Preprints
https://doi.org/10.5194/essd-2023-349
https://doi.org/10.5194/essd-2023-349
09 Oct 2023
 | 09 Oct 2023
Status: a revised version of this preprint was accepted for the journal ESSD and is expected to appear here in due course.

LamaH-Ice: LArge-SaMple Data for Hydrology and Environmental Sciences for Iceland

Hordur Bragi Helgason and Bart Nijssen

Abstract. Access to mountainous regions for monitoring streamflow, snow and glaciers is often difficult, and many rivers are thus not gauged and hydrological measurements are limited. Consequently, cold-region watersheds, particularly heavily glacierized ones, are poorly represented in large-sample hydrology (LSH) datasets. We present a new LSH dataset for Iceland, termed LamaH-Ice (LArge-SaMple DAta for Hydrology and Environmental Sciences for Iceland). Glaciers and ice caps cover about 10 % of Iceland and while streamflow has been measured for several decades, these measurements have not been published in a consistent manner before. The dataset provides daily and hourly hydrometeorological timeseries and catchment characteristics for 107 river basins in Iceland, covering an area of almost 46,000 km2 (45 % of Iceland’s area), with catchment sizes ranging from 4 to about 7,500 km2. LamaH-Ice conforms to the structure of existing LSH datasets and includes most variables offered in these datasets, as well as additional information relevant to cold-region hydrology, e.g., timeseries of snow cover, glacier mass balance and albedo. LamaH-Ice also includes dynamic catchment characteristics to account for changes in land cover, vegetation, and glacier extent. A large majority of the watersheds in LamaH-Ice are not subject to human activities, such as diversions and flow regulations. Streamflow measurements under natural flow conditions are highly valuable to hydrologists seeking to model and comprehend the natural hydrological cycle or estimate climate change trends. The LamaH-Ice dataset (Helgason and Nijssen, 2023) is intended for the research community to improve the understanding of hydrology in cold-region environments.

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Hordur Bragi Helgason and Bart Nijssen

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on essd-2023-349', Christoph Klingler, 20 Oct 2023
  • RC1: 'Comment on essd-2023-349', Alexa Hinzman, 31 Oct 2023
  • RC2: 'Comment on essd-2023-349', Anonymous Referee #2, 11 Dec 2023
  • AC1: 'Comment on essd-2023-349', Hörður Bragi Helgason, 09 Feb 2024

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on essd-2023-349', Christoph Klingler, 20 Oct 2023
  • RC1: 'Comment on essd-2023-349', Alexa Hinzman, 31 Oct 2023
  • RC2: 'Comment on essd-2023-349', Anonymous Referee #2, 11 Dec 2023
  • AC1: 'Comment on essd-2023-349', Hörður Bragi Helgason, 09 Feb 2024
Hordur Bragi Helgason and Bart Nijssen

Data sets

LamaH-Ice: LArge-SaMple Data for Hydrology and Environmental Sciences for Iceland Hordur B. Helgason, Bart Nijssen https://www.hydroshare.org/resource/86117a5f36cc4b7c90a5d54e18161c91/

Hordur Bragi Helgason and Bart Nijssen

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Short summary
LamaH-Ice is a large-sample hydrology (LSH) dataset for Iceland. The dataset includes daily and hourly hydro-meteorological timeseries, including observed streamflow, and basin characteristics for 107 basins. LamaH-Ice offers most variables that are included in existing LSH datasets, as well as additional information relevant to cold-region hydrology such as annual time series of glacier extent and mass balance. A large majority of the basins in LamaH-Ice are unaffected by human activities.
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