North Pacific High, 1967 - 2014

Variations in large-scale atmospheric forcing influence upwelling dynamics and ecosystem productivity in the California Current System (CCS). In this paper, we characterize interannual variability of the North Pacific High over 40 years and investigate how variation in its amplitude and position affect upwelling and biology. We develop a winter upwelling "pre-conditioning" index and demonstrate its utility to understanding biological processes. Variation in the winter NPH can be well described by its areal extent and maximum pressure, which in turn is predictive of winter upwelling. Our winter pre-conditioning index explained 64% of the variation in biological responses (fish and seabirds). Understanding characteristics of the NPH in winter is therefore critical to predicting biological responses in the CCS.

Data and Resources

Field Value
access_constraints []
bbox-east-long -126.5
bbox-north-lat 39.3
bbox-south-lat 23.3
bbox-west-long -158.7
coupled-resource [{"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}]
dataset-reference-date [{"type": "creation", "value": "2022-08-02"}]
guid erdNph
licence []
metadata-date 2022-08-02
metadata-language eng
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-158.7, 23.3], [-126.5, 23.3], [-126.5, 39.3], [-158.7, 39.3], [-158.7, 23.3]]]}
resource-type dataset
responsible-party [{"name": "NOAA ERD", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-158.7, 23.3], [-126.5, 23.3], [-126.5, 39.3], [-158.7, 39.3], [-158.7, 23.3]]]}
spatial-data-service-type ERDDAP tabledap
spatial_harvester true
temporal-extent-begin 1967-01-16
temporal-extent-end 2014-01-16
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • area
  • areal
  • california
  • ccs
  • center
  • centered
  • ckan
  • contour
  • current
  • data
  • extent
  • geo
  • geoss
  • high
  • hpa
  • latitude
  • level
  • longitude
  • maximum
  • month
  • national
  • noaa-erd
  • north
  • north-america
  • nph
  • pacific
  • pressure
  • sea
  • system
  • time
  • united-states
  • year
isopen False
metadata_created 2025-11-22T15:02:38.390727
metadata_modified 2025-11-22T15:02:38.390732
notes Variations in large-scale atmospheric forcing influence upwelling dynamics and ecosystem productivity in the California Current System (CCS). In this paper, we characterize interannual variability of the North Pacific High over 40 years and investigate how variation in its amplitude and position affect upwelling and biology. We develop a winter upwelling "pre-conditioning" index and demonstrate its utility to understanding biological processes. Variation in the winter NPH can be well described by its areal extent and maximum pressure, which in turn is predictive of winter upwelling. Our winter pre-conditioning index explained 64% of the variation in biological responses (fish and seabirds). Understanding characteristics of the NPH in winter is therefore critical to predicting biological responses in the CCS.
num_resources 8
num_tags 34
title North Pacific High, 1967 - 2014