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Draft Climate Assessment Report

January 13, 2013

The National Climate Assessment and Development Advisory Committee (NCADAC), a 60-person federal committee, has drafted a report on the status of our climate. The draft, which is now available online here will be open for public comments beginning tomorrow, and will undergo an extensive review by National Academies of Science before going to the Federal Government for consideration of inclusion in the final Third National Climate Assessment Report. While the report is in its infancy and has many rounds of reviews to go through, it is an extremely important document that should be read while it is still open for public commentary.

temp change

Here are some interesting points from the draft report:

U.S. average temperature has increased by about 1.5°F since 1895, with more than 80% of this increase occurring since 1980.

The length of the frost-free season (and the corresponding growing season) has been increasing nationally since the 1980s, with the largest increase occurring in the western U.S.

Further increases in the frequency and intensity of extreme precipitation events are projected for most U.S. areas

The intensity of the strongest hurricanes is projected to continue to increase as the oceans continue to warm.

Global sea level has risen by about 8 inches since reliable record keeping began in 1880. It is projected to rise another 1 to 4 feet by 2100.

The sharp decline in summer Arctic sea ice has continued, is unprecedented, and is consistent with human-induced climate change. 2012 has set a new record for minimum area of Arctic ice.

arctic ice


graphics via NCADAC draft report

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