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  • 1
    Online Resource
    Online Resource
    10 years of mass-balance measurements along a transect near Kangerlussuaq, central West Greenland
    International Glaciological Society ; 2001
    In:  Journal of Glaciology Vol. 47, No. 156 ( 2001), p. 157-158
    Details
    In: Journal of Glaciology, International Glaciological Society, Vol. 47, No. 156 ( 2001), p. 157-158
    Type of Medium: Online Resource
    ISSN: 0022-1430 , 1727-5652
    URL: Article
    DOI: 10.3189/172756501781832458
    Language: English
    Publisher: International Glaciological Society
    Publication Date: 2001
    detail.hit.zdb_id: 2140541-4
    SSG: 14
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  • 2
    Online Resource
    Online Resource
    Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations
    International Glaciological Society ; 1992
    In:  Journal of Glaciology Vol. 38, No. 129 ( 1992), p. 233-244
    Details
    In: Journal of Glaciology, International Glaciological Society, Vol. 38, No. 129 ( 1992), p. 233-244
    Abstract: In this study, an attempt is made to simulate the historical length variations of Hintereisferner (Austria). Key elements in the model are: (1) reconstruction of the local climate (Vent); (2) multiple linear regression analysis between measured climate and mass-balance variations; (3) reconstruction of the mass balance with (1) and (2); (4) a one-dimensional numerical ice-flow model forced by the mass-balance history. Progress relative to the previous, similar studies can be summarized as two points: (1) the mass balance is reconstructed more carefully, and (2) sensitivity experiments show that uncertainties and assumptions in the flow model hardly affect the response of the glacier to climate fluctuations with a time-scale of the order of (or larger than) the response time of the glacier (around 100 year). In the regression equation, mass-balance fluctuations are determined by the temperature during the ablation season and the annual precipitation. Cloudiness has no effect. The local temperature can be reconstructed as far back as 1755 with the temperature series from Basel, but the reconstruction of precipitation is unreliable prior to 1900. Mainly due to this point, a simulation starting in 1755 failed completely. However, in a run starting in 1894, the total retreat since then (2.2 km) was reproduced within 10%.
    Type of Medium: Online Resource
    ISSN: 0022-1430 , 1727-5652
    URL: Article
    DOI: 10.3189/S0022143000003646
    Language: English
    Publisher: International Glaciological Society
    Publication Date: 1992
    detail.hit.zdb_id: 2140541-4
    SSG: 14
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  • 3
    Online Resource
    Online Resource
    Modelling the evolution of supraglacial lakes on the West Greenland ice-sheet margin
    International Glaciological Society ; 2006
    In:  Journal of Glaciology Vol. 52, No. 179 ( 2006), p. 608-618
    Details
    In: Journal of Glaciology, International Glaciological Society, Vol. 52, No. 179 ( 2006), p. 608-618
    Abstract: We present a model study investigating the summer evolution of supraglacial lakes on the Greenland ice margin. Using a one-dimensional (1-D) model we calculate the surface ablation for a bare ice surface and beneath supraglacial lakes for 30 days in the summers of 1999 and 2001. The surface ablation beneath the lake was enhanced by 110% in 1999 and 170% in 2001 compared with the ablation for bare ice. We then use the results from the 1-D model to further model the vertical and horizontal evolution of the supraglacial lakes, the results of which are compared with satellite images. Within the region of the ice sheet where supraglacial lakes presently occur, the area covered by supraglacial lakes is found to be more or less independent of the summer melt rate but controlled by topography. We therefore predict that, inside this region, the area covered by supraglacial lakes will remain constant even in a warmer climate. However, in a warmer climate, surface melting will occur higher on the ice sheet where small surface slopes favour formation of large supraglacial lakes. Enhanced surface melting beneath such lakes is a hitherto overlooked feedback mechanism related to climate warming.
    Type of Medium: Online Resource
    ISSN: 0022-1430 , 1727-5652
    URL: Article
    DOI: 10.3189/172756506781828386
    Language: English
    Publisher: International Glaciological Society
    Publication Date: 2006
    detail.hit.zdb_id: 2140541-4
    SSG: 14
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  • 4
    Online Resource
    Online Resource
    Numerical modelling of the energy balance and the englacial temperature of the Greenland Ice Sheet. Calculations for the ETH-Camp location (West Greenland, 1155 m a.s.l.)
