reSeArCH Letter
Year
1860 1880 1900 1920 1940 1960 1980 2000
Number of bucket measurements
x10
50
2
4
6
8
10
12
0
20
40
60
80
100
Percentage of bucket measurements
GB DCK 184
GB DCK 201
GB DCK 202
GB DCK 203
GB DCK 230
GB DCK 245
GB DCK 249GB DCK 706
GB DCK 792
GB DCK 926
GB DCK 927
NL DCK 193
NL DCK 926
NL DCK 927JP DCK 118
JP DCK 926
JP DCK 927
US DCK 701
US DCK 704
US DCK 706
US DCK 927DE DCK 192
DE DCK 215
DE DCK 720
DE DCK 721
DE DCK 926
DE DCK 927
RU DCK 555RU DCK 732
RU DCK 735
RU DCK 888
RU DCK 926
RU DCK 927
BR DCK 926
CA DCK 926CA DCK 927
FR DCK 926
FR DCK 927
---- DCK 155
---- DCK 156
---- DCK 203
Other GroupsExtended Data Fig. 9 | Groups providing bucket SST measurements
from 1850 to 2014. Left-hand y-axis: numbers of bucket SST
measurements from individual groups, identified by country and deck
information as colour coded, in ICOADS3.0. CA, Canada; BR, Brazil;
DE, Germany; FR, France; GB, Great Britain; NL, Netherlands; JP, Japan;
RU, Russia; US, United States; —, missing country information. Black
text shows the 46 of 162 groups that contributed to the SST archive
between 1908 and 1941, which is indicated by shading. Groups with
fewer than 2 × 105 measurements throughout 1850 to 2014 are labelled
as ‘other groups’. Right-hand y-axis, percentage of measurements that
are from buckets (black line). Bucket measurements constitute nearly all
observations before the 1930s.