Article 5
1. Each Party included in Annex I shall have in place, no later
than one year prior to the start of the first commitment period, a
national system for the estimation of anthropogenic emissions by
sources and removals by sinks of all greenhouse gases not controlled
by the Montreal Protocol. Guidelines for such national systems, which
shall incorporate the methodologies specified in paragraph 2 below,
shall be decided upon by the Conference of the Parties serving as the
meeting of the Parties to this Protocol at its first
session.
2. Methodologies for estimating anthropogenic emissions by sources
and removals by sinks of all greenhouse gases not controlled by the
Montreal Protocol shall be those accepted by the Intergovernmental
Panel on Climate Change and agreed upon by the Conference of the
Parties at its third session. Where such methodologies are not used,
appropriate adjustments shall be applied according to methodologies
agreed upon by the Conference of the Parties serving as the meeting
of the Parties to this Protocol at its first session. Based on the
work of, inter alia, the Intergovernmental Panel on Climate
Change and advice provided by the Subsidiary Body for Scientific and
Technological Advice, the Conference of the Parties serving as the
meeting of the Parties to this Protocol shall regularly review and,
as appropriate, revise such methodologies and adjustments, taking
fully into account any relevant decisions by the Conference of the
Parties. Any revision to methodologies or adjustments shall be used
only for the purposes of ascertaining compliance with commitments
under Article 3 in respect of any commitment period adopted
subsequent to that revision.
3. The global warming potentials used to calculate the carbon
dioxide equivalence of anthropogenic emissions by sources and
removals by sinks of greenhouse gases not controlled by the Montreal
Protocol listed in Annex A shall be those accepted by the
Intergovernmental Panel on Climate Change and agreed upon by the
Conference of the Parties at its third session. Based on the work of,
inter alia, the Intergovernmental Panel on Climate Change
and advice provided by the Subsidiary Body for Scientific and
Technological Advice, the Conference of the Parties serving as the
meeting of the Parties to this Protocol shall regularly review and,
as appropriate, revise the global warming potential of each such
greenhouse gas, taking fully into account any relevant decisions by
the Conference of the Parties. Any revision to a global warming
potential shall apply only to those commitments under Article 3 in
respect of any commitment period adopted subsequent to that
revision.