Browsing by Author "Porporato, A"
Now showing items 1-13 of 13
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Analysis of soil carbon transit times and age distributions using network theories
Manzoni, S; Katul, GG; Porporato, A (Journal of Geophysical Research: Biogeosciences, 2009-01-01)The long-term soil carbon dynamics may be approximated by networks of linear compartments, permitting theoretical analysis of transit time (i.e., the total time spent by a molecule in the system) and age (the time elapsed ... -
Boom and bust carbon-nitrogen dynamics during reforestation
Parolari, AJ; Mobley, ML; Bacon, AR; Katul, GG; Richter, DDB; Porporato, A (Ecological Modelling, 2017-09-24)© 2017 Elsevier B.V. Legacies of historical land use strongly shape contemporary ecosystem dynamics. In old-field secondary forests, tree growth embodies a legacy of soil changes affected by previous cultivation. Three patterns ... -
Causality across rainfall time scales revealed by continuous wavelet transforms
Molini, A; Katul, GG; Porporato, A (JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2010-07-31) -
Comparative study of ecohydrological streamflow probability distributions
Ceola, S; Botter, G; Bertuzzo, E; Porporato, A; Rodriguez-Iturbe, I; Rinaldo, A (Water Resources Research, 2010-09-17)We run a comparative study of ecohydrological models of streamflow probability distributions (pdfs), p(Q), derived by Botter et al. (2007a, 2009), against field data gathered in different hydrological contexts. Streamflows ... -
Local kinetic interpretation of entropy production through reversed diffusion.
Porporato, A; Kramer, PR; Cassiani, M; Daly, E; Mattingly, J (Phys Rev E Stat Nonlin Soft Matter Phys, 2011-10)The time reversal of stochastic diffusion processes is revisited with emphasis on the physical meaning of the time-reversed drift and the noise prescription in the case of multiplicative noise. The local kinematics and mechanics ... -
Natural streamflow regime alterations: Damming of the Piave river basin (Italy)
Botter, G; Basso, S; Porporato, A; Rodriguez-Iturbe, I; Rinaldo, A (Water Resources Research, 2010-06-01)A novel approach is proposed to estimate the natural streamflow regime of a river and to assess the extent of the alterations induced by dam operation related to anthropogenic (e.g., agricultural, hydropower) water uses ... -
Role of microtopography in rainfall-runoff partitioning: An analysis using idealized geometry
Thompson, SE; Katul, GG; Porporato, A (Water Resources Research, 2010) -
Scale-wise evolution of rainfall probability density functions fingerprints the rainfall generation mechanism
Molini, A; Katul, GG; Porporato, A (Geophysical Research Letters, 2010-01-01)© 2010 by the American Geophysical Union.The cross-scale probabilistic structure of rainfall intensity records collected over time scales ranging from hours to decades at sites dominated by both convective and frontal systems ... -
The effect of accelerated soil erosion on hillslope morphology
Bonetti, S; Richter, DD; Porporato, A (Earth Surface Processes and Landforms, 2019-12-01)© 2019 John Wiley & Sons, Ltd. Intensive agricultural land use can have detrimental effects on landscape properties, greatly accelerating soil erosion, with consequent fertility loss and reduced agricultural potential. ... -
The Formation of Clay-Enriched Horizons by Lessivage
Calabrese, S; Richter, DD; Porporato, A (Geophysical Research Letters, 2018-08-16)©2018. American Geophysical Union. All Rights Reserved. Soils with argillic horizons comprise more than 25% of the Earth's surface. Although their origin is still debated, lessivage is often invoked to explain them, but ... -
The rainfall-no rainfall transition in a coupled land-convective atmosphere system
Konings, AG; Katul, GG; Porporato, A (Geophysical Research Letters, 2010-07-01)A one-dimensional representation of the atmospheric boundary layer (ABL) depth is coupled to a soil moisture bucket model to dynamically explore the relative roles of surface and free atmospheric conditions on convective ... -
The role of tectonic uplift, climate, and vegetation in the long-term terrestrial phosphorous cycle
Buendía, C; Kleidon, A; Porporato, A (Biogeosciences, 2010-07-02)Phosphorus (P) is a crucial element for life and therefore for maintaining ecosystem productivity. Its local availability to the terrestrial biosphere results from the interaction between climate, tectonic uplift, atmospheric ... -
Traditional and microirrigation with stochastic soil moisture
Vico, G; Porporato, A (WATER RESOURCES RESEARCH, 2010-03-09)