(1)In this Act, a “greenhouse gas” means—
(a)carbon dioxide;
(b)methane;
(c)nitrous oxide;
(d)hydrofluorocarbons;
(e)perfluorocarbons;
(f)sulphur hexafluoride.
(2)The Scottish Ministers may, if they consider it appropriate to do so, by order, modify subsection (1) so as to—
(a)add a gas;
(b)modify the description of a gas.
(3)The power in subsection (2)(a) may be exercised only if it appears to the Scottish Ministers that an agreement or arrangement at European or international level recognises that the gas to be added contributes to climate change.
(4)The Scottish Ministers must, before laying a draft of a statutory instrument containing an order under subsection (2) before the Scottish Parliament, request advice from the relevant body.
(5)If the order makes provision different from that recommended by the relevant body, the Scottish Ministers must publish a statement setting out the reasons why.
(6)A statement under subsection (5) may be published in such manner as the Scottish Ministers consider appropriate.