[1] Data collected by Old Weather has been used by at least five different climate reanalysis projects, including HURDAT, SODA and ECMWF.

[3] Old Weather is a Zooniverse project and is a collaboration between researchers at many institutions, including the University of Oxford, Oxford Martin School, ACRE (International Atmospheric Circulation Reconstructions over the Earth), Naval-History.Net of Penarth, Jisc which encourages UK colleges and universities in the innovative use of digital technologies, the National Maritime Museum at Maritime Greenwich, London, and the UK National Archives, Kew, London.

In the past, computer programs have proved unable to read handwriting reliably and the task is much better performed by humans and the results transferred to a digital form.

Other log entries, such as refueling figures and sightings of sea-ice, ships, people, landmarks or animals may also be recorded, as well as interesting events.

[15] Phase III, consisting of logs from US ships voyaging in the Arctic and worldwide from the mid-1800s onward, was launched in October 2012.

This method for data extraction was approved by the science team consisting of Philip Brohan, Kevin Wood and Gil Compo.

Volunteer transcribers create spreadsheets of information on sea ice and weather provided in the logbooks for scientists to use in climate studies.

[22] Following the death of project founder Kevin Wood, the Whaling Logs section is currently seeking a new institution or platform to accept any future data.

Naval History Old Weather volunteers are transcribing historical data from the ships' logs from US Navy, Revenue Cutter Service/Coast Guard and Coast & Geodetic Survey ships operating mostly in the Arctic and in the Pacific Ocean in the 19th and 20th Centuries.The historical transcriptions are published here, before and after they are edited by Naval-History volunteers.

350,000 pages were transcribed and include logs from ships present at the Battle of the Falklands, at Gallipoli, Mesopotamia, East Africa, and the China Station.

[27] Because climate change[28] is a very political issue, interested parties could try to corrupt the data by, say, entering temperature figures that are too high or too low.

Large-scale fraud is unlikely because the data is entered one log page at a time, and so is immune to a spam type of attack.