Helmut Erich Landsberg was a noted and influential climatologist. He was born in Frankfurt, Germany. Landsberg was an important figure in meteorology and atmospheric science in education, public service and administration. He authored several notable works, particularly in the field of particulate matter and its influence on air pollution and human health. He is the first to write in English about the use of statistical analysis in the field of climatology and implemented such statistical analysis in aiding military operations during World War II. He received a number of significant honors during his life. Several honors are now bestowed in his name in recognition of his contributions to his field. Landsberg received his PhD from the University of Frankfurt in Germany and then moved to the United States in 1934 to teach geophysics and meteorology at Pennsylvania State University.  While there, he offered a graduate seminar on bioclimatic problems, the first such graduate course to be taught in the United States.  He was subsequently appointed to the faculties of the University of Chicago (1941) and the University of Maryland (1967), with which he continued to be affiliated until his death. He received the National Medal Of Science in 1983.