Investigation of North American vegetation variability under recent climate: A study using the SSiB4/TRIFFID biophysical/dynamic vegetation model
نویسندگان
چکیده
منابع مشابه
Feedbacks of Vegetation on Summertime Climate Variability over the North American Grasslands. Part I: Statistical Analysis
Feedbacks of vegetation on summertime climate variability over the North American Grasslands are analyzed using the statistical technique of Granger causality. Results indicate that normalized difference vegetation index (NDVI) anomalies early in the growing season have a statistically measurable effect on precipitation and surface temperature later in summer. In particular, higher means and/or...
متن کاملFeedbacks of Vegetation on Summertime Climate Variability over the North American Grasslands: 1. Statistical Analysis
Weile Wang Department of Geography and Environment, Boston University, Boston, MA E-mail: [email protected] Bruce T. Anderson Department of Geography and Environment, Boston University, Boston, MA E-mail: [email protected] Nathan Phillips Department of Geography and Environment, Boston University, Boston, MA E-mail: [email protected] Robert K. Kaufmann Department of Geography and Environment, Boston Univer...
متن کاملFeedbacks of Vegetation on Summertime Climate Variability over the North American Grasslands. Part II: A Coupled Stochastic Model
A coupled linear model is derived to describe interactions between anomalous precipitation and vegetation over the North American Grasslands. The model is based on biohydrological characteristics in the semiarid environment and has components to describe the water-related vegetation variability, the long-term balance of soil moisture, and the local soil–moisture– precipitation feedbacks. Analys...
متن کاملOn the cause of abrupt vegetation collapse in North Africa during the Holocene: Climate variability vs. vegetation feedback
[1] The abrupt desertification over the northern Africa in the mid-Holocene is studied in both a complex and a simple coupled climate-vegetation model. In contrast to the previous mechanism that relies on strong positive vegetation-climate feedback and the resulted multiple equilibria, we propose a new mechanism in which the abrupt desertification is caused by low frequency climate variability,...
متن کاملOscillations in a simple climate–vegetation model
We formulate and analyze a simple dynamical systems model for climate–vegetation interaction. The planet we consider consists of a large ocean and a land surface on which vegetation can grow. The temperature affects vegetation growth on land and the amount of sea ice on the ocean. Conversely, vegetation and sea ice change the albedo of the planet, which in turn changes its energy balance and he...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2015
ISSN: 2169-897X
DOI: 10.1002/2014jd021963