This course will train you to become an observer of the sky, and identify and classify cloud types, cloud cover, condensation trails from aircraft (contrails), and contrail cover. We will also examine sky color and brightness, and weather phenomena that may obscure the sky. Participants will have to complete a cloud diary including photographs and learn to use the GLOBE Cloud program. We will discuss the role that clouds play in surface temperatures and climate. Online access is required from a computer or smart phone. Instruction is completely online using a learning management system, and the GLOBE web site.