Daily maps for global daylight length at 30 arc seconds resolution (2022)

Overview:

Daily maps for global daylight length, calculated for the year 2022.

Processing steps:

For each day within the year 2022, the photoperiod (sunshine hours on flat terrain) are calculated using the SOLPOS algorithm developed by the National Renewable Energy Laboratory (NREL), USA. Resultant values have been converted from hours to minutes.

File naming scheme (DDD = day within year) (min is abbreviation for minute):

daylight_min_2022_DDD.tif

Projection + EPSG code:

Latitude-Longitude/WGS84 (EPSG: 4326)

Spatial extent:

north: 90

south: -90

west: -180

east: 180

Spatial resolution:

30 arc seconds (approx. 1000 m)

Temporal resolution:

Daily

Pixel values:

unit: minutes

Software used:

GDAL 3.2.2 and GRASS GIS 8.2.0

Processed by:

mundialis GmbH & Co. KG, Germany (https://www.mundialis.de/)

Reference: National Renewable Energy Laboratory (NREL): SOLPOS 2.0 sun position algorithm (https://www.nrel.gov/grid/solar-resource/solpos.html)

Citation proposal
(2022) . Daily maps for global daylight length at 30 arc seconds resolution (2022). https://gdk.gdi-de.org/geonetwork/srv/api/records/97448e4f-e214-405a-95cc-6137f4379b6a

Identification

Data identification

Citation

Date ( Publication ): 2022-10-25

Edition

Identifier: dataset

Purpose

Status: Completed

Point of contact

mundialis GmbH & Co. KG - Markus Metz ( )

Maintenance and update frequency: As needed

Keywords ( Theme )

daylength
photoperiod
environment
meteorology
MOOD-H2020

Keywords ( Place )

Global

GEMET - INSPIRE themes, version 1.0 ( Theme )

Meteorological geographical features

Legal constraints

Use limitation: None

Access constraints: Other restrictions

Legal constraints

Use limitation

Access constraints: Other restrictions

Use constraints: License

Other constraints: Creative Commons Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International (CC-BY-SA 4.0)

Other constraints: {"id":"cc-by-sa/4.0","name":"Creative Commons Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International","url":"http://creativecommons.org/licenses/by-sa/4.0/","quelle":"Source: mundialis GmbH & Co. KG"}

Aggregate Information

Aggregate Datasetindentifier: optionally add identifier of reference dataset here

Association Type: Cross reference

Spatial representation type: Grid

Distance: 30 arc-seconds

Metadata language: English

Character set: UTF8

Topic category

Geoscientific information

Extent

Description: global

Supplemental Information

Distribution

Distribution format

GeoTIFF ( )

OnLine resource: Daily global daylight length (2022)
Daily global daylight length (2022)

Quality

Data quality

Hierarchy level: Dataset

Conformance result

Citation

Date ( Publication ): 2010-12-08

Other citation details: http://data.europa.eu/eli/reg/2010/1089/2014-12-31

Explanation: See specified reference

Pass: true

Statement: calculated with SOLPOS 2.0 sun position algorithm (https://www.nrel.gov/grid/solar-resource/solpos.html) developed by National Renewable Energy Laboratory (NREL)