Line P Program

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