WP2: Cryosphere changes

 

WP-leader: Frank Berninger, email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Co-WP-leader: Gerrit de Leeuw, email: gerrit.leeuw (at) fmi.fi

Co-WP-leader: Matti Leppäranta, email: matti.lepparanta (at) helsinki.fi

Co-WP-leader: Knut Alfredsen, email: knut.alfredsen (at) ntnu.no

 

Ice workshop in ASLO 2015:

*041 - LONG TERM CHANGES IN LAKE ICE DYNAMICS - ECOLOGICAL RESPONSE, MONITORING, AND SIMULATION* at the *
2015 ASLO Aquatic Sciences Meeting:* Aquatic sciences: Global and regional perspectives -- North meets South, *Granada, Spain, 22-27 February 2015*

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Aims

-   short and long term variability of the surface albedo, in particular deposition of aerosols and snow and ice cover changes

-   the long and short term variability of reflected radiation and near-surface heat transport in relation to changes in surface albedo and snow/ice cover, aerosol concentrations, and cloud cover and properties

-   changes in precipitation and its effects on the radiation balance in the cryosphere and on lakes and rivers

-   the evolution of snow and ice climatological zones

-   the influence of changing ice conditions on boreal and arctic lakes and wintertime utilization of lakes

-   the impact of changing climate to the coastal zone and river basins, and implications to power plants, flooding and water quality in Baltic region

To achieve these objectives, we use satellite and ground based remote sensing techniques. Surface albedo, areal extent of snow, radiation at the top of the atmosphere, and trace gas (e.g., BrO) column concentrations will be determined using Optical/IR instruments. Microwave radar and radiometers are used to measure snow water equivalent, sea ice, the presence of open leads and precipitation characteristics. Ground based remote sensing measurements include tower based surface albedo, microwave emission and backscattering observations at FMI-ARC, radiation measurements from the existing networks. Snow and ice investigations are based on test areas across Nordic region. Lab experiments will be performed for small-scale process studies. Existing cryosphere models and new models to be developed will be worked on for a common interface toward other components in ESMs (WP8).