This dissertation centers on development of two web-based, in class learning tools, the AIChE Concept Warehouse (CW) and the Web-based Interactive Science and Engineering Learning Tool (WISE), and describes the investigation of student learning through their use. The intent of these tools is to promote deeper conceptual understanding in students...
Forest Service projections of the long-term supply and demand
for forest products indicate that increasing importance will be
placed on the supply behavior of nonindustrial private forest owners
in the South. The inventory model on which these projections are
based may produce biased estimates of southern timber production,
however, as...
We use qualitative and quantitative methods to explore social and spatial relationships between land ownership and forest cover in the Oregon Coast Range. Using a Geographic Information System (GIS) and regression analysis, we tested for spatial relationships between the structure of land ownership and forest cover across 66 watersheds in...
Using new and existing ice core CO₂ data from 65 ∼ 30 ka a new chronology for CO₂ is established and synchronized with Greenland ice core records to study how high latitude climate change and the carbon cycle were linked during the last glacial period. Atmospheric CO₂ rose several thousand...
Atmospheric CO₂ records for the centennial scale cooling event 8200 years ago (8.2 ka event) may
help us understand climate-carbon cycle feedbacks under interglacial conditions, which are important for
understanding future climate, but existing records do not provide enough detail. Here we present a new CO₂
record from the Siple...
Full Text:
future associated with a weakened AMOC [IPCC, 2007].
References
Ahn, J., and E. J. Brook (2007
Atmospheric CO₂ records for the centennial scale cooling event 8200 years ago (8.2 ka event) may
help us understand climate-carbon cycle feedbacks under interglacial conditions, which are important for
understanding future climate, but existing records do not provide enough detail. Here we present a new CO₂
record from the Siple...
Full Text:
.
Brook, E. J., S. Harder, J. Severinghaus, E. J. Steig, and C. M. Sucher (2000), On the
origin and
Atmospheric CO₂ records for the centennial scale cooling event 8200 years ago (8.2 ka event) may
help us understand climate-carbon cycle feedbacks under interglacial conditions, which are important for
understanding future climate, but existing records do not provide enough detail. Here we present a new CO₂
record from the Siple...
Full Text:
of atmospheric CO2 to the abrupt cooling event 8200 years ago
Jinho Ahn1,*, Edward J. Brook2, and
Atmospheric CO₂ records for the centennial scale cooling event 8200 years ago (8.2 ka event) may
help us understand climate-carbon cycle feedbacks under interglacial conditions, which are important for
understanding future climate, but existing records do not provide enough detail. Here we present a new CO₂
record from the Siple...
Air trapped in glacial ice offers a means of
reconstructing variations in the concentrations of atmospheric
gases over time scales ranging from anthropogenic
(last 200 yr) to glacial/interglacial (hundreds of thousands of
years). In this paper, we review the glaciological processes by
which air is trapped in the ice and...
A coupled climate-carbon cycle model and ice core CO2 data from the last glacial
period are used to explore the impact of changes in ocean circulation on atmospheric
CO2 concentrations on millennial time scales. In the model, stronger wind
driven circulation increases atmospheric CO2. Changes in the buoyancy driven
deep...
