Seasonal and annual dynamics of frozen ground, central highland of Iceland, Version 1

This dataset documents a nine-year study to investigate the seasonal and annual dynamics of frozen ground and explore the relationship with environmental factors. The presence/absence of frozen ground and active layer thickness were recorded three times over the growing season (4-7 July, 1-4 August, and 20-24 August) at 51 permanent points in different plant communities and on 12 palsas (Thorhallsdottir 1996, p. 237). Sample size is variable: 33 permanent measurement stations in 1983, 29 in 1984, 63 in 1985-1991. Active layer depth measurement sites averaged 51 over the span of the data set. Data include mean active layer depth (and standard error) in early July and early August (for palsas and with palsas excluded); monthly degree days above zero, precipitation, snow depth, and frost degree days (i.e., below zero.) Data are presented on the CAPS Version 1.0 CD-ROM, June 1998.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 23, 2026, 03:14 (UTC)
Created April 1, 2025, 18:52 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id cdbad491-71a0-435a-b18f-65de211f159e
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.7265/m78z-mn18
license https://www.usa.gov/government-works
modified 2026-06-15T22:16:03Z
programCode {026:000}
publisher NSIDC
resource-type Dataset
source_datajson_identifier true
source_hash a8afa9de5098d399136d804c4e5351b5f7f6d80fb2489b51dca7b732e1d79a41
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -18.667, "NorthBoundingCoordinate": 64.5, "EastBoundingCoordinate": -18.667, "SouthBoundingCoordinate": 64.5}]]
temporal 1983-01-01/1991-12-31
theme {"Earth Science"}