Identification

Title

Daily Northern Hemisphere Sea Level Pressure Grids, continuing from 1899

Alternative title(s)

d010000

Abstract

<p>The 5-degree latitude/longitude grids contained in this dataset make up the longest continuous set of daily gridded Northern Hemisphere sea-level pressure data in the DSS archive. These grids have been assembled by DSS from the grids of <a href="https://rda.ucar.edu/OS/web/datasets/d010000/docs/data_sources"> various meteorological chart digitization projects and operational analyses</a>. Grids begin in 1899 and cover the Northern Hemisphere from 15N to the North Pole. The dataset continues to be updated regularly as new data become available. </p> <p>In the earlier years, there is one grid per day, but from July 1962 on, there are two grids per day. Prior to 1946, the original grids had a 10-degree resolution and the intermediate points were interpolated and indicated as such. Also in this period, there are times when large numbers of gridpoints are missing, particularly over the Asian continent. For more information, see the <a href="https://rda.ucar.edu/datasets/d010000/documentation/"> documentation</a> about original data points. </p>

Resource type

dataset

Resource locator

https://gdex.ucar.edu/datasets/d010000/

protocol: https

name: Dataset Description

description: Related Link

function: information

https://gdex.ucar.edu/datasets/d010000/dataaccess/

protocol: https

name: Data Access

description: Related Link

function: download

Unique resource identifier

code

codeSpace

Dataset language

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

reference date

date type

revision

effective date

2021-03-30

Keyword set

keyword value

GRIDDING METHODS

MAPS > MAPS

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-09

Keyword set

keyword value

ESSPO > 433L ESSPO

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-09

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-09

Geographic location

West bounding longitude

-180.0

East bounding longitude

180.0

North bounding latitude

90.0

South bounding latitude

15.0

Temporal reference

Temporal extent

Begin position

1899-01-01T1300+00

End position

2025-10-16T1200+00

Dataset reference date

date type

publication

effective date

1979-12-05

Frequency of update

notPlanned

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

NSF NCAR Geoscience Data Exchange

email address

datahelp@ucar.edu

web address

https://gdex.ucar.edu

name: NSF NCAR Geoscience Data Exchange

description: The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research.

function: download

responsible party role

pointOfContact

Metadata date

2025-10-17T02:05:02Z

Metadata language