Saturday 14 August 2021

California is running out of water

This could be a record bad year for wines, which could result in decreased supplies and increased cost across the board. In France, they are predicting 30% lower yields than normal due to the late frost early in the season. In California, they are reducing their yield on purpose by cutting some of the grape clusters off to concentrate moisture in the remaining clusters to save the crop altogether. 

Many of the classic winemaking towns have restricted water supplies. Some have even denied farmers access to the reservoirs completely. Nearly 1000 landowners in Mendocino county were told there wasn't enough water for them. An emergency law passed enables the government to prohibit people from diverting water. All these people flocked to the sunshine in the west without considering if they could survive there. What to do when you have millions of people and drought for two years in a row? The Russian River valley known for its vineyards is in dire straits with farmers trucking water to their vineyards. The Dixie Fire in the Sierra Nevada is the largest wildfire in Calfornia's history. 

When the NY Times does an article about vineyards suffering, you know it's bad. But it's a really interesting article about two different methods of growing grapes. One manages the vineyard without watering and other interventions, the other waters in interesting patterns. It seems that watering in vineyards causes the grapes to keep their roots shallow. Avoiding watering encourages the vines to grow deep roots in search of water thereby increasing their resilience to other climatic conditions and pestilence. 

We've decided not to water and once again we seem to have made a decision that makes sense without us knowing so scientifically. But it makes sense to me that if vines grow long above ground they would have to grow long roots below ground to anchor themselves. And they do. 

Curiously, when we first moved here, there were no mushrooms growing on the land. Since we planted trees, we've got many varieties of mushrooms popping up all over the place, suggesting that the earth is returning to a natural vegetative state and the fungi have moved in. That means the land is healing itself and for that I am grateful. Land that has fungi should retain moisture better and should also drain better as they add structure to the soil that enables penetration. 

As of the 12th of August, at 122 mm, we've already had twice as much rain as in all of June or July. The grapes are finally getting plumper. But do they have the time to get to a nice size before veraison?





 

PS Hamel Family Wines switched their vineyard to dry farming with excellent results. 


Oregon on fire

Who would have thought that cool Oregon would be growing AlbariƱo at the Fault Line Vineyards in the Umpqua Valley American Viticultural Area?  But this year, the heating degree units may be almost 30% higher than normal and that may be too warm for the grapes. Not only is it hot, but it also is dry this year. And they are looking at yet another record-making heatwave

The weather across the US remains unsettled and unusual. It does not appear to be a good time to be involved in agriculture in many areas of the world. 

Saturday 7 August 2021

Rain and more rain

Clew Bay


After weeks of heat and drought, we now are getting rain and plenty of it. Yesterday, it poured buckets of rain all day. In fact, the Newport Furnace station, our closest station, reported the highest rainfall total in the country at 26.2 mm. The grapes should start getting plumper now. Hopefully, they won't get too much water. But it's not something we can control. 

Newport Furnace26.218.914.09.5 (18)17.974313.7

Station Rain MaxT MinT Sun Wind Gust Soil Global Gmin mm oCoChrKts (Km/h)Kts (Km/h)oCJ/cm^2oC

Our rainfall total for August as of the 6th has already surpassed our total for all of July and all of April and is approaching our monthly total for June. And there haven't been any tropical storms coming our way over that period either. What a strange year! 

Meanwhile, the entire west coast of North America is on fire from BC to CA and experiencing severe drought and huge water restrictions. Greece and Turkey are experiencing  huge wildfires as is Siberia. Russia mobilised the army to combat the fires. South Africa has a serious drought and are predicting day zero soon when the water in Nelson Mandela Bay provinces will dry up. I will write a post on what's happening with the vineyards specifically relative to drought and fires soon. 

The Met Eireann stats for Newport are below for reference. 

MONTHLY VALUES FOR NEWPORT UP TO 06-AUG-2021

Total rainfall in millimetres for NEWPORT

YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
2021225.6147.6141.145.6113.564.159.760.3857.5
2020139.5342.8178.225.554.7164.5187.9137.9153.4228.0206.6232.72051.7
2019146.8115.0228.5100.7112.576.682.7228.9175.5160.7148.1220.61796.6
2018274.6155.686.294.370.465.958.6179.1148.3140.9172.6201.01647.5
LTA166.7126.5141.296.894.789.7100.9132.5131.5176.0170.4180.21607.1

Mean temperature in degrees Celsius for NEWPORT

YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
20215.06.77.99.010.413.317.516.410.2
20207.26.06.611.012.813.814.416.013.810.59.16.110.6
20196.98.47.910.211.713.116.315.513.710.37.17.110.7
20185.94.65.59.113.116.116.115.012.410.98.38.110.5
LTA6.16.17.39.011.513.815.415.413.510.88.36.510.3

Mean 10cm soil temperature for NEWPORT at 0900 UTC

YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
20213.65.06.88.210.914.317.9n/a9.6
20205.74.75.49.713.014.814.916.313.79.58.05.110.1
20196.16.16.88.912.213.816.715.713.59.46.25.610.1
20184.42.94.08.213.117.418.415.112.19.66.66.69.9
LTAn/an/an/an/an/an/an/an/an/an/an/an/an/a

Global Solar Radiation in Joules/cm2 for NEWPORT

YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
202166201334720370456945569045488494558564245228
2020626310808245454619258476435374021540555255581848763195209326164
2019537810595213063764849884496074539537116264601740681674766313728
2018597613390252693470958446598495144834923226191712378424068335662
LTAn/an/an/an/an/an/an/an/an/an/an/an/an/a

Potential Evapotranspiration (mm) for NEWPORT

YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
20217.622.930.762.976.370.787.814.2373.1
202017.621.935.070.291.672.966.266.442.728.113.610.4536.6
201913.421.535.460.479.078.279.562.942.829.214.814.3531.4
201816.321.835.752.088.2102.487.258.737.930.218.011.5559.9
LTAn/an/an/an/an/an/an/an/an/an/an/an/an/a

Evaporation (mm) for NEWPORT

YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
202110.932.145.489.9111.2102.0117.219.5528.2
202022.431.951.898.9130.8104.894.392.759.138.818.113.6757.2
201917.729.552.087.3111.6112.8109.688.859.939.618.917.9745.6
201821.930.251.776.4127.4140.4120.782.253.140.622.814.9782.3
LTAn/an/an/an/an/an/an/an/an/an/an/an/an/a

DEGREE DAYS BELOW 15.5 DEGREE CELSIUS FOR NEWPORT

YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
20213252472362001677920N/AN/AN/AN/AN/AN/A
2020257276275143111735531711561932911935
2019266200235165130892736671642512621892
20182983063091941045031441001472152302027

Notes on the Data

Evaporation and PE data are calculated using Penman/Monteith formulae.
The ‘LTA’ (referred to within a table) is average for the climatological long-term-average (LTA) reference period 1981-2010.
Data updated daily at Mid-day.