How Climate Change's Extreme Weather Events Affect Grapes and Wine:

 We (Epona) joined the Porto Protocol a year or two ago; it's a collaboration of grapegrowers and winemakers, worldwide, who are focusing on "Green" issues--sustainability; adaptation to changing climate, etc. To join, they ask you to write a short case study about what you're doing or have done, to be more "Green" (we used our solar-powered, earth-sheltered winery, and our modern varieties of grapes as our "reasons to beg into the group"). Here's a report I wrote to my winery association:

Today, the PP held a discussion of experts from around the world, on "Extreme Weather Events." The panel included Gregory Jones, a research climatologist specializing in the climatology of viticulture. He is the Director of the Evenstad Center for Wine Education, holds the Evenstad Chair in Wine Studies, and is a professor and research climatologist in the Department of Environmental Studies at Linfield University. He conducts applied research for the grape and wine industry in Oregon. I think he was on the smoke taint panel for the WSU event last week?

Major points:

1. In Australia the hotter temps are causing growers to move to the cool sides of hills (KLE: Note: This is being done in Walla Walla), and to stop all leaf removal, and to adopt new canopy styles which shade the fruit.

2. We need to get politics out of the climate change discussion.

3. A number of major insurers have stopped insuring Oregon grapegrowers, due to increased climate-related claims. They are literally leaving the state.

4. Climate extreme events are being seen in every grapegrowing region. 

5. Mendoza, Argentina sees increasing summer hail events due to climate change.

I submitted this comment: "Growers should consider earlier-ripening modern varieties, which spend fewer days on the vine and thus are a bit less exposed to extreme weather events. Such as, avoiding some of the earlier Fall rains here in the US' Pacific Northwest, because they can be harvested before some of those rains." I also told my grapebreeder friends that if smoke is going to be more common, they should consider putting the tenteurier trait (colored juice in red grapes) into their grapes, as that allows a dark red wine to be made even if we press the juice off the skins immediately after harvest, thereby reducing the risk of smoke taint. Many of these guys are/were  research professors and/or very deep into practical science, and one responded that the tenteurier trait is expressed through a single identified gene and should not be too difficult to cross into grapes. At Epona we have three red winegrapes which are tenteurier: Golubok, VB Labelle, and Delicatessen. All of them are earlier-ripening than, say, Pinot Noir.

Each of us will make her/his own decision about what to change, and when and how to change it, in response to growing environmental threats.

Kenton