Identification

Title

North Pacific (NP) Index by Trenberth and Hurrell; Monthly and Winter

Abstract

The North Pacific Index (NP index or NPI) is the area-weighted sea level pressure over the region 30°N-65°N, 160°E-140°W. The NP index is defined to measure interannual to decadal variations in the atmospheric circulation. The dominant atmosphere-ocean relation in the North Pacific is one where atmospheric changes lead changes in sea surface temperatures by one to two months. However, strong ties exist with events in the tropical Pacific, with changes in tropical Pacific SSTs leading SSTs in the north Pacific by three months.

Resource type

dataset

Resource locator

Unique resource identifier

code

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

climatologyMeteorologyAtmosphere

Keywords

Keyword set

keyword value

Dataset

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2017-05-10

Keyword set

keyword value

EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > NORTH PACIFIC PATTERN > NP

originating controlled vocabulary

title

GCMD

reference date

date type

revision

effective date

2017-07-18

Geographic location

West bounding longitude

160

East bounding longitude

-140

North bounding latitude

65

South bounding latitude

30

Temporal reference

Temporal extent

Begin position

1899-01-01

End position

2017-08-31

Dataset reference date

date type

publication

effective date

1995-01-01

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

TXT

version of format

Constraints related to access and use

Constraint set

Use constraints

Dash and its services comply with policies set by UCAR and NCAR.

Limitations on public access

NP Index Data provided by the Climate Analysis Section, NCAR, Boulder, USA, Trenberth and Hurrell (1994). Updated Regularly. Accessed DD Month YYYY [list date you accessed the data].

Responsible organisations

Responsible party

contact position

Associate Scientist

organisation name

UCAR/NCAR - Climate and Global Dynamics Laboratory

email address

asphilli@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

organisation name

UCAR/NCAR - Climate and Global Dynamics Laboratory

email address

asphilli@ucar.edu

responsible party role

pointOfContact

Metadata date

2023-11-12T10:05:02

Metadata language

eng