Description: Das Projekt "PBM: The Potsdam Biosphere Model" wird vom Umweltbundesamt gefördert und von Potsdam-Institut für Klimafolgenforschung e.V. durchgeführt. T he aim of the PBM project is to develop the existing LPJmL Dynamic Global Vegetation Model towards a new-generation biosphere model that is suited as a fast and effective component of an Earth System Model. Therefore, the structure of LPJ is fundamentally revised and the model developed further both in terms of process representations and in terms of proven ability to reproduce observed biogeochemical and hydrological dynamics. Background: The role of the land biosphere in the Earth system - both as a substrate for human activity and as a significant mechanism producing potentially nonlinearities in the carbon cycle - has been demonstrated by numerous studies. Modelling these dynamic processes at a level of complexity comparable to present-day climate models has been achieved by Dynamic Global Vegetation Models (DGVMs) such as LPJmL, but their interface to climate models has not received sufficient technical nor scientific attention. As a consequence, climate models are using outdated representations of land surface processes (if any at all), and DGVMs cannot use climate model outputs directly. This dilemma originates not only in different scientific communities, but also in the different scales of the processes receiving most attention in these communities. Climate models typically are concerned with quick, large-scale flows of the atmosphere, while land surface processes are slow, fine-scale processes such as the growth of plants or the dynamics of soil carbon pools. This situation calls for a new-generation numerical simulation model - PBM - which is capable of representing the main physiological and biophysical processes in the land biosphere, as a function of the main driver complexes climate and land use. PBM is named a module, because its design is oriented towards the coupling with other components within a global integrated assessment model. It will simultaneously also be suited for use in classical offline mode.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Potsdam ? Pflanzensoziologie ? Substrat ? Vegetation ? Bodenkohlenstoff ? Aufschlussverfahren ? Main ? Strafrecht ? Flächennutzung ? Fruchtbarkeit ? Globalmodell ? Klimamodell ? Kohlenstoffkreislauf ? Mensch ? Studie ? Modellierung ? Klimafolgenforschung ? Atmosphäre ? Biosphäre ? Erdoberfläche ? Hydrologie ? Erdsystem ? Alte Wirkstoffe [EU-Biozidrichtlinie] ? Atmosphärendynamik ?
Region: Brandenburg
Bounding box: 13.01582° .. 13.01582° x 52.45905° .. 52.45905°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2007-01-01 - 2008-12-31
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