A third threat to
agriculture is sea level rise.
Not exact matches
Once people understand that
sea -
levels will continue to
rise, will eventually make most major cities uninhabitable, and the glaciers which feed much or Asia's
agriculture will disappear, marine life will face an acid catastrophe, and nobody can see how a net food deficit can
be avoided, we all know that the political option of «just adapt to it when it happens» will melt away as fast as the glaciers.
Of course, nobody really knows... Wikipedia says 12,000 years ago but it could have
been earlier (
rising sea levels may have drowned the earliest evidence of
agriculture or..
Once people understand that
sea -
levels will continue to
rise, will eventually make most major cities uninhabitable, and the glaciers which feed much or Asia's
agriculture will disappear, marine life will face an acid catastrophe, and nobody can see how a net food deficit can
be avoided, we all know that the political option of «just adapt to it when it happens» will melt away as fast as the glaciers.
Paul D... As a part - time alarmist I would answer that with a little bit of extrapolation added to some warnings of climate scientists I guess the worst case scenario at least includes the total collapse of the WAIS, creating tsunamis at least all over the Pacific rim, the subsequent
sea level rise of c. 7m will destroy most of the remaining harbours, communication centers near coasts, next up would
be the melting of the collapsed ice in the southern ocean altering the climate of the entire southern hemisphere, making it near - impossible to guess what areas
are good for similar
agriculture as before, leading to massive movements of people.
Some people might
be willing to pay any price at all, in order to prevent
sea level rise, ocean acidification, ice caps melting,
agriculture and wildlife and ecosystems
being disrupted, people forced to migrate due to climate, etc, etc..
Plus, there
's the direct effect of climate change (and associated
sea level rise) on
agriculture and infrastructure and living.
Three major coastal natural resources —
agriculture, mangroves and aquaculture farms — and the dependent communities
are at a high risk of inundation due to
rising sea level, the study confirmed.
These
are outcomes that would irreversibly change regional climate patterns, disrupt
agriculture, precipitate greater flooding in some places, more sustained droughts in others, and accelerate
sea level rise.
Think about feeding a population of 9 billion as formerly productive regions become too hot and dry for large scale
agriculture, populations have to relocate,
sea level causes very large coastal populations to move inland quicker than new high
rise housing can
be built (but the land
is needed for crops) and so on.
«We
're very much about trying to build a strong and powerful and good economy,» Podesta said Friday, «but that will come through investments in cleaner energy systems, not in reliance on the systems that we've had in place, which
are now increasingly burdening our economy through these losses in
agriculture, in forestry, in extreme weather losses, in storm surges, in
sea -
level rise.»
My interpretation of these two papers
is that
sea level rise is a relatively small cost over 100 years and dwarfed by the benefits of warming for
agriculture and human health and by the cost of energy at large temperature increases.
The estimated global cost, after adaptation,
is $ 200B for 0.5
m rise and $ 1T for 1
m rise in 2100: The economic impact of substantial
sea -
level rise These costs
are dwarfed by the benefits for
agriculture and health (see Figure 3 in the first link).
Outside of
agriculture,
sea -
level rise, and a few other areas, the research on impacts
is vanishingly small relative to its importance.
There
are labels Storms,
Agriculture, Water,
Sea level rise, Health, Energy, Ecosystems.
The social foundations of children's mental and physical health and well -
being are threatened by climate change because of: effects of
sea level rise and decreased biologic diversity on the economic viability of
agriculture, tourism, and indigenous communities; water scarcity and famine; mass migrations; decreased global stability46; and potentially increased violent conflict.47 These effects will likely
be greatest for communities already experiencing socioeconomic disadvantage.48
Instead of people not
being able to find places to live because of ice 1 mile thick over Wisconsin, they won't
be able to find places to live because of
sea level rise, and much of the world becoming too hot or dry for humans or for our
agriculture.
At 600ppm, global average temperature
rise could
be in the range of 3 - 4Â °C — which means greater
sea level rise than predicted, glaciers melting and constraining water supply throughout large areas of Asia,
agriculture being severely stressed in many places, greater storm intensity, reduced biodiversity, the end of coral reefs.
Outside of storm related damage I'd guess it
's affects on regional
agriculture and
sea -
level rise and other gently accumulating issues (temperature?)
Fishing, a major source of food for the region, will also
be affected by
rising sea levels, making coastal land unusable, causing fish species to migrate, and an increase in the frequency of extreme weather events disrupting
agriculture.