Originally published in 1943, this book provides a comprehensive overview of climatological methods and techniques. Conrad covers topics such as instrumentation, data collection, and statistical analysis, as well as various climatic phenomena such as air masses, storms, and droughts. He also discusses broader issues such as climate change and the impact of human activity on the climate. This is an essential reference for climatologists and anyone interested in the science of climate. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.