Two weeks ago, Susanna and I made our way back to the green-roof after an unintentional hiatus. The time had come to change out the thermochron ibuttons. They can hold 2048 temperature readings meaning we could leave them out for about 12 weeks before needing to retrieve the data by connecting them to the computer. After downloading the data and starting new missions for each thermochron, we replaced them into their respective trays.
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| Susanna replanting the thermochrons. |
Because we were both out there, we decided it was the best time to collect the soil samples that we both will need for our lab tests. Susanna will be testing the water retention capacity and I will be measuring soil carbon and nitrogen levels. We collected 100 mL of soil from each of 40 trays, giving us more than enough lab work to grind through in the coming weeks.
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| Me, posing while collecting soil samples. |
The plants are looking pretty good:
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| Green-roof trays of prairie plants. |
Here are some action shots from the afternoon.
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| Planting thermochrons |
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| Thermochrons and soil collection |
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| Soil collection |
