Towards dedicated snow modelling in the Arctic that allows quantification of the impact of light absorbing impurities in snow ... : Auf dem Weg zu einer geeigneten Schneemodellierung in der Arktis, die eine Quantifizierung von lichtabsorbierenden Verunreinigungen im Schnee ermöglicht ...
Snow is an important factor in the Earth System as it influences the global energy balance due to its high albedo. Light-absorbing impurities (LAI) in snow reduce its albedo, leading to enhanced absorption of shortwave radiation that warms the snowpack and stimulates feedback mechanisms that are par...
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| Format: | Doctoral or Postdoctoral Thesis |
| Language: | English |
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Universität Bremen
2023
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| Online Access: | https://dx.doi.org/10.26092/elib/2829 https://media.suub.uni-bremen.de/handle/elib/7747 |
| Summary: | Snow is an important factor in the Earth System as it influences the global energy balance due to its high albedo. Light-absorbing impurities (LAI) in snow reduce its albedo, leading to enhanced absorption of shortwave radiation that warms the snowpack and stimulates feedback mechanisms that are partly responsible for faster warming of the Arctic than in any other part of the world. However, to date there is a lack of sufficient measurements to quantify the concentrations of LAI in Arctic snow, their seasonal evolution and trends. Therefore, it is difficult to investigate, quantify and understand the effects of LAI in snow on the evolution of snow properties, including the snow albedo, associated feedback mechanisms and the radiative forcing, especially in remote areas. To address this gap, models simulating the evolution of snow properties taken into account the effects of LAI on the radiative energy balance can be applied. However, reliable measurements to force these simulations, i.e. reliable deposition ... |
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