Posted by Georgine Yorgey | October 21, 2014
In a previous post, I explained that available evidence currently indicates nitrous oxide emissions may be fairly low in the inland Pacific Northwest, compared to other cropland agricultural systems in the U.S. and world. If ongoing research confirms these early results, then I suggested that efforts to reduce nitrous oxide emissions need to focus on strategies that offered strong co-benefits. Read more »
Posted by Chad Kruger | September 29, 2014
The observed temperature records of the US Pacific Northwest show a small, but statistically significant amount of warming of just over 1 degree F since the year 1900. A paper published in March of this year by Abatzaglou, Rupp and Mote (2014) used a multiple linear regression model to “tease out” the contributions of different influences on climate and “to apportion trends to internal climate variability, solar variability, volcanic aerosols, and anthropogenic forcing [a.k.a. human greenhouse gas emissions]”. Unsurprisingly, the finding of this study was as expected:
Anthropogenic forcing was a significant predictor of, and the leading contributor to, long-term warming; natural factors alone fail to explain the observed warming.
Filed under Climate Change
Posted by Chad Kruger | September 12, 2014
One of the caveats I always state when presenting the results of our research on projected climate change impacts on PNW agricultural production is: we don’t yet know if climate change will disrupt our existing regional climate cycles. To date, the climate forecasts for our region indicate a future where climate change amplifies the current cycles – resulting in a future that is warmer and possibly slightly wetter on average, but still keeping the pattern of relatively short-cycling between wet and dry periods. These wet and dry periods rarely last for more than a couple of years. Read more »
Filed under Climate Change
Posted by Chad Kruger | September 9, 2014
In a recent interview that covered the gamut of oft-cited threats to agricultural sustainability and food security (drought, food safety, energy disruption, economics, terrorism, chemical pollution, genetic pollution, impacts on pollinators, soil erosion, climate change, etc.), I was asked which threat I thought was the biggest. I was completely stumped. For every threat that came to mind as “the big one” I could come up with at least two arguments why a different threat was bigger. Read more »
Dairy Waste Biorefineries: An Innovative Way to Further Reduce Greenhouse Gases on Dairies in Washington State
Posted by Nicholas Kennedy | September 3, 2014
Washington State, 10th in milk production nationally, is also at the top of the list for greenhouse gas (GHG) emissions produced from dairy cattle. According to the latest statistics by the EPA, in 2012 Washington State ranked 8th in methane (CH4) emissions from dairy manure management and 12th in nitrous oxide (N2O) emissions (EPA, 2014). Understanding the effect the dairy industry has on climate change has led the state to leverage its many public research institutions and agencies including the Washington State Department of Agriculture (WSDA), Washington State Department of Ecology, and Washington State University’s Center for Sustaining Agriculture and Natural Resources (WSU CSANR) to help dairy farmers better manage and mitigate GHG emissions on large scale dairies also known as concentrated animals feeding operations (CAFOs). Read more »
Posted by Chad Kruger | August 28, 2014
A new paper published in Environmental Science & Technology (DeLucia et al., 2014) suggests that scientists have drastically underestimated the earth’s theoretical potential to produce biomass – by as much as 2 orders of magnitude! That’s going to take a minute to wrap my mind around.
Posted by Craig Frear | August 11, 2014
Nobel Peace Prize recipient and Director of the Purdue University Climate Change Research Center, Dr. Otto Doering, recently gave a keynote speech where he highlighted his definition of Wicked Problems facing the globe and the US.
In brief, he used US struggles regarding affordable health care and the debate regarding the Affordable Health Care Act as a prime example of a Wicked Problem. Regardless where one might stand politically on such an issue, it is clear that the issues of affordable health care and potential policy solutions are of great importance to many, with its tentacles reaching into vast and diverse sectors of our society. No clear consensus on how to solve the problem appears to be present, due to the complexities and interrelationships involved. In particular, solutions can be shown to result in a cascade of unknown consequences, either positive or negative, with individual stakeholders holding a diversity of economic, personal and social viewpoints. Read more »
Posted by Andrew McGuire | June 18, 2014
Remember last winter? As June warms and temperatures in the 90s are in the forecast, it may be hard to recall, but here in the Columbia Basin, it was dry with a few notable cold spells. That combination of cold and dry can be hard on plants, agricultural and ornamental.
Plants, both annuals and perennials, from wheat to lavender, alfalfa to ziziphus, vary in their ability to survive winter conditions. However, there are three factors that combined to make last winter a “hard winter.” Read more »
Posted by Georgine Yorgey | June 17, 2014
If you are interested in ensuring that farming is climate friendly you are likely to start thinking about nitrous oxide (N2O). Nitrous oxide is a powerful greenhouse gas (298 times as powerful as carbon dioxide, over a 100-year time frame). And nitrous oxide from agricultural soils is the single biggest contributor to agriculture’s direct greenhouse gas emissions, as estimated through inventories of greenhouse gas emissions. In Washington State, it was estimated that nitrous oxide from soils accounted for 46% of direct greenhouse gas emissions from agriculture in 2008.1 However, these estimates rely on “default” assumptions about nitrous oxide emissions that were developed from global data – and a review of existing experimental data in our region suggests these defaults may not be appropriate in our region. Read more »
Posted by Chad Kruger | May 19, 2014
The US Global Change Research Program released the Third National Climate Assessment a couple of weeks ago. Unlike some other recent climate report releases (USDA’s Climate Change and Agriculture Report, the Northwest Climate Assessment and the IPCC AR5 Draft Report), this one seemed to have been picked up to a much greater extent by the major national and regional news agencies. In fact, I’ve been interviewed by two separate NPR reporters in the region for my interpretation on what the Assessment means for PNW agriculture. Part of the reason for the media attention likely stems from the much more aggressive promotional messaging – specifically stating that climate change is hurting the economy now (I’ll have more to say on that idea in a future post).