Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Timelines for mitigating methane emissions from energy technologies   Energy technologies emitting differing proportions of methane and carbon
dioxide vary in their relative climate impacts over time, due to the different
atmospheric lifetimes of the two gases. Standard technology comparisons using
the global warming potential (GWP) emissions equivalency metric do not reveal
these dynamic impacts, and may not provide the information needed to assess
technologies and emissions mitigation opportunities in the context of broader
climate policy goals. Here we formulate a portfolio optimization model that
incorporates changes in technology impacts as a radiative forcing (RF)
stabilization target is approached. An optimal portfolio, maximizing allowed
energy consumption while meeting the RF target, is obtained by year-wise
minimization of the marginal RF impact in an intended stabilization year. The
optimal portfolio calls for using certain higher methane-emitting technologies
prior to an optimal switching year, followed by methane-light technologies as
the stabilization year approaches. The model is applied to transportation
technology pairs and shows that, by accounting for the differing decay behavior
of gases, optimal switching portfolios allow energy consumption gains of up to
50% compared to relying on the higher methane-emitting technology alone. The
results allow for estimates of target timelines for mitigating methane
emissions from energy technologies.

28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci