Smith, NG; Rodgers, VL; Brzostek, ER; Kulmatiski, A; Avollo, ML; Hoover, DL; Grant, K; Jentsch, A; Fatichi, S; Niyogi, D: Toward a better integration of biological data from precipitation manipulation experiments into Earth system models, Reviews of Geophysics (2014), doi:10.1002/2014RG000458
Abstract:
The biological responses to precipitation within the terrestrial components of Earth system models, or land surface models (LSMs), are mechanistically simple and poorly constrained, leaving projections of terrestrial ecosystem functioning and feedbacks to climate change uncertain. A number of field experiments have been conducted or are underway to test how changing precipitation will affect terrestrial ecosystems. Results from these experiments have the potential to vastly improve modeled processes. However, the transformation of experimental results into model improvements still represents a grand challenge. Here we review the current state of precipitation manipulation experiments and the precipitation responses of biological processes in LSMs to explore how these experiments can help improve model realism. First, we discuss contemporary precipitation projections and then review the structure and function of current-generation LSMs. We then examine different experimental designs and discuss basic variables that, if measured, would increase a field experiment’s usefulness in a modeling context. Next, we compare biological processes commonly measured in the field with their model analogs and find that, in many cases, the way these processes are measured in the field is not compatible with the way they are represented in LSMs, an effect that hinders model development. We then discuss the challenge of scaling from the plot to the globe. Finally, we provide a series of recommendations aimed to improve the connectivity between experiments and LSMs and conclude that studies designed from the perspective of researchers in both communities will provide the greatest benefit to the broader global change community.
Upcoming ...


BayCEER Colloquium:
Th. 2018-04-12
- folgt -
Th. 2018-04-19
A new experiment to unravel the Impact of Biodiversity and Climate Variability on the functioning of grasslands
Th. 2018-04-26
Anticipating biome shifts
Ökologisch-Botanischer Garten:
Su. 2018-03-04
Die Lösung? Pflanzliche Alternativen für Plastik
Workshop:
We. 2018-02-28
Workshop Einstieg in die Umweltmesstechnik mit Arduino und Raspberry Pi
Weather research site
Luftdruck (356m): 978.8 hPa
Lufttemperatur: -4.7 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 5.2 km/h
Wind (Max.): 11.5 km/h
Windrichtung: NO

...more
Globalstrahlung: -1 W/m²
Lufttemperatur: -7.7 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 32m): 12.0 km/h
Wind (Max.): 28.6 km/h

...more