Line P Program

• History
• Map and list of stations
• Present sampling
• Principal Participants and Collaborators
• Publications

Data

• Cruises from 1956 to 2006
• Cruises from 2007 to present

Workshops

The 5th annual Line P workshop will be held at IOS on Tuesday March 6 and Wednesday March 7, 2012.

Future cruises - dates and participants 

Related links

• NOAA Mooring at Station Papa
• Carbon Dioxide Information Analysis Center (CDIAC)

Map and list of stations 

Station	Latitude N	Longitude W	Depth	Station type (see Present sampling below)
P1	48°34.5	125°30.0	120	CTD
P2	48°36.0	126°00.0	114	Rosette/Bongo
P3	48°37.5	126°20.0	750	CTD
P4	48°39.0	126°40.0	1300	Rosette/Bongo
P5	48°41.5	127°10.0	2100	CTD
P6	48°44.6	127°40.0	2500	CTD
P7	48°46.6	128°10.0	2450	CTD
P8	48°49.0	128°40.0	2440	Rosette/Bongo
P9	48°51.4	129°10.0	2340	CTD
P10	48°53.6	129°40.0	2660	CTD
P11	48°56.0	130°10.0	2700	CTD
P12	48°58.2	130°40.0	3300	Rosette/Bongo
P13	49°02.6	131°40.0	2875	CTD
P14	49°07.4	132°40.0	3275	CTD
P15	49°12.0	133°40.0	3200	CTD
P16	49°17.0	134°40.0	3550	Rosette/Bongo
P17	49°21.0	135°40.0	3200	CTD
P18	49°26.0	136°40.0	3775	CTD
P19	49°30.0	137°40.0	3850	CTD
P20	49°34.0	138°40.0	3890	Rosette/Bongo
P21	49°38.0	139°40.0	3840	CTD
P22	49°42.0	140°40.0	3880	CTD
P23	49°46.0	141°40.0	3970	CTD
P24	49°50.2	142°40.0	3910	CTD
P25	50°00.0	143°36.3	3890	CTD
P35	50°00.0	144°18.2	4170	CTD
P26	50°00.0	145°00.0	4300	Rosette/Bongo/Mooring

Present sampling

Our present sampling consists of the following:

Station type: CTD

A CTD cast is done to 2000 dbar. The standard CTD measurements are:

• Temperature
• Conductivity
• Transmissivity
• Fluorescence
• Dissolved Oxygen

No water samples are taken except for a "Surface" sample at 5 dbar for Nutrients, Salinity, and Chlorophyll.

Station type: Rosette/Bongo

A "deep rosette" cast is done down to 10 m above the ocean floor. The CTD measurements listed above are recorded. In addition, water samples are taken for:

• Dissolved Oxygen
• Dissolved Inorganic Carbon
• Alkalinity
• pH
• Nutrients (Nitrate plus Nitrite, Phosphate, Silicate)
• Salinity

These samples are collected at the following pressures: 5, 10, 25, 50, 75, 100, 125, 150, 175, 200, 250, 300, 400, 600, 800, 1000, 1250, 1500, 2000, 2500, 3000, 3500, 4000 dbar and 10 m above the ocean floor.
A "shallow rosette" cast is done down to 200 dbar.

In addition to the CTD measurements listed above, Irradiance (PAR) is also recorded. Water samples are taken for:

• DMS (Dimethylsulfide)
• DMSP-d (Dimethylsulfoniopropionate dissolved)
• DMSP-t (Dimethylsulfoniopropionate total)
• Nutrients (Nitrate plus Nitrite, Phosphate, Silicate)
• Chlorophyll
• HPLC (Phytoplankton Pigment Concentrations)

These samples are collected at the following pressures: 0, 5, 10, 15, 20, 25, 30, 40, 50, 75, 100, 175, 200, 300 dbar.
A vertical net haul is performed down to 250 m using a set of Bongos with a mesh size of 236 µm.

Principal Participants and Collaborators

Fisheries and Oceans Canada
Environment Canada/Canadian Wildlife Services
University of British Columbia
University of Victoria
Université Laval
University of Washington
NOAA
Oregon State University
University of Arizona
University of California - Berkeley
California State University - San Marcos
University of Maryland

Fisheries and Oceans Canada:

Marie Robert                  Program Coordinator, Physical Oceanography
Dr. Bill Crawford              Physical Oceanography
Dr. Jim Christian              Biogeochemistry
Dr. Howard Freeland        Physical Oceanography, ARGO
Dr. Sophia Johannessen    pCO₂
Dr. Dave Mackas             Zooplankton
Dr. Lisa Miller                  Dissolved Inorganic Carbon, Alkalinity, pH
Dr. Angelica Peña            Phytoplankton, HPLC
Kyle Simpson                  Trace metals, carbonate chemistry
Dr. Nadja Steiner             DMS, DMSP

Canadian Wildlife Service of Environment Canada:

Ken Morgan              Marine birds and mammals observation

University of British Columbia:

Dr. Roger François     Marine Geochemistry
Dr. Steven Hallam      Microbiology & Immunology
Dr. Maite Maldonado   Phytoplankton-Trace Metal-Physiology
Dr. Kristin Orians        Chemical Oceanography-Trace Metal
Dr. Philippe Tortell      Biological Oceanography-Marine Biogeochemistry-Microbial Ecology and Evolution

University of Victoria:

Dr. Jay Cullen            Trace Metal
Dr. John Dower          Zooplankton Ecology
Dr. Damian Grundle
Dr. Roberta Hamme     Gases cycles
Dr. Jody Klymak          Ocean flows - Waves - Turbulence - Fronts - Eddies
Dr. Diana Varela         Marine Primary Productivity - Cycling of Nutrients

Université Laval:

Dr. Maurice Levasseur   Plankton/Climate interactions - Asian dusts - DMS

University of Washington

Dr. Ginger Armbrust      Phytoplankton - Bacterial/Phytoplankton interactions
Dr. Steve Emerson       Marine Chemistry - Environmental Geochemistry
Dr. Charlie Eriksen        Seagliders

NOAA

Dr. Meghan Cronin       Mooring designer

Oregon State University

Dr. Ricardo Letellier
Dr. Toby Westberry

University of Arizona - Tucson

Dr. Matthew Sullivan    Metagenomics

University of California - Berkeley

Dr. Jim Bishop             Carbon Explorer program

California State University - San Marcos

Dr. Victoria Fabry

University of Maryland

Dr. Johan Schijf