10 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Ice"  
Results: 1 - 10
open access

Separations on water-ice. Final report

Description: This report focuses on processes to separate water frozen into ice. Research topics include the following: normal phase columnar chromatography; electrophoresis in a planar format; and zone melting type separations on a solid column of ice. Attempts were made to dope the emulsion with {beta}-cyclodextrin in order to separate commercially important chiral drugs such as Inderal.
Date: July 1, 1998
Creator: Dasgupta, P. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Los Alamos coupled climate model

Description: To gain a full understanding of the Earth`s climate system, it is necessary to understand physical processes in the ocean, atmosphere, land and sea ice. In addition, interactions between components are very important and models which couple all of the components into a single coupled climate model are required. A climate model which couples ocean, sea ice, atmosphere and land components is described. The component models are run as autonomous processes coupled to a flux coupler through a flexib… more
Date: December 31, 1998
Creator: Jones, P. W.; Malone, R. C. & Lai, C. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Glacier calving, dynamics, and sea-level rise. Final report

Description: The present-day calving flux from Greenland and Antarctica is poorly known, and this accounts for a significant portion of the uncertainty in the current mass balance of these ice sheets. Similarly, the lack of knowledge about the role of calving in glacier dynamics constitutes a major uncertainty in predicting the response of glaciers and ice sheets to changes in climate and thus sea level. Another fundamental problem has to do with incomplete knowledge of glacier areas and volumes, needed for… more
Date: August 1, 1998
Creator: Meier, M.F.; Pfeffer, W.T. & Amadei, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The characterization of atmospheric aerosols: Application to heterogeneous gas-particle reactions

Description: This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project of the Los Alamos National Laboratory (LANL). The objective of this collaborative research project is the measurement and modeling of atmospheric aerosols and heterogeneous (gas/aerosol) chemical reactions. The two major accomplishments are single particle characterization of tropospheric particles and experimental investigation of simulated stratospheric particles and reactions thereon. Using … more
Date: December 31, 1998
Creator: Robinson, J. M.; Henson, B. F.; Wilson, K. R.; Prather, K. A. & Noble, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modification of heterogeneous chemistry by complex substrate morphology

Description: This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Chemistry in many environmental systems is determined at some stage by heterogeneous reaction with a surface. Typically the surface exists as a dispersion or matrix of particulate matter or pores, and a determination of the heterogeneous chemistry of the system must address the extent to which the complexity of the environmental surface affects the reacti… more
Date: December 31, 1998
Creator: Henson, B. F.; Buelow, S. J. & Robinson, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improvements in modeling the microphysical and radiative properties of cirrus clouds using the Regional Atmospheric Modeling System (RAMS). Final report

Description: The main work activity during this period was the refinement and GCM parameterization of the treatment of ice cloud radiative properties, developed for this project. The treatment has now been rigorously tested and improved, and can now be used with confidence in radiation transfer schemes. The ice Cloud radiation scheme has also proven useful in satellite remote sensing. The radiation scheme differs from others in the thermal infrared, where it is assumed that photon tunneling does not occur f… more
Date: August 1, 1998
Creator: Mitchell, D. L.; Koracin, D. & Edwards, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lunar South Pole space water extraction and trucking system

Description: This concept proposes to use thermal processes alone to extract water from the lunar South Pole and launch payloads to low lunar orbit. Thermal steam rockets would use water propellant for space transportation. The estimated mass of a space water tanker powered by a nuclear heated steam rocket suggests it can be designed for launch in the Space Shuttle bay. The performance depends on the feasibility of a nuclear reactor rocket engine producing steam at 1,100 degrees Kelvin, with a power density… more
Date: March 1, 1998
Creator: Zuppero, A.; Zupp, G.; Schnitzler, B.; Larson, T. K. & Rice, J. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quantifying Hydrometeor Advection and the Vertical Distribution of Cloud Fraction Over the Sgp Cart Site

Description: A single column model (SCM) is, in essence, an isolated grid column of a general circulation model (GCM). Hence, SCMs have rather demanding input data requirements, but do not suffer from problems associated with balance of a GCM. Among the initial conditions that must be used to describe the initial state of the SCM column are the vertical profile of the horizontal wind components and the vertical profiles of cloud water and ice. In addition, the large-scale divergence and advective tendencies… more
Date: March 23, 1998
Creator: Miller, M. & Verlinde, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Quantifying hydrometeor advection and the vertical distribution of cloud fraction over the SGP CART Site

Description: A single column model (SCM) is, in essence, an isolated grid column of a general circulation model (GCM). Hence, SCMs have rather demanding input data requirements, but do not suffer from problems associated with balance of a GCM. Among the initial conditions that must be used to describe the initial state of the SCM column are the vertical profile of the horizontal wind components and the vertical profiles of cloud water and ice. In addition, the large scale divergence and advective tendencies… more
Date: May 1, 1998
Creator: Miller, M. & Verlinde, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Power line damage, electrical outages, reduced in the {open_quotes}sleet belt{close_quotes}

Description: Companies that depend on reliable supplies of electricity, as well as electrical utilities, need to defend against weather-related damage and power outages. Weather-related damage claims in the U.S. totaled $16 billion during the ten-year span from 1980 through 1989 and have already reached $48 billion in the first five years of this decade, evidence that climate change could be causing more severe storms. This makes technology that minimizes weather damage all the more welcome. Ice and snow bu… more
Date: April 1, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen