Data Analysis and Interpretation

Micromap™

Data from the temperature loggers is closely analysed and is used to produce a Micromap™ of the property. The Micromap illustrates the spatial variation in temperature during clear, settled weather conditions. This is the expected pattern of temperatures around the property during most subsequent frost events. It enables growers to aim frost fighting resources into areas of higher risk. The following image is an example and the are more in the slides below.

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Inversion

The mast temperature data is used to calculate the relative inversion strength. This is the temperature difference between the top and the bottom of the mast. In most cases an inversion strength of at least 2.0 °C  is recommended before implementing mechanical methods of mixing air to mitigate frosts. At times inversion strength can vary considerably around a single property rendering a mixture of frost protection methods suitable to cover a block. Some examples of inversion conditions are presented below. 

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Katabatic Drift

Katabatic drifts are generated by the drainage of colder air from hydrological catchments around the property. These breezes are only generated during clear, settled weather and the wind measurements from the masts are used to determine the drift wind strength and directions.  Graphs in the slide show below provide an example of katabatic development during the night. Accompanying rose plots are another way to portray average wind drift  strengths and directions. These factors are considered when determining the efficiency and placement of wind machines or water protection. They are also considered when advising on helicopter flight paths.

Report

Every client receives a professional report which outlines 

• the Microclimate process

• what we do in the field to collect the data

• how we analyse and interpret the data

• compares our data collected with historic data for the region to determine frost severity

• draws conclusions and makes recommendations

• if wind machines are feasible a map and GPS coordinates of their placement is included (see the slide show for examples)