I would guess that the answer to your question «are ancillary benefits of global warming important enough to include in the cost / benefit calculations» is «yes» - e.g. reduced travel times through ice - free Arctic is probably non-trivial to world trade, changing
patterns of agricultural production are net wins for some populations.
In considering these issues, I encourage you to explore a new book, available in its entirety online: «The Shifting
Patterns of Agricultural Production and Productivity Worldwide,» edited by Julian M. Alston, Bruce A. Babcock, and Philip G. Pardey.
Not exact matches
Extremes in local and regional weather
patterns and climate variability have disrupted
agricultural production in the past; climate - related temperature rise is expected to increasingly affect crop yields in many regions
of the world.
Therefore, in this chapter we discuss observed and expected
patterns of change for each
of the major types
of agricultural production rather than applying the climate trends equivalently across
agricultural topics.
In addressing the challenge
of food security and climate change, the world faces therefore three inter-related challenges: first, the need to double food
production by 2050 to meet growing world demand; second, the need to adapt
agricultural production to shifting weather
patterns; and third, the need to minimize agriculture's contribution to greenhouse gas emissions while maximizing its potential to mitigate climate change.
Where is Donahue in talking about the implications
of Global Warming and the costs
of species going extinct,
agricultural production distrupted through weather
pattern changes, and dealing with the impacts
of rising ocean levels and more severe weather?
The impacts
of greenhouse gas (GHG) emissions on human health include the effects
of air pollution on increased respiratory disease, the spread
of vector - borne illnesses like cholera, malaria, and dengue fever due to changing weather
patterns, and compromised
agricultural production and food security leading to greater malnutrition.