FY 05/06 | FY 04/05 | FY 03/04 | SPRING 2003 | FALL 2002 | SPRING 2002

FALL 2002


The working group on scaled eco-hydraulics is building a predictive framework for the vertical transport of water and carbon through the biosphere. This group is integrating physical and biological principles from a hierarchy of scales into a continuous computational system for exploring water and carbon cycling from the xylem scale to the regional scale. Their approach accounts for the fundamental complexities (between physics and biology and between disparate scales) within the ecosystem and lower atmosphere. The group's research is focused on the intersection between major national and international science initiatives, targeted to resolve the impact of biosphere-atmosphere interactions (and feedbacks) on the global carbon and water cycles. The NSF, DOE, NASA, and USDA are supporting broad efforts to build predictive understanding in the individual cycles of water and carbon. By working on the intersection of these cycles, the group is positioned to establish a leadership role in taking this topic from descriptive to the predictive. An important product of this research is the ability to estimate present and future carbon uptake by terrestrial ecosystems in the presence of dynamic water availability.

The group's expertise spans plant physiological ecology (Ram Oren) through canopy scale transport (Gabriel Katul) to atmospheric boundary layer transport (John Albertson), with a strong integrating role of mathematics and physics (Andrea Bertozzi).

During the Fall 2002 term, the group offered a course to graduate and undergraduate students that explored the role of terrestrial ecosystems in regulating atmospheric CO2 and water uptake. More information.


Poggi, D. and G.G. Katul, J.J. Finnigan, and S.E. Belcher, 2008, Analytical models for the mean flow inside dense canopies on gentle hilly terrain, Quarterly Journal of the Royal Meteorological Society, 134: 1095-1112

Kumagai, T., G. G.Katul, A. Porporato, T. M.Saitoh, M. Ohashi, T. Ichie, M. Suzuki, 2004, Carbon and water cycling in a Bornean tropical rainforest under current and future climate scenarios Advances in Water Resources, 27, 135-150.

Kumagai, T., G. G. Katul, T.M. Saitoh, Y. Sato, O.J. Manfroi, T. Morooka, T. Ichie, K. Kuraji, M. Suzuki, and A. Porporato, 2004, Water cycling in a Bornean tropical rain forest under current and projected precipitation scenarios, Water Resources Research, 40, W01104, doi:10.1029/2003WR002226.

Katul, G. G,  L. Mahrt, D. Poggi, and C. Sanz, 2004, One and two equation models for canopy turbulence, Boundary Layer Meteorology, 113(1), 81-109. doi:10.1023/B:BOUN.0000037333.48760.e5

Poggi, D., A. Porporato, L. Ridolfi, J.D. Albertson, and G.G. Katul, 2004, Quantifying the interaction between large and small scale eddies from nonlinear time series analysis, Geophys. Res. Lett., 31, L05102, doi:10.1029/2003GL018611.

Poggi, D., G.G. Katul, and J.D. Albertson, 2004, A note on the contribution of dispersive fluxes to momentum transfer within canopies, Boundary Layer Meterology, 111(3), 615-621.  doi: 10.1023/B:BOUN.0000016563.76874.47

Poggi, D., G.G. Katul, and J.D. Albertson, 2004, Momentum transfer and turbulent kinetic energy budgets within a dense model canopy, Boundary Layer Meteorology, 111(3), 589-614. doi: 10.1023/

Cava, D., U. Giostra, M. Siqueira, and G.G. Katul, 2004, Organised motion and radiative perturbations in the nocturnal canopy sublayer above an even-aged pine forest, Boundary Layer Meteorology, 112, 129-157.

Chuang, Y-L., R. Oren, A. L. Bertozzi, G. G. Katul, 2006, The porous media model for the hydraulic system of a conifer tree: Linking sap flux data to transpiration rate, Ecological Modeling, 191(3-4), 447-468.