Download or read book Southwestern United States Summer Monsoon Source--Gulf of Mexico Or Pacific Ocean? written by John E. Hales and published by . This book was released on 1973 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: "During summer the interior of the United States and northern Mexico west of the Continental Divide experience frequent intrusions of moist tropical air. In the months of July and August the greatest northward flux occurs. June and September are transition months from spring to summer and summer to falI, respectively. During these months, particularly June, there is a predominance of rather dry air-mass conditions"--Introduction