Abstract: Current vegetation models hold constant the dynamics of seasonal biospheric changes, neglecting annual variability. One of these features, the spring ?green wave? (onset of leafing or ?grean-up?) in midiatitudes, is an ...

Abstract: During the lumbering era of the late 1800s, a number of forest firm blazed across the upper Midwest. The climatological conditions in the months before these disasters have already been presented in other studies. This ...

Abstract: The atmosphere and biosphere both change rapidly throughout midlatitude spring. Many weather variables are modified during this season, including the diurnal temperature range (DTR). The mean DTR trend displays a discontinuity ...

Abstract: In spring many plants break dormancy and begin foliage production. The appearance of leaves (the ?green-up? period) triggers a rapid increase in transpiration at the surface as well as changes in albedo. Subsequently, these ...

Abstract: ingular value decomposition is used to identify the common variability in first leaf dates (FLDs) and 1 April snow water equivalent (SWE) for the western United States during the period 1900?2012. Results indicate two modes ...

Abstract: patial and temporal patterns of variability in spring onset are identified across western North America using a spring index (SI) model based on weather station minimum and maximum temperatures (Tmin and Tmax, respectively). ...

Abstract: limate change is expected to modify the timing of seasonal transitions this century, impacting wildlife migrations, ecosystem function, and agricultural activity. Tracking seasonal transitions in a consistent manner across ...

Abstract: A regional-scale observational experiment designed to address how the atmospheric boundary layer responds to spatial heterogeneity in surface energy fluxes.The Chequamegon Heterogeneous Ecosystem Energy-balance Study Enabled ...