نتایج جستجو برای: biogeochemical evaluation

تعداد نتایج: 831643  

2008
Samar Khatiwala

A novel computational approach is introduced for the efficient computation of equilibrium solutions of seasonally forced ocean biogeochemical models. The essential idea is to formulate the problem as a large system of nonlinear algebraic equations to be solved with a class of methods known as matrix-free Newton–Krylov (MFNK). MFNK is a combination of Newton-type methods for superlinearly conver...

2013
Jiayun Zhou Bruno Delille Hajo Eicken Martin Vancoppenolle Frederic Brabant Gauthier Carnat Nicolas-Xavier Geilfus Tim Papakyriakou Bernard Heinesch Jean-Louis Tison

[1] The impacts of the seasonal evolution of sea-ice physical properties on ice-ocean biogeochemical exchanges were investigated in landfast ice at Barrow (Alaska) from January through June 2009. Three stages of brine dynamics across the annual cycle have been identified based on brine salinity, brine volume fraction, and porous medium Rayleigh number (Ra). These are sea-ice bottom-layer convec...

Journal: :Journal of soil science and plant nutrition 2015

Journal: :Frontiers in Environmental Science 2019

Journal: :Eos, Transactions American Geophysical Union 2005

2011
Kristina J. Anderson-Teixeira Peter K. Snyder Tracy E. Twine Santiago V. Cuadra Marcos H. Costa Evan H. DeLucia

Terrestrial ecosystems regulate climate through both biogeochemical (greenhouse-gas regulation) and biophysical (regulation of water and energy) mechanisms1,2. However, policies aimed at climate protection through land management, including REDD+ (where REDD is Reducing Emissions from Deforestation and Forest Degradation)3 and bioenergy sustainability standards4, account only for biogeochemical...

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