Biophysical and economic limits to negative CO2 emissions

The views expressed herein are those of the authors, and do not represent those of a particular governmental agency or interagency body. This analysis was initiated at a Global Carbon Project meeting on NETs in Laxenburg, Austria, in April 2013 and contributes to the MaGNET program (http://www.cger.nies.go.jp/gcp/magnet.html). G.P.P. was supported by the Norwegian Research Council (236296). C.D.J. was supported by the Joint UK DECC/Defra Met Office Hadley Centre Climate Programme (GA01101). J.G.C. acknowledges support from the Australian Climate Change Science Program. E.Ka. and Y.Y. were supported by the ERTDF (S-10) from the Ministry of the Environment, Japan.

Quantifying wind and pressure effects on trace gas fluxes across the soil–atmosphere interface

Acknowledgements. We would like to acknowledge the manufacturers of the inner toroid: Mark Bentley and Steve Howarth from the University of York, Dept. of Biology, mechanical and electronics workshops respectively. Furthermore, we would like to acknowledge the Forestry Commission for access and aid at Wheldrake Forest, Mike Bailey and Natural Resources Wales for access and assistance at Cors Fochno, and Norrie Russell and the Royal Society for the Protection of Birds for access and aid at Forsinard. We would also like to thank Graham Hambley, James Robinson, and Elizabeth Donkin for equipment preparation and sampling. Phil Ineson is thanked for the loan of essential equipment, site suggestions, and accessible power supply. Funding was provided by the University of York, Dept. of Biology, and by a grant to YAT by the UK Natural Environment Research Council (NE/H01182X/1).