論文

査読有り
2020年11月14日

Greenland liquid water discharge from 1958 through 2019

Earth System Science Data
  • Kenneth D. Mankoff
  • ,
  • Brice Noël
  • ,
  • Xavier Fettweis
  • ,
  • Andreas P. Ahlstrøm
  • ,
  • William Colgan
  • ,
  • Ken Kondo
  • ,
  • Kirsty Langley
  • ,
  • Shin Sugiyama
  • ,
  • Dirk van As
  • ,
  • Robert S. Fausto

12
4
開始ページ
2811
終了ページ
2841
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.5194/essd-12-2811-2020
出版者・発行元
Copernicus GmbH

Abstract. Greenland runoff, from ice mass loss and increasing rainfall, is increasing. That runoff, as discharge, impacts the physical, chemical, and biological properties of the adjacent fjords. However, where and when the discharge occurs is not readily available in an open database. Here we provide data sets of high-resolution Greenland hydrologic outlets, basins, and streams, as well as a daily 1958 through 2019 time series of Greenland liquid water discharge for each outlet. The data include 24 507 ice marginal outlets and upstream basins and 29 635 land coast outlets and upstream basins, derived from the 100 m ArcticDEM and 150 m BedMachine. At each outlet there are daily discharge data for 22 645 d – ice sheet runoff routed subglacially to ice margin outlets and land runoff routed to coast outlets – from two regional climate models (RCMs; MAR and RACMO).
Our sensitivity study of how outlet location changes for every inland cell based on subglacial routing assumptions shows that most inland cells where runoff occurs are not highly sensitive to those routing assumptions, and outflow location does not move far. We compare RCM results with 10 gauges from streams with discharge rates spanning 4 orders of magnitude. Results show that for daily discharge at the individual basin scale the
5 % to 95 % prediction interval between modeled discharge and observations generally falls within plus or minus a factor of 5 (half an order of magnitude, or +500 %/-80 %). Results from this study are available at
https://doi.org/10.22008/promice/freshwater (Mankoff, 2020a) and code is available at http://github.com/mankoff/freshwater (last access: 6 November 2020) (Mankoff, 2020b).

リンク情報
DOI
https://doi.org/10.5194/essd-12-2811-2020
URL
https://essd.copernicus.org/articles/12/2811/2020/essd-12-2811-2020.pdf
ID情報
  • DOI : 10.5194/essd-12-2811-2020
  • eISSN : 1866-3516

エクスポート
BibTeX RIS