Download or read book Comparison of Fog Drop Size Spectra Measured by Light Scattering and Impaction Techniques written by Bruce A. Kunkel and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison was made between the drop size data obtained with a PMS FSSP-100 and a Calspan droplet sampler. Data were collected in simulated fogs in the Calspan environmental chamber and in natural fogs at the AFGL Weather Test Facility at Otis AFB, Massachusetts. Above 4 micrometers radius, the data from the two instruments agree quite well. Below 4 micrometers, however, the Calspan sampler shows a decrease in droplet count with decreasing radius whereas the FSSP shows an increase in count with decreasing radius. As a result, in natural fogs the Calspan sampler frequently shows a mode in the droplet concentration between 4 and 8 micrometers whereas the FSSP frequently shows no mode in droplet concentration existing within the drop size range of the instrument. In the simulated fogs, where the concentration of small particles was low, the modes agree very well. Since the droplets below 4 micrometers contribute little to the liquid water, there is excellent agreement in the distribution of liquid water with particle size for both simulated and natural fog. The extinction coefficients calculated from the FSSP drop size distribution are lower than the measured extinction coefficients in the lighter fogs but larger in the denser fogs.

Download or read book Handbook of Geophysics and Space Environments written by U.S. Air Force Geophysics Laboratory and published by . This book was released on 1985 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microphysical Properties of Fog at Otis AFB written by Bruce A. Kunkel and published by . This book was released on 1982 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1981 with total page 1340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Vapor Precipitation Clouds and Fog written by D. D. Grantham and published by . This book was released on 1983 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sixth Symposium Meteorological Observations and Instrumentation January 12 16 1987 New Orleans La written by and published by . This book was released on 1986 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Geophysics and the Space Environment written by U.S. Air Force Geophysics Laboratory and published by . This book was released on 1985 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Geophysics and the Space Environment written by Adolph S. Jursa and published by . This book was released on 1985 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Evaluation of an Advection Fog Prediction Model written by James Weyman and published by . This book was released on 1984 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to Air Weather Service requirements, the Air Force Geophysics Lab has been involved in research in the development of mesoscale advection fog prediction techniques. A two-dimensional fog prediction model developed at the Naval Environmental Prediction Research Facility (NEPRF) was selected for evaluation because it can operate on a mini-computer of the size planned for the Air Force's Automated Weather Distribution System (AWDS). Six case studies developed by Calspan Advanced Technology Center were used to test the model's accuracy. These case studies covered a wide range of fog/stratus formation and dissipation stages. Four major weaknesses were identified in the model. The most important was that cloud tops increased in temperature through infrared radiative heat processes rather than decreased. The other weaknesses include lack of solar radiation processes, unreliable treatment of the height of mixed layer during stable conditions, and insufficient handling of vertical motions. The model may have potential in AWDS. However, these weaknesses must first be corrected.

Download or read book R D Abstracts written by Technology Reports Centre (Great Britain) and published by . This book was released on 1981 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Implications of the Khrgian Mazin Distribution Function for Water Clouds and Distribution Consistencies with Aerosols and Rain written by V. G. Plank and published by . This book was released on 1991 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Air Pollution Control written by and published by . This book was released on 1989 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Research Papers written by U.S. Air Force Geophysics Laboratory and published by . This book was released on with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1981 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book Chemistry of Multiphase Atmospheric Systems written by Wolfgang Jaeschke and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapidly increasing interest in the problems of air pollution and source-receptor relationships has led to a significant expansion of knowledge in the field of atmospheric chemistry. In general the chemistry of atmospheric trace constituents is governed by the oxygen content of the atmosphere. Upon entering the atmosphere in a more or less reduced state, trace substances are oxidized via various pathways and the generated products are often precursors of acidic compounds. Beside oxidation processes occurring in the gas phase, gaseous compounds are often converted into solid aerosol particles. The various steps within gas-to-particle conversion are constantly interacting with condensation processes, which are caused by the tropospheric water content. Thus in addition to the gaseous state, a liquid and solid state exists within the troposphere. The solid phase consists of atmospheric conversion products or fly ash and mineral dust. The liquid phase consists of water, conversion products and soluble compounds. The chemistry occurring within this system is often referred to as hydrogeneous chemistry. The chemist interprets this term, however, more strictly as reactions which occur only at an interphase between phases. This, however, is not always what happens in the atmosphere. There are indeed heterogeneous processes such as reactions occurring on the surface of dry aerosol particles. But apart from these, we must focus as well on reactions in the homogeneous phase, which are single steps of consecutive reactions running through various phases.