Comparison with EKF400 Should compare With documentary data
Oldest entry in our inventory ACRE-Early Instrumental China China, Amoy Observer: James Cunningham Period: 1698-1699 Variables: P, Wn Data published: Philos. Trans. 1699 p. 323-330 Source: Hellmann, 1927 China, Chusan Observer: James Cunningham Period: 1700-1702 Data published: Philos. Trans. 1704 p. 1648-1698 Source: Hellmann, 1927
Oldest entry in our inventory ACRE-Early Instrumental Japan Japan, location not indicated, Observer: C.P. Thunberg (Swedish doctor), Period 1775-1776, Data published: Verhandel. Deel 19, 1780, Source: Hellmann, 1927 But then the next entry is Nagasaki, 1840s
ACRE-Early Instrumental Lots still missing Masumi Zaiki
ACRE-Early Instrumental Climate Data ar Societal Products Importance of Context Data covergae for 1947 Brönnimann and Wintzer 2018
ACRE-Early Instrumental Conclusions Inventory helps prioritizing (basis for large project?) Reanalysis is feasible back into 18th century Already 7137 entries: More data than you think! Still VASTLY incomplete