Line P Program

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Program Overview

History: Ocean Station Papa, situated at 50°N, 145°W, was operated as an ocean weather station starting in December 1949. At that time, the weatherships were occupying Station Papa, and they kept doing so until 1981. After the withdrawal of the weatherships in 1981 the Line P/Station P Program was taken over by the Institute of Ocean Sciences from Fisheries and Oceans Canada (DFO). A complete history of the program is available.
Collaborators: The program has been modified many times over the years. Nowadays there are three Line P cruises per year, generally in February, June, and August. Many collaborators from different institutions and universities are involved in Line P although the core work is still managed and coordinated by DFO.
Future cruises: Since there is a high demand for participation to the cruises, a list of future cruises participants is maintained. This allows people to make arrangements for still obtaining samples from a cruise if another participant is willing to help. Map, list of stations and sampling: The Line P program is made of two parts: monitoring and research. For the monitoring aspect of the program, a set of standard sampling depths and variables is being accomplished on every cruise.
Workshops: Another way to create collaboration with other scientists and put all results together is to attend the annual Line P workshop. The Line P workshop is held in March of every year and includes two types of presentations: results from past cruises and proposed research for future cruises. Usually these talks all happen during the first day. There is a second day to the workshop for discussions about cruise planning for the coming year. The workshop is open to all scientists, but please contact the Line P coordinator if you wish to participate in the coming workshop and haven't received the invitation email by January.
Publications: Many publications have been written using Line P data. An extensive list is available here. If you have a paper not listed here that would you like to see added, please contact the Line P coordinator.

Acknowledgement:

The Line P data is publicly and freely available. If you use these data for your research or publications, or for any other type of use, please do include this reference.

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Website Overview

This website is based on "cruise by cruise" pages. Unfortunately the Line P data are not in a database at the moment. For the cruises prior to and including 2006, the data distribution is not very user-friendly. Hopefully these cruises will eventually be converted to the newer format. The cruises from 2007 are composed of common fields. Taking cruise 2011-27 as an example, these fields include:
Cruise description: a brief description of how the cruise went and the work performed at sea.
Cruise personnel: who was on board and their affiliation.

Map of the cruise track and stations: It happens that other stations than the specific ones along Line P are visited. Or else some stations can be skipped because of bad weather or ship problems.
Table of stations and sampling done In this table are listed all the events that took place during the cruise along with the station name, position, date and time, and the sampling that was performed. The sampling information contains a direct link to that specific data file.
Download the data for the whole cruise: The subsections here are for CTD data, Chemistry (rosette) data, Zooplankton data, Trace metal data, Drifter data, and thermosalinograph and loop data. The CTD, Rosette and Zooplankton data can either be downloaded by individual cast (one file), or by groups of casts (e.g. Deep casts, DMS casts, UBC casts, etc).
Profiles: of Temperature, Salinity, Sigma-t and Dissolved Oxygen (DO) as well as their anomalies (except for DO) along Line P are also available for every cruise. The present anomalies are calculated against the 1956-1991 averages. Most recent averages - 1980 - 2010 - are in the process of being computed and once these are available, new anomalies will be re-calculated.
Documents: Documents specific to each cruise create the last part of each page: Cruise plan, post cruise report, various duplicates analysis, analysis methods, references, etc.
If you participated in a Line P cruise and would like to make your data available on the Line P website, either as data files or through a link, please contact the Line P coordinator.

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