Fire Management Notes

Angebote / Angebote:

Excerpt from Fire Management Notes: Volume 53-54, No. 3, 1992-93Temperatures and Humidities. Adapting a temperature and humidity forecast is easy and is done often. A 20-percent difference in cloud cover may lead to a change of 1 to 3 degrees F in the high temperature, a slightly higher relative humidity, and a short delay in the shift to upslope and upvalley winds. Such small differ emees rarely throw the conditions out of prescription. A new high tempera ture and low humidity can be deduced, and fire behavior calculations can be adjusted. Usually, if the actual temperature differs from the forecast by 5 degrees or more, or the actual humidity differs from the forecast by 15 percent or more, it is best to request a new forecast.Al Roberts of the usda Forest Service, Rocky Mountain Regional Office (co), provided an excellent method to track temperature and humidity and adapt the forecasted afternoon extremes. He suggests plotting the forecast temperatures and humidities for every 2 to 3 hours, then plotting the measured parameters on the same graph paper. When compar ing the two trend lines, what becomes evident is the difference between the forecast temperature and humidity and the measured temperature and humidity. This information allows the fire manager to make a slight but important adjustment to the forecast of the high temperature and low humid ity, yielding a more accurate depiction of the fire behavior conditions.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.