Pacific Northwest Index (PNI)

Available as - [Outline] - [SGML]

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Ebbesmeyer and Strickland (1995), University of Washington
Publication_Date: On-line
Title: Pacific Northwest Index (PNI)
Geospatial_Data_Presentation_Form: Tables; Graphs Delivery Format: On-line
Online_Linkage: <http://www.cqs.washington.edu/data/pni.html>
Description:
Abstract:
"The Pacific Northwest Index (PNI), developed by Ebbesmeyer and Strickland (1995), is a terrestrial climate index useful for studying climate effects on salmon productivity trends. It is a composite index that characterizes Pacific Northwest climate patterns in both coastal waters and freshwater habitats. In addition, it is a century-long record. A composite climate index is an effective measurement because many environmental parameters in the Northwest are statistically related to one another; consequently, they may be combined to furnish a broad-scale understanding of the state of the Pacific Northwest environment. The PNI uses three parameters: 1) air temperature at Olga in the San Juan Islands, averaged annually from daily data; 2) total precipitation at Cedar Lake in the Cascade Mountains; and 3) snowpack depth at Paradise on Mount Rainier on March 15 of each year. For each parameter, annual values were normalized by subtracting the average of all years and dividing by the standard deviation. Finally, the three variables are averaged yearly giving a relative indicator of the variations in climate. Years with positive values of the PNI are warmer and dryer than average and those with negative values are cooler and wetter than average."

-- Taken from PNI web site

Supplemental_Information:
Metadata Contact: Sara Breslow Location: Pacific Northwest Spatial Resolution: Stations Temporal Resolution: Annually Related Papers: Ebbesmeyer, C.C. and R.M. Strickland. 1995. Oyster Condition and Climate: Evidence from Willapa Bay. Publication WSG-MR 95-02, Washington Sea Grant Program, University of Washington, Seattle, WA. 11p.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1893
Ending_Date: 1997
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -124
East_Bounding_Coordinate: -121
North_Bounding_Coordinate: 49
South_Bounding_Coordinate: 46.5
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Meteorology
Theme_Keyword: Climatology
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Year
Theme_Keyword: Pacific Northwest Index
Theme_Keyword: Air Temperature
Theme_Keyword: Precipitation
Theme_Keyword: Snowpack Depth
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Salmon Productivity
Theme_Keyword: Coastal
Theme_Keyword: Freshwater
Theme_Keyword: Climate
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Coastal
Place_Keyword: Pacific Northwest
Place_Keyword: Pacific
Place_Keyword: United States
Place_Keyword: Northwest
Place_Keyword: Coast
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Columbia Basin Research, University of Washington
Contact_Position: DART Coordinator
Contact_Electronic_Mail_Address: cress@fergie.cqs.washington.edu

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Columbia Basin Research, University of Washington
Contact_Position: DART Coordinator
Contact_Electronic_Mail_Address: cress@fergie.cqs.washington.edu

Metadata_Reference_Information:
Metadata_Date: 19990601
Metadata_Review_Date:
Metadata_Future_Review_Date:

Generated by mp version 2.4.10 on Thu Sep 28 12:56:45 2000