Rising Sea Levels Ranked as Greatest Climate Change Threat: Guy Carpenter

September 4, 2013

Guy Carpenter & Company has an analysis of the evolving risk landscape spurred by global warming, which stresses that “climate change, global warming and the resulting landscape shift for risk management is a growing area of concern among governments, the general public, the private sector and the (re)insurance industry at large.”

According to the report, “global warming is an established scientific fact that cannot be explained by natural variability alone.”

Johnny Chan, PhD, Director of the Guy Carpenter Asia-Pacific Climate Impact Centre, said: “The debate on climate change and global warming has been intensely polarized. A great deal of this ‘noise’ has clouded the very real and emerging issues that we as an industry and society need to address. In order to adapt to climate change and the changing risk landscape, it is necessary to cut through this noise and focus on objective decisions to mitigate both the financial and social risks associated with climate change.”

According to the Intergovernmental Panel on Climate Change (IPCC) “the evidence of global warming is undeniable and includes: increasing air temperatures, increasing ocean water temperatures, tree ring characteristics, ice core characteristics and the retreat of ice caps. Although climate variability has been cited over past centuries, with supporting evidence dating back over the millennia, the rate of warming is believed to be unprecedented.”

James Waller, PhD, Research Meteorologist for GC Analytics®, added: “Based on consistent and mounting scientific evidence, the IPCC has assessed that it is highly unlikely that recent warming trends can be explained away by natural variability alone. Estimates show that the mean temperature of the Earth could rise an additional two to four degrees Celsius [3.6°F to 7.2°F) by the end of the century. This may seem like a relatively small increase, but the impact of rising temperatures, even by a few degrees, could cause a shift in weather patterns, with considerable impacts worldwide.”

As the planet warms up it leads to a rise in sea levels, which Guy Carpenter describes as the “single greatest threat posed by global warming.” The rise is “expected to increase coastal flood frequency and severity from tropical cyclones, extra tropical cyclones and tsunami events.

“According to the IPCC, a sea-level rise of at least one to two feet can be expected by the end of the century, though a wide range of sea-level rise scenarios exist. The growing urban footprint and increasing population density in coastal areas has also amplified the financial and societal impacts of such events.

“The recent consequences of Cyclone Nilam for Eastern India and the impacts of Superstorm Sandy for the coastal United States are poignant examples of the existing coastal flood threat. The impact of hurricanes, notwithstanding any trends, is projected to become more severe under sea-level rise.”

The inherent risks posed by changing weather patterns aren’t limited to rises in sea levels. They “will also impose inland flood and drought risk for many areas, with implications for agricultural, wildfire and water resources management,” the report said. “By the end of the century, global climate models indicate that the number of days between precipitation events will increase for areas including, but not limited to, Southern Australia, Southeast Asia and India, Southern Europe, Central America and western North America, while others are expected to see diminished annual precipitation and could face water shortages. Drought conditions in turn pose a hazard of wildfires. Case in point, over the last three decades the wildfire season in the western United States has increased by about 78 days.”

Facing these increasing threats will require “adaptation measures,” which should be put in place to “offset the impact and hazards posed by global warming.” Two of the most important measures include:
–Water conservation and flood control efforts, coupled with sustainable agriculture and land-use planning.
– Diligent adjustment and modification of codes and standards to improve resiliency to wind and flood events can also offset vulnerability, in both developed and developing countries around the world, to reduce the financial and social risks and impacts associated with these catastrophic events. This is especially important for developing countries where over 95 percent of weather-related fatalities occur.”

In conclusion Guy Carpenter said: “With the exception of coastal flood, inland flood and drought, the blanket assumption that increasing financial losses are directly and completely caused by an increase in natural hazard frequency misrepresents the issues.

“Rather, according to the report, it is crucial to account for factors including (per capita) gross domestic product, total insured value, population density and annualized property value. The impact of weather-related hazards are of course dependent on the frequency and severity of events, but also on vulnerability, population density, local infrastructure and the property values of affected areas.”

Source: Guy Carpenter

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Latest Comments

  • September 10, 2013 at 4:03 pm
    Jim Macdonald says:
    If you believe everything that the IPCC says, I've got a bridge to sell you. After 16 years and counting with no warming, nada, they use terms like "warming is undeniable" , "... read more
  • September 4, 2013 at 1:51 pm
    Captain Planet says:
    "As the planet warms up it leads to a rise in sea levels, which Guy Carpenter describes as the “single greatest threat posed by global warming.” The rise is “expected to... read more
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