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- W4322006656 abstract "The climate is changing most rapidly in the Arctic because of Arctic amplification, influencing migratory bird species that depend on the short, but productive Arctic summer climate. A potential increase in climate variability can lead to reduced reproductive success and even be a major source of mortality for these birds. Most studies so far, focus on mean changes in climate, telling part of the story. However, along with changes in the mean, changes in the variability of climate will occur. These two combined (changes in mean and variability) can lead to more/less frequent extreme events such as heatwaves, droughts and excessive snowfall or melt.Here we focus on changes in variability and extremes of Arctic bird-related climatic variables, such as temperature, precipitation, snow cover, primary productivity, solar radiation, and soil moisture. We investigate how strongly these climatic variables vary on a daily, monthly, annual and decadal basis. Furthermore, we infer changes in variability between four distinct climate states (0.5x, 1x, 2x & 4x CO2 level): will the variability and probability for extreme events change in warmer or colder climates? How will this potentially affect Arctic migratory birds? For example, snowfall and ground snow cover are expected to decrease in a warmer climate, resulting in more areas available for nesting. However, snowfall variability is projected to increase, making conditions more unpredictable on an annual basis.To this end, we carried out four long (500 years), steady-state runs (constant CO2 level), using the state-of-the-art Earth System Model EC-Earth3. We used two versions of the model (EC-Earth3-Veg & EC-Earth3-CC) and 4 CO2 levels: 0.5x, 1x, 2x & 4x CO2 concentration of the year 2022. The end result is 4,000 years of model output data, allowing us to study climate-related changes in climate variability of Arctic bird-related variables." @default.
- W4322006656 created "2023-02-26" @default.
- W4322006656 creator A5029429221 @default.
- W4322006656 creator A5059164294 @default.
- W4322006656 date "2023-05-15" @default.
- W4322006656 modified "2023-09-27" @default.
- W4322006656 title "Changes in Arctic climate variability and extremes: effects on migratory birds" @default.
- W4322006656 doi "https://doi.org/10.5194/egusphere-egu23-6838" @default.
- W4322006656 hasPublicationYear "2023" @default.
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