Download or read book Microclimatology of a Subarctic Spruce Forest and a Clearing at Big Delta Alaska written by Fernand De Percin and published by . This book was released on 1960 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This analysis deals with the microclimatology of two greatly contrasting sites at Fort Greely, Big Delta, Alaska; one in a coniferous forest (Taiga) and the other in an adjacent clearing. Continuous measurements of the vertical distribution of temperature and wind, and the measurements of solar radiation, precipitation, and globe thermometer temperatures, supplemented by the usual visual and manual observations and measurements, such as sky cover, clouds, snow depth, etc., were conducted from June 1956 through September 1957. An analysis of the data for two months, June 1956 (summer) and December 1956 (winter) is presented. (Author).

Download or read book Frequencies and Durations of Hourly Temperatures written by Fernand De Percin and published by . This book was released on 1960 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report ES written by and published by . This book was released on 1961 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical Characteristics of the Snow Cover Fort Greely Alaska 1966 67 written by Michael A. Bilello and published by . This book was released on 1970 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observations were made at 19 sites in and around the Fort Greely Military Reservation in Alaska during the winter of 1966-67 to obtain data on the depth and physical properties of the snow cover. Snowfall in 1966-67 totaled 245 cm, which was more than 2-1/2 times the seasonal normal. Maximum snow depths of 80 to 100 cm were observed in a major portion of the reservation. Measurements at nine sites showed that the snow density at Fort Greely was generally light; e.g., the average density in the forest did not exceed 0.24 g/cu cm. However, exceptions such as at Jarvis Creek, where the density averaged 0.33 g/cu cm, could be expected. On the average, less snow falls at Fort Greely than at other interior Alaskan locations; but the average density of the snow cover at all interior Alaska sites is quite light. Relationships between snow-cover properties and climate were tested using data collected at Fort Greely. The results substantiated the relationships between (1) snow hardness and snow density measurements and (2) average snow densities with average windspeed and air temperatures. Snow temperature measurements at Fort Greely showed that the snow in the forest was colder than at exposed sites, primarily because the average air temperature within the forest canopy was lower than that in the open area. (Author).

Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report written by and published by . This book was released on 1970 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report Corps of Engineers U S Army Cold Regions Research and Engineering Laboratory written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1970 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Yuma Summer Microclimate written by Arthur V. Dodd and published by . This book was released on 1959 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cold Regions Science and Engineering Monograph written by and published by . This book was released on 1969 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Steady state Two dimensional Air Flow in Forests and the Disturbance of Surface Layer Flow by a Forest Wall written by Joseph H. Shinn and published by . This book was released on 1971 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: New semi-empirical models are obtained of the mean momentum transport processes in and above forests for two contrasting micrometeorological problems: (1) the equilibrium air flow in forests far upwind of any inhomogeneity in the fetch, and (2) the nonequilibrium air flow in the transition region of the surface layer flow disturbed by the entrance into a forest. The study is confined to neutral stability conditions. Experimental data are from studies in eight forests and a wind tunnel simulation. The equilibrium mean velocity profiles in forest canopies are shown to be two-dimensional. A lateral component of flow increases downward from the top of the canopy. A semi-empirical model of mean velocity components is derived and verified for the upper 90% of the forest canopy depth. In the nonequilibrium flow in the transition region downwind of a forest wall: (a) The logarithmic velocity profile is found to be an empirical approximation for the lower part of the boundary layer, assuming that only the friction velocity varies with downstream distance. An empirical relation for the horizontal variation of the friction velocity is obtained. (b) The mean velocity profiles in a mixing zone located at midcanopy level are shown to have a low-level velocity maximum and horizontal similarity. (Author).

Download or read book Notices of Changes in Classification Distribution and Availability written by and published by . This book was released on 1977 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Windchill in the Northern Hemisphere written by Quartermaster Research and Engineering Center (U.S.) and published by . This book was released on 1958 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1961-04 with total page 1746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Arctic Bibliography written by Arctic Institute of North America and published by . This book was released on 1963 with total page 1522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dictionary Catalog of the Stefansson Collection on the Polar Regions in the Dartmouth College Library written by Stefansson Collection and published by . This book was released on 1967 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Minimizing Wind Damage in Alternative Silviculture Systems in Boreal Mixedwoods written by S. Navratil and published by . This book was released on 1995 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the nature of wind damage in forest stands and relates that damage to the silvicultural systems used or being developed for management of boreal mixedwoods. The report gives detailed consideration to the approaches for minimizing wind damage in released white spruce understory specific to the two-stage harvesting and silvicultural system. The review addresses the individual tree stability, stand stability, and external stability factors such as site characteristics, topography, windiness of the region, and sheltering effects of adjacent stands, and relates these to a framework for recognizing high-risk sites and stands. The report also discusses principles of wind damage management in the context of designing silvicultural systems with incremental wind protection levels.

Download or read book Dictionary Catalog of the Department Library written by United States. Department of the Interior. Library and published by . This book was released on 1967 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: