Climate, Air Pollutants, and Wet Deposition

Selected breakpoints of net forest carbon uptake at four eddy-covariance sites

“…1b. Significant trends in the mean annual temperatures of 0.3-0.4 K per decade exists for US-Ha1 and DE-Bay (Urbanski et al, 2007;L€ uers et al, 2017). The European stations show similar inter-annual changes and the American station is often phase shifted due to the mean phase shift of the Rossby waves.…”

Analysis of drought conditions and their impacts in a headwater stream in the Central European lower mountain ranges

“…1), located in the Fichtel Mountains (SE Germany), has been studied extensively since 1986 (Heindl et al, 1995). The catchments' climate is classified as humid continental (Peters and Gerchau, 1995), with an average annual air temperature of 6.5 °C and an average total precipitation rate of 1038 mm (Lüers et al, 2017). Preliminary climate data published in Gerstberger et al (2004) showed an average annual temperature of 5.3 °C and annual precipitation of 1156 mm, indicating a shift towards dryer and warmer conditions.…”

“…During the 1990s, a large-scale research project investigated the catchment concerning acid rain and ecosystem functionality in detail. Lüers et al (2017) published their results in the context of past climate changes. They found shifting conditions from an entirely humid climate to the appearance of at least one dry season and hot instead of warm summers.…”

“…Our study will focus on investigating and predicting the likelihood of hydrological drought conditions, because of humanly induced climate change, for a small headwater (Lehstenbach catchment) located in South-East Germany. The Lehstenbach catchment was the object of various environmental studies over the last 30 years (Lüers et al, 2017). This catchment represents many catchments in Central Europe with a larger fraction of riparian wetlands, no water-course constructions, and regular logging.…”