Wind observations are measured in two ways .... wind speed and wind direction. Where possible measuring devices should be in a large open area away from possible interference such as building, trees etc.
Electron transport system. Definition. noun. A sequence of redox reactions wherein the transfer of electrons from an electron donor to an electron acceptor is coupled with the transport of protons across a membrane to generate a proton gradient that drives ATP synthesis.
For human transport systems, see active transportation. Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration -- in the direction against some gradient or other obstructing factor (often a concentration gradient).