There is a large number of regional and national databanks of observational climate data. Several global initiatives are in place to consolidate the databanks to allow comprehensive, one-stop access by climate researchers. However, many of the databanks cover only the computer-based record, which started in the late-middle 20th century. ACRE’s interests are focussed on a deeper historical perspective, taking in the paper-based records that preceded the computer era. Five sources of data which offer the temporal spread suited to ACRE’s data rescue are outlined below.The International Surface Pressure Databank(ISPD)The ISPD is the world's largest collection of atmospheric pressure observations, stretching from 1722 to near-current (data in early years is sparse). It has been developed by extracting observations from numerous sources including established international archives of meteorological variables and combining these with observations rescued and recorded by ACRE partners.The ISPD consists of three components: station observations, marine observations, and tropical cyclone best track pressure reports. The station component merges more than 40 national and international collections and numerous contributions made by ACRE partners. The ISPD is assembled under the auspices of:•Working Group on Surface Pressureof the Global Climate Observing System - GCOS)•Working Group on Observational Data Sets for Reanalysisof the Earth System Research Laboratory, NOAA's National Climatic Data Center (NCDC) and the University of Colorado's Cooperative Institute for Research in Environmental Sciences (CIRES).•ACRE - many of the paper-based digitised observations have come from ACRE partners.Examples include UK Met Office data covering global observations for an extensive period and the South Australian Weather Folios Project’s contribution of 350,000 observations covering the SW Pacific for 1879-1905.Version 4 of the ISPD has the following content:Stations: 39,085Year-files: 616,572Sea level press observations: 1,301,543,547Surface pressure observations: 912,145,218Version 5 of the ISPD covering 1755-2010 is currently being assembledReanalysis– the ISPD observational data are used as input to a reanalysis which also incorporates data from ICOADS and IBTrACS (see below). Products of these reanalyses are available to the scientific community.Over 60 organisationshave contributed to the existence of the ISPD, many of them as Partners and Chapters of the ACRE Project
•National Center for Atmospheric Research (NCAR)National Science Foundation•WORLD Data Centre for MeteorologyU.S. Department of Commerce (DOC) and NOAA’s National Climatic Data Center (NCDC)•ACRE- OldWeather has contributed some 1.6 million marine surface weather observations and along with the Weather Detective Project out of Australia is in the process of contributing another 1.5 million entries covering the mid-late 19th Century.
beginning in 1800 and 1960. (link to Reanalysis page of website)