What type of instruments would you take along if you were going on a 3-month field study to measure how the weather on a mountaintop changes over the course of season?

For a 3-month field study on a mountaintop, I would take meteorological instruments such as a digital anemometer to measure wind speed, a barometer for atmospheric pressure, and a hygrometer for humidity levels. Additionally, a temperature sensor and data logger would be essential for tracking temperature variations over time. To capture precipitation data, a rain gauge would also be important. Finally, a portable solar panel could ensure that all electronic equipment remains powered throughout the study.