Table of Contents

• Coverage
• Dataset Description
  • Methods & Sampling
• Data Files
• Parameters
• Instruments
• Deployments
• Project Information
• Program Information
• Funding

CTD Rosette Bottle Data from 2002 GLOBEC NEP cruises:
New Horizon Cruise (NH0207: 1-19 August 2002)
Wecoma Cruise (W0205: 29 May - 18 June 2002)

Notes:
Physical data processed by Jane Fleischbein (OSU).
Chlorophyll readings done by Leah Feinberg (OSU).
Nutrient analysis done by Burke Hales (OSU).

Summary prepared (22 July 2003) by: Hal Batchelder, Oregon State University, Corvallis, OR 97331-503. hbatchelder@coas.oregonstate.edu

Metadata Last updated 23 May 2012 (reformatting)

Nutrient samples were collected from most bottles; all nutrient data developed from samples frozen during the cruise and analyzed ashore; data developed by Burke Hales (OSU).
Sal00 - salinity calculated from primary sensors (C0,T0).
Sal11 - salinity calc. from secondary sensors (C1,T1).
Secondary sensor pair was used in final processing of CTD data for most stations because the primary had more noise and spikes. The primary pair were used for cast# 9,24,48,111 and 150 due to multiple spikes or offsets in the secondary pair.

Operation Detection Limits for Nutrient Concentrations (Units are micromoles per liter):
PO4 Range: 0.003-0.004; Mean = 0.004.
NO3+NO2 Range: 0.04-0.08; Mean = 0.06.
Si(OH)4 Range: 0.13-0.24; Mean=0.16.
NO2 Range: 0.003-0.004; Mean = 0.003.

Program in a Nutshell

Goal: To understand the effects of climate variability and climate change on the distribution, abundance and production of marine animals (including commercially important living marine resources) in the eastern North Pacific. To embody this understanding in diagnostic and prognostic ecosystem models, capable of capturing the ecosystem response to major climatic fluctuations.

Approach: To study the effects of past and present climate variability on the population ecology and population dynamics of marine biota and living marine resources, and to use this information as a proxy for how the ecosystems of the eastern North Pacific may respond to future global climate change. The strong temporal variability in the physical and biological signals of the NEP will be used to examine the biophysical mechanisms through which zooplankton and salmon populations respond to physical forcing and biological interactions in the coastal regions of the two gyres. Annual and interannual variability will be studied directly through long-term observations and detailed process studies; variability at longer time scales will be examined through retrospective analysis of directly measured and proxy data. Coupled biophysical models of the ecosystems of these regions will be developed and tested using the process studies and data collected from the long-term observation programs, then further tested and improved by hindcasting selected retrospective data series.

U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.

The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).