DOI: 10.5194/cp-10-811-2014
Scopus记录号: 2-s2.0-84899054602
论文题名: Comparing modelled fire dynamics with charcoal records for the Holocene
作者: Brücher T. ; Brovkin V. ; Kloster S. ; Marlon J.R. ; Power M.J.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2014
卷: 10, 期: 2 起始页码: 811
结束页码: 824
语种: 英语
Scopus关键词: anthropogenic effect
; charcoal
; climate modeling
; comparative study
; fire history
; Holocene
; land surface
; paleoclimate
; temporal period
英文摘要: An earth system model of intermediate complexity (CLIMate and BiosphERe - CLIMBER-2) and a land surface model (JSBACH), which dynamically represent vegetation, are used to simulate natural fire dynamics through the last 8000 yr. Output variables of the fire model (burned area and fire carbon emissions) are used to compare model results with sediment-based charcoal reconstructions. Several approaches for processing model output are also tested. Charcoal data are reported in Z-scores with a base period of 8000-200 BP in order to exclude the strong anthropogenic forcing of fire during the last two centuries. The model-data comparison reveals a robust correspondence in fire activity for most regions considered, while for a few regions, such as Europe, simulated and observed fire histories show different trends. The difference between modelled and observed fire activity may be due to the absence of anthropogenic forcing (e.g. human ignitions and suppression) in the model simulations, and also due to limitations inherent to modelling fire dynamics. The use of spatial averaging (or Z-score processing) of model output did not change the directions of the trends. However, Z-score-transformed model output resulted in higher rank correlations with the charcoal Z-scores in most regions. Therefore, while both metrics are useful, processing model output as Z-scores is preferable to areal averaging when comparing model results to transformed charcoal records. © Author(s) 2014. CC Attribution 3.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49277
Appears in Collections: 气候变化与战略
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Recommended Citation:
Brücher T.,Brovkin V.,Kloster S.,et al. Comparing modelled fire dynamics with charcoal records for the Holocene[J]. Climate of the Past,2014-01-01,10(2)