(d) Further consideration is required as regards the suitability of the use of modelling, as opposed to direct monitoring, in meeting the stringency requirements of such monitoring plans, in particular taking into account the 2006 IPCC Guidelines for National Greenhouse Gas Inventories;
(d) Further consideration is required as regards the suitability of the use of modelling, as opposed to direct monitoring, in meeting the stringency requirements of such monitoring plans, in particular taking into account the 2006 IPCC Guidelines for National Greenhouse Gas Inventories;