    Elsevier BV ; 1994
    In:  Global and Planetary Change Vol. 9, No. 1-2 ( 1994-01), p. 91-114
    Details
    In: Global and Planetary Change, Elsevier BV, Vol. 9, No. 1-2 ( 1994-01), p. 91-114
    Type of Medium: Online Resource
    ISSN: 0921-8181
    URL: Article
    DOI: 10.1016/0921-8181(94)90010-8
    RVK:
    RA 1000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 1994
    detail.hit.zdb_id: 20361-0
    detail.hit.zdb_id: 2016967-X
    SSG: 13
    SSG: 14
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  • 5
    Online Resource
    Online Resource
    Seasonal streamflow forecasts for Europe – Part 2: Sources of skill
    Copernicus GmbH ; 2019
    In:  Hydrology and Earth System Sciences Vol. 23, No. 1 ( 2019-01-22), p. 371-391
    Details
    In: Hydrology and Earth System Sciences, Copernicus GmbH, Vol. 23, No. 1 ( 2019-01-22), p. 371-391
    Abstract: Abstract. This paper uses hindcasts (1981–2010) to investigate the sources of skill in seasonal hydrological forecasts for Europe. The hindcasts were produced with WUSHP (Wageningen University Seamless Hydrological Prediction system). Skill was identified in a companion paper. In WUSHP, hydrological processes are simulated by running the Variable Infiltration Capacity (VIC) hydrological model forced with an ensemble of bias-corrected output from the seasonal forecast system 4 (S4) of the European Centre for Medium-Range Weather Forecasts (ECMWF). We first analysed the meteorological forcing. The precipitation forecasts contain considerable skill for the first lead month but hardly any significant skill at longer lead times. Seasonal forecasts of temperature have more skill. Skill in summer temperature is related to climate change and is more or less independent of lead time. Skill in February and March is unrelated to climate change. Different sources of skill in hydro-meteorological variables were isolated with a suite of specific hydrological hindcasts akin to ensemble streamflow prediction (ESP). These hindcasts show that in Europe, initial conditions of soil moisture (SM) form the dominant source of skill in run-off. From April to July, initial conditions of snow contribute significantly to the skill. Some remarkable skill features are due to indirect effects, i.e. skill due to forcing or initial conditions of snow and soil moisture at an earlier stage is stored in the hydrological state (snow and/or soil moisture) of a later stage, which then contributes to persistence of skill. Skill in evapotranspiration (ET) originates mostly in the meteorological forcing. For run-off we also compared the full hindcasts (with S4 forcing) with two types of ESP (or ESP-like) hindcasts (with identical forcing for all years). Beyond the second lead month, the full hindcasts are less skilful than the ESP (or ESP-like) hindcasts, because inter-annual variations in the S4 forcing consist mainly of noise which enhances degradation of the skill.
    Type of Medium: Online Resource
    ISSN: 1607-7938
    URL: Article
    URL: Article
    DOI: 10.5194/hess-23-371-2019
    DOI: 10.5194/hess-23-371-2019-supplement
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2019
    detail.hit.zdb_id: 2100610-6
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  • 6
    Online Resource
    Online Resource
    Parameterization of global and longwave incoming radiation for the Greenland Ice Sheet
    Elsevier BV ; 1994
    In:  Global and Planetary Change Vol. 9, No. 1-2 ( 1994-01), p. 143-164
    Details
    In: Global and Planetary Change, Elsevier BV, Vol. 9, No. 1-2 ( 1994-01), p. 143-164
    Type of Medium: Online Resource
    ISSN: 0921-8181
    URL: Article
    DOI: 10.1016/0921-8181(94)90013-2
    RVK:
    RA 1000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 1994
    detail.hit.zdb_id: 20361-0
    detail.hit.zdb_id: 2016967-X
    SSG: 13
    SSG: 14
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    Online Resource
  • 7
    Online Resource
    Online Resource
    Retrieval and validation of global, direct, and diffuse irradiance derived from SEVIRI satellite observations
    American Geophysical Union (AGU) ; 2013
    In:  Journal of Geophysical Research: Atmospheres Vol. 118, No. 5 ( 2013-03-16), p. 2340-2361
    Details
    In: Journal of Geophysical Research: Atmospheres, American Geophysical Union (AGU), Vol. 118, No. 5 ( 2013-03-16), p. 2340-2361
    Abstract: SICCS retrieves irradiance with excellent temporal and spatial resolution. SICCS estimates direct, diffuse, and global irradiance with very good accuracy. The results are relatively insensitive to variations in input variables.
