10.6084/m9.figshare.1011688.v1
Sebastian Wolf
Sebastian
Wolf
Lutz Merbold
Lutz Merbold
Dennis Imer
Dennis Imer
Jacqueline Stieger
Jacqueline Stieger
Rebecca Hiller
Rebecca Hiller
Sebastian Zielis
Sebastian Zielis
Matthias Häni
Matthias Häni
Christof Ammann
Christof Ammann
Werner Eugster
Werner Eugster
Nina Buchmann
Nina
Buchmann
Precipitation sums and relative deviations from the long-term means (1981–2010) for the year 2011
IOP Publishing
2013
gpp
spring drought
ecosystem
lowland grassland sites
water vapour fluxes
et
spring phenological development
year 2011. Deviations
Swiss FluxNet data
wue
European summer heat wave
Environmental Science
2013-07-03 00:00:00
Dataset
https://iop.figshare.com/articles/dataset/___Precipitation_sums_and_relative_deviations_from_the_long_term_means_1981_2010_for_the_year_2011/1011688
<p><b>Table 2.</b>
Precipitation sums and relative deviations from the long-term means (1981–2010) for the year 2011. Deviations for 2010 are reported for comparison. Long-term data were derived from nearby reference stations by MeteoSwiss while data for 2010 and 2011 were measured directly at the sites.
</p> <p><strong>Abstract</strong></p> <p>Since the European summer heat wave of 2003, considerable attention has been paid to the impacts of exceptional weather events on terrestrial ecosystems. While our understanding of the effects of summer drought on ecosystem carbon and water vapour fluxes has recently advanced, the effects of spring drought remain unclear. In Switzerland, spring 2011 (March–May) was the warmest and among the driest since the beginning of meteorological measurements. This study synthesizes Swiss FluxNet data from three grassland and two forest ecosystems to investigate the effects of this spring drought. Across all sites, spring phenological development was 11 days earlier in 2011 compared to the mean of 2000–2011. Soil moisture related reductions of gross primary productivity (GPP) were found at the lowland grassland sites, where productivity did not recover following grass cuts. In contrast, spring GPP was enhanced at the montane grassland and both forests (mixed deciduous and evergreen). Evapotranspiration (ET) was reduced in forests, which also substantially increased their water-use efficiency (WUE) during spring drought, but not in grasslands. These contrasting responses to spring drought of grasslands compared to forests reflect different adaptive strategies between vegetation types, highly relevant to biosphere–atmosphere feedbacks in the climate system.</p>