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January 11, 2005

Vineyard Data

So before I left for India I went out to the vineyard and downloaded the data from the three temperature/humidity data loggers we put out. With the raw data on my laptop, I've been able to play around with the data and graphs a bit. It's fascinating to see some of the temperature variances that can occur in a single field. True to our predictions, the low spot (position 2) of the vineyard tends to be the coolest area. But it was surprising to see temperature differences of up to six degrees F between the three loggers. They are only a few hundred feet apart, and yet the temperature variances can be quite dramatic.

View the layout of the data loggers.

View position #1.

View position #1 data logger from ground up (looking under the rain shield.

I'm in the process of redesigning the Web site, but in the interim I've posted the data. Check out the .pdf files, particularly the "variance" ones - pretty interesting stuff. In the years to come, it will be even more interesting to perform analysis on this data during the growing seasono to see the effects of temperature etc. on the resulting brix, pH, and tA (titratable acidity) of the fruit at harvest. In addition, this data should give us an idea of potential winter damage to the vines - vinifera can be severely damaged or killed at -10 degF, while hybrids are more cold tolerant with some being able to withstand temperatures as low as -20 degF.

Posted by Stephen at January 11, 2005 2:07 PM