Subnivean Arctic and sub-Arctic net ecosystem exchange (NEE) : Towards representing snow season processes in models of NEE using cryospheric remote sensing

Auteur(s) et Affiliation(s)



Description :
The AA. review snow season processes and their effects on net ecosystem exchange (NEE); assess the suitability of cryospheric remote sensing approaches for models of NEE; and suggest strategies for representing snow season processes in models of NEE. Strategies include : using observations of fractional snow cover in spring and fall to restrict estimates of photosynthetic uptake; combining observations of snow accumulation and soil freeze/thaw with observations of air temperature to generate more realistic estimates of soil temperature and soil respiration; and using observations of depth to estimate the influence of snow accumulation and tree wells on soil respiration. Including remote sensing observations of snow properties in models of NEE could reduce uncertainty in snow season estimates of NEE, resulting in a better understanding of the northern carbon cycle and how it is responding to climate-driven changes in the interconnected biospheric, atmospheric and cryospheric systems.


Type de document :
Article de périodique

Source :
Progress in physical geography, issn : 0309-1333, 2013, vol. 37, n°. 4, p. 484-515, nombre de pages : 32, Références bibliographiques : 7 p.

Date :
2013

Editeur :
Pays édition : Royaume-Uni, London, Sage Publications