Some information. Worth a look.
Federal Advisory Committee Draft Climate Assessment Report Released for Public Review
A 60-person Federal Advisory Committee (The “National Climate Assessment and Development Advisory Committee” or NCADAC) has overseen the development of this draft climate report.
The NCADAC, whose members are available here (and in the report), was established under the Department of Commerce in December 2010 and is supported through the National Oceanic and Atmospheric Administration (NOAA). It is a federal advisory committee established as per the Federal Advisory Committee Act of 1972. The Committee serves to oversee the activities of the National Climate Assessment. Its members are diverse in background, expertise, geography and sector of employment. A formal record of the committee can be found at the NOAA NCADAC website.
The NCADAC has engaged more than 240 authors in the creation of the report. The authors are acknowledged at the beginning of the chapters they co-authored.
Following extensive review by the National Academies of Sciences and by the public, this report will be revised by the NCADAC and, after additional review, will then be submitted to the Federal Government for consideration in the Third National Climate Assessment (NCA) Report. For more information on the NCA process and background, previous assessments and other NCA information, please explore the NCA web-pages. The NCA is being conducted under the auspices of the Global Change Research Act of 1990 and is being organized and administered by the Global Change Research Program.
To simply access and read the draft report, please download the chapters below. However, if you would like to submit comments on the report as part of the public process, you will need to enter the “review and comment system” and register with your name and e-mail address and agree to the terms. All comments must be submitted through the review and comment system.
The comments on the effects on Agriculture.
Draft for Public Comment Chapter 6 – Agriculture
(v. 11 Jan 2013)
DRAFT FOR PUBLIC COMMENT
Convening Lead Authors
Jerry Hatfield, U.S. Department of Agriculture
Gene Takle, Iowa State University
Richard Grotjahn, University of California, Davis
Patrick Holden, Waterborne Environmental, Inc.
R. Cesar Izaurralde, Pacific Northwest National Laboratory
Terry Mader, University of Nebraska, Lincoln
Elizabeth Marshall, U.S. Department of Agriculture
Diana Liverman, University of Arizona
1. Climate disruptions to agricultural production have increased in the recent past and
are projected to increase further over the next 25 years. By mid-century and
beyond, these impacts will be increasingly negative on most crops and livestock.
2. Many agricultural regions will experience declines in crop and livestock production
from increased stress due to weeds, diseases, insect pests, and other climate change induced stresses
3. Current loss and degradation of critical agricultural soil and water assets by
increasing extremes in precipitation will continue to challenge both rain-fed and
irrigated agriculture unless innovative conservation methods are implemented.
4. The rising incidence of weather extremes will have increasingly negative impacts on
crop and livestock productivity because critical thresholds are already being
5. Agriculture has been able to adapt to recent changes in climate; however, increased
innovation will be needed to ensure the rate of adaptation of agriculture and the
associated socioeconomic system can keep pace with future climate change.
6. Climate change effects on agriculture will have consequences for food security both
in the U.S. and globally, not only through changes in crop yields, but also changes in
the ways climate affects food processing, storage, transportation, and retailing.
The United States produces nearly $300 billion per year in agricultural commodities, with the
contributions from livestock accounting for roughly half of that value. Production of all
commodities will be vulnerable to direct impacts from changing climate conditions on crop and
livestock development and yield, and indirect impacts through increasing pressures from pests
and pathogens that will benefit from a changing climate. Agriculture continually adapts to
climate change through changes in crop rotations, planting times, genetic selection, water
management, and shifts in areas of crop production. These have proven to be effective strategies