Tree Temperatures and Thermostasy
نویسندگان
چکیده
منابع مشابه
Borehole temperatures and tree rings: Seasonality and estimates of extratropical Northern Hemispheric warming
[1] We construct an extratropical reduced temperature–depth profile for land areas north of 20 N latitude from the global borehole temperature database compiled for climate reconstruction. The mean reduced temperature profile compares well with a time series constructed from an initial baseline temperature (0.6 ± 0.1 C) and the last 140 years of gridded annual surface air temperature data diffu...
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Predictions of how tropical forests will respond to future climate change are constrained by the paucity of data on the performance of tropical species under elevated growth temperatures. In particular, little is known about the potential of tropical species to acclimate physiologically to future increases in temperature. Seedlings of 10 neo-tropical tree species from different functional group...
متن کاملEstimation of Tree Biomass at Individual tree, Sample plot and Hybrid Level using Drone Images
Two-dimensional image conversion algorithms to 3D data create the hope that the structural properties of trees can be extracted through these images. In this study, the accuracy of biomass estimation in tree, plot, and hybrid levels using UAVs images was investigated. In 34.8 ha of Sisangan Forest Park, using a quadcopter, 854 images from an altitude of 100 meters above ground were acquired. SF...
متن کاملUnderestimation of volcanic cooling in tree-ring-based reconstructions of hemispheric temperatures
The largest eruption of a tropical volcano during the past millennium occurred in AD 1258–1259. Its estimated radiative forcing was several times larger than the 1991 Pinatubo eruption1. Radiative forcing of that magnitude is expected to result in a climate cooling of about 2 C (refs 2–5). This effect, however, is largely absent from tree-ring reconstructions of temperature6–8, and is muted in ...
متن کاملDirect recordings of the temperatures in the tracheobronchial tree in normal man.
In an effect to determine how far inspired air could penetrate into the respiratory tract before being brought to body conditions, we measured the temperature in the airways of the anterior basilar segment of the right lower lobe in five normal subjects while they breathed air at subfreezing and ambient conditions. During quiet breathing, most of the heating of the incoming gas took place in th...
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ژورنال
عنوان ژورنال: Annals of the Missouri Botanical Garden
سال: 1939
ISSN: 0026-6493
DOI: 10.2307/2394312