Signs of life

In my last post, I said winter was over. But it had only just begun. Now in April, we've had brilliant sunshine but frost almost daily. 

Our experimental grape vines seem to have survived the winter.  They have not leafed but are budding strongly.  Hope!

The weather has been very strange. The winter was mild but very wet and stormy. Then the cold snap came just before most things started budding.  A few garden plants didn't survive but I am hopeful that the cold was enough to harden the grape vines. They need a bit of cold weather to shock them into action.The last week has been blissfully sunny with no rain at all. How very strange. We went from 3 degrees C to 18.5 degrees centigrade overnight. Now it's back down to 3 degrees again as we cycle within a huge anticyclone and the winds clock between northerly and southerly.

The fruit trees are laden with flower buds ready to burst open, but there is no sign of the honey bees. The hive appears to be dead. How sad, how very very sad. Especially after reading the astonishing novel called The Bees. I couldn't wait to watch them this year having studied their behaviour and read this profoundly influential story. But only bumble bees have appeared in our garden. What will we do?  There is word of hives having collapsed all over the country, thought to be the aftermath of an extraordinarily wet and cool summer that never came last year.

Meanwhile the climate change reports indicate that globally March was once again the hottest month on record (not here!) and the 11th consecutive month of increasing temperatures. According to data from the Japan Meteorological Agency (JMA), the average global temperatures were 1.07 °C (1.9°F) above the average in March since records began in 1891. Data released by NASA shows that March was 1.65°C (3.0°F) warmer than the averages between 1951 and 1980.

The National Oceanic and Atmospheric Administration (NOAA), the primary keeper of such data in the U.S., reported even more dire news. "The average global temperature across land surfaces was 2.33°C (4.19°F) above the 20^th century average of 3.2°C (37.8°F), the highest March temperature on record, surpassing the previous March record set in 2008 by 0.43°C (0.77°F) and surpassing the all-time single-month record set last month by 0.02°C (0.04°F). The combined average temperature over global land and ocean surfaces for March 2016 was the highest for this month in the 1880–2016 record, at 1.22°C (2.20°F) above the 20^th century average of 12.7°C (54.9°F)."

So according to NOAA's figures, we've already surpassed the 2 degree mark. Anomalies are occurring all over the world.

Meanwhile, last month we visited the Chiltern Valley Winery & Brewery near Henley in England and learned all about small winery viticulture in the UK. They had just pulled up all their grapes and replanted with new varieties. Their wines are quite interesting but they produce mainly with other growers' fruit. We learned principally that it takes a fair bit of investment to get a little operation going and so it's best to produce small quantities of liqueurs. We also learned that we planted the vines in the wrong orientation (up and down the hill instead of across the hill facing the sun).  It was great fun, the guide was very knowledgeable and entertaining, and fun was had by all.

Now let's get back to growing grapes.

Impact of Climate Change on Viticulture Globally

Numerous articles have been published about the effects of climate change on the wine industry and mitigation strategies are already being implemented. It is always interesting to me that man feels compelled to control his environment. That usually lasts long into the period after realization has set in that controlling it is in fact impossible and moving on is a more sensible solution. But of course, moving on from an estate that's been in the family for centuries is not a really feasible proposition.

The higher likelihood is that someone recognizes the potential and establishes competition elsewhere which eventually becomes more successful. At that point, the original estate begins to need more income and finds new crops to plant that are more suitable to the new environment. At least, that's how I imagine things to work and have read similar stories.

Michelle Renee Mozell and Liz Thach write in their recent review article, "Though wine is not essential to human survival, wine is an important product of human ingenuity." They tackle the global literature  about the impact of climate change on the global wine industry. It's that human fascination with wine that makes wine production a sacrosanct activity and may even be the impetus that gets governments on board the climate change mitigation train.

The entire range of grape growing climate zones is about 10°C globally; for some grapes, such as Pinot noir, the range is an even narrower 2C°. Many progressive wine growers have already taken steps to mitigate the effects of climate change, including cooling the grapes by misting and changes irrigation practices. But in the long run, those types of practices will be affected by availability of fresh water as we are seeing in California. Some are changing the manner in which they process the grapes into wine and others are planting new more tolerant varieties or buying up land in more favourable climates. It is surprising how aware these growers are of the changing climate compared with the naysayers in the public domain. But of course, farmers and fishermen are always among the first to notice the changes, it's just that they are infrequently asked by the scientists to share their observations. Perhaps now they will be, especially as funding for science drops out.

But there are three areas that still need research to determine optimal strategies:

• studies to identify how plants, microrganisms and pathogens will respond to simultaneous rise in temperature and CO2 while rainfall decreases in traditional wine growing regions
• means by which to reduce emission of the greenhouse gasses, nitrous oxide and methane, by vineyards during the production of wines
• resource management throughout the production chain

The authors conclude, "wine's future is tied inextricably to a vital Earth and a vital population. Grape growers and winemakers must understand both the dire condition of the planet and the small, but significant, role their industry holds in the human matrix. They must seek, therefore, in a responsible manner, their proper and effective role in the adaptation to and the mitigation of global climate change. The future of the wine industry is dependent upon an effective course of action. The Romans declared, 'Vino veritas,' or 'in wine there is truth'. The simple, yet tragic, truth is the Earth's climate is changing. How the wine industry responds will determine if the industry is to survive."



www.sciencedirect.com
Wine Economics and Policy 3 (2014) 81–89
The impact of climate change on the global wine industry:
Challenges & solutions
Michelle Renée Mozell, Liz Thach
Sonoma State University Wine Business Institute, 1801 E. Cotati Blvd, Rohnert Park, CA 94928, USA
 http://ac.els-cdn.com/S2212977414000222/1-s2.0-S2212977414000222-main.pdf?_tid=6c72a3ec-57d4-11e5-9028-00000aacb361&acdnat=1441900736_d33fc9b7e34238d304eb94e45364105f