    Type of Medium: Online Resource
    ISSN: 2169-897X , 2169-8996
    URL: Issue
    URL: Article
    DOI: 10.1002/jgrd.v118.5
    DOI: 10.1002/jgrd.50194
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2013
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    detail.hit.zdb_id: 2016800-7
    detail.hit.zdb_id: 2969341-X
    SSG: 16,13
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  • 8
    Online Resource
    Online Resource
    Surface albedo measurements over snow and blue ice in thematic mapper bands 2 and 4 in Dronning Maud Land, Antarctica
    American Geophysical Union (AGU) ; 2001
    In:  Journal of Geophysical Research: Atmospheres Vol. 106, No. D9 ( 2001-05-16), p. 9661-9672
    Details
    In: Journal of Geophysical Research: Atmospheres, American Geophysical Union (AGU), Vol. 106, No. D9 ( 2001-05-16), p. 9661-9672
    Abstract: Ground‐based observations of broadband, narrowband (in Landsat thematic mapper bands 2, 0.52–0.60 μm, and 4, 0.76–0.90 μm), and bidirectional reflectance are used to study the albedo of blue ice and snow. The measured broadband albedos for blue ice and snow are 0.60 and 0.78, respectively. The narrowband albedos in bands 2 and 4 for snow are 0.97 and 0.86, respectively, and for blue ice are 0.87 and 0.51, respectively. The measurements are point values and used to verify existing weighting functions between the broadband and narrowband albedos. Blue ice data do not comply with the existing functions. Furthermore, a new function for blue ice is derived. A simple two‐stream model is used to illustrate the behavior of the snow and ice albedo as a function of reflection and absorption. The bidirectional reflectance measurements are used to derive bidirectional reflectance distribution functions (BRDFs) for snow and blue ice. The BRDF of blue ice exhibits a maximum brightening in the forward limb around a zenith angle close to the solar zenith angle, indicating specular reflectance of blue ice which is not visible for snow and glacier ice surfaces.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2000JD900718
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2001
    detail.hit.zdb_id: 2033040-6
    detail.hit.zdb_id: 3094104-0
    detail.hit.zdb_id: 2130824-X
    detail.hit.zdb_id: 2016813-5
    detail.hit.zdb_id: 2016810-X
    detail.hit.zdb_id: 2403298-0
    detail.hit.zdb_id: 2016800-7
    detail.hit.zdb_id: 161666-3
    detail.hit.zdb_id: 161667-5
    detail.hit.zdb_id: 2969341-X
    detail.hit.zdb_id: 161665-1
    detail.hit.zdb_id: 3094268-8
    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016804-4
    detail.hit.zdb_id: 3094181-7
    detail.hit.zdb_id: 3094219-6
    detail.hit.zdb_id: 3094167-2
    detail.hit.zdb_id: 2220777-6
    detail.hit.zdb_id: 3094197-0
    SSG: 16,13
    Location Call Number Limitation Availability
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    Online Resource
  • 9
    Online Resource
    Online Resource
    Vulnerabilities and resilience of European power generation to 1.5 °C, 2 °C and 3 °C warming
    IOP Publishing ; 2018
    In:  Environmental Research Letters Vol. 13, No. 4 ( 2018-04-01), p. 044024-
    Details
    In: Environmental Research Letters, IOP Publishing, Vol. 13, No. 4 ( 2018-04-01), p. 044024-
    Type of Medium: Online Resource
    ISSN: 1748-9326
    URL: Article
    DOI: 10.1088/1748-9326/aab211
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 2255379-4
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  • 10
    Online Resource
    Online Resource
    Hintereisferner, Austria: mass-balance reconstruction and numerical modelling of the historical length variations
    Cambridge University Press (CUP) ; 1992
    In:  Journal of Glaciology Vol. 38, No. 129 ( 1992), p. 233-244
    Details
    In: Journal of Glaciology, Cambridge University Press (CUP), Vol. 38, No. 129 ( 1992), p. 233-244
    Abstract: In this study, an attempt is made to simulate the historical length variations of Hintereisferner (Austria). Key elements in the model are: (1) reconstruction of the local climate (Vent); (2) multiple linear regression analysis between measured climate and mass-balance variations; (3) reconstruction of the mass balance with (1) and (2); (4) a one-dimensional numerical ice-flow model forced by the mass-balance history. Progress relative to the previous, similar studies can be summarized as two points: (1) the mass balance is reconstructed more carefully, and (2) sensitivity experiments show that uncertainties and assumptions in the flow model hardly affect the response of the glacier to climate fluctuations with a time-scale of the order of (or larger than) the response time of the glacier (around 100 year). In the regression equation, mass-balance fluctuations are determined by the temperature during the ablation season and the annual precipitation. Cloudiness has no effect. The local temperature can be reconstructed as far back as 1755 with the temperature series from Basel, but the reconstruction of precipitation is unreliable prior to 1900. Mainly due to this point, a simulation starting in 1755 failed completely. However, in a run starting in 1894, the total retreat since then (2.2 km) was reproduced within 10%.
    Type of Medium: Online Resource
    ISSN: 0022-1430 , 1727-5652
    URL: Article
    DOI: 10.1017/S0022143000003646
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 1992
    detail.hit.zdb_id: 2140541-4
    SSG: 14
    Location Call Number Limitation Availability
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    Online Resource
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