Search for dissertations about: "winter warming events"

Showing result 1 - 5 of 15 swedish dissertations containing the words winter warming events.

2. 1. The Torneträsk System - A basis for predicting future subarctic ecosystems

   Author : Didac Pascual; BECC: Biodiversity and Ecosystem services in a Changing Climate; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; climate change; carbon fluxes; ecosystem change; climate projections; rain on snow; modelling; impacts; snow; permafrost; winter warming events;

   Abstract : Arctic and subarctic areas have experienced a rapid warming and substantial increases in precipitation in recent decades. The frequency and intensity of some extreme events, such as fires, winter warming events, extreme rainfall, and droughts, has also increased. READ MORE

4. 2. Quantifying the impact of winter warming on the Arctic carbon cycle

   Author : Alexandra Pongrácz; BECC: Biodiversity and Ecosystem services in a Changing Climate; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic; snow; permafrost; LPJ-GUESS; non-growing season; carbon cycling; LPJ-GUESS; Arctic; permafrost; snow; carbon cycling; non-growing season;

   Abstract : The Arctic has undergone extreme changes during the last decades and is warming over twice the global average. There has been increasing interest in understanding how warming and changes in snow and rainfall will affect high-latitude ecosystems. READ MORE

5. 3. Modelling impact climate-related change on the thermal responses of lakes

   Author : Ana I. Ayala; Donald C. Pierson; Stéphane Goyette; Andreas Lorke; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Modelling; climate change; lakes; thermal structure; surface heat fluxes; extreme events;

   Abstract : In response to climate-related changes, lakes worldwide have experienced warmer surface water temperatures, shorter ice cover periods and changes in lake stratification. As these aspects of lake dynamics exert substantial control over nutrient availability, oxygenation and biogeochemical cycling, predicting changes in lake water temperature and stratification dynamics can improve our understanding of the consequences of warming on lake ecosystems. READ MORE

6. 4. On the atmospheric transport pathways of heat into the Arctic in winter and spring

   Author : Sonja Murto; Rodrigo Caballero; Gunilla Svensson; Dörthe Handorf; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic climate; Blocking; Warm-air intrusions; Surface energy budget; Melt onset; MOSAiC; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

   Abstract : The atmospheric meridional energy transport is an important component in the global climate system, as it transports moisture and heat from the midlatitudes into the Arctic, balancing the regional energy loss to space. Narrow and intense injections of warm and moist air, so-called warm-air intrusions, have a large local imprint on the surface through various processes acting on different scales, such as cloud formation, turbulent fluxes and atmospheric large-scale circulation. READ MORE

7. 5. Tree phenology modelling in the boreal and temperate climate zones : Timing of spring and autumn events

   Author : Cecilia Olsson; Institutionen för naturgeografi och ekosystemvetenskap; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Plant phenology in the boreal and temperate climate zones is synchronised with seasonal changes in temperature and photoperiod. For deciduous trees, timing of budburst and leaf colouring define the growing season length and express adaptations to trade-offs in growth and risks. READ MORE