NCAR Technical Notes

The NCAR Technical Notes Collection comprises over 500 scientific and technical reports, issued by NCAR divisions and programs, and consists of data compilations, theoretical and numerical investigations, and experimental results.


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Boundary Layer Profile Measurement System
Boundary Layer Profile Measurement System
The NCAR Field Observing Facility developed a new tethered-balloon wing system that accurately measures the vertical profile of temperature, wind speed, wind direction, and humidity. This report presents a brief survey of the capabilities of this system for making meteorological measurements of the boundary layer profile up to 5000 ft above the ground.
Boundary Layer Profile Measurement System Engineering Report
Boundary Layer Profile Measurement System Engineering Report
The NCAR Field Observing Facility developed a new tethered-balloon wing system, known as the Meteorological Atmospheric Testing (MAT) Wing, which takes meteorological measurements of the profile of the atmospheric boundary layer up to 5000 ft above the ground. This engineering report presents specifications and instruction for the operation, calibration, and maintenance of this system.
Boundary Subroutine for the NCAR Global Climate Model
Boundary Subroutine for the NCAR Global Climate Model
This report summarizes the parameterizations of surface processes currently being used in the NCAR grid point GCM. It treats in particular: (i) the calculation of ground, snow or sea ice surface temperature in response to net surface heating and depending on soil or snow heat capacity and thermal conductivity; (ii) the calculation of soil moisture, evaporation, surface and groundwater runoff; (iii) the specification of vegetation cover in terms of fractional ground shading, relative area of transpiring and nontranspiring plant surfaces, and land use type; (iv) the surface albedo in terms of soil moisture, vegetation cover, and snow cover, including the shading of snow by vegetation; (v) the plant water budget including dew, intercepted precipitation and transpiration as limited by stomatal resistance and soil dryness; (vi) surface drag coefficients as a function of bulk Richardson number and vegetation cover; (vii) the determination of foliage temperature in response to energy balance requirements and consequent fluxes of heat and moisture from the foliage to canopy air.
Bridging data lifecycles: Tracking data use via data citations workshop report
Bridging data lifecycles: Tracking data use via data citations workshop report
Digital technologies for identifying and linking to resources on the internet promise to make connections between scholarly publications and their underlying data more transparent and traceable. "Data citations" are formal citations included in reference lists of published articles to data resources that led to a given research result. The workshop "Bridging Data Lifecycles: Tracking Data Use via Data Citations," held by the University Corporation for Atmospheric Research (UCAR) in April, 2012, brought together 80 people from 30+ organizations to discuss many aspects of data citations. This report outlines the important activities, tools, challenges, and impediments to data citation initiatives that were identified during the workshop. The report also outlines a set of recommendations on how to get started on the processes of assigning citations and actionable identifiers to data sets without having solved every issue. By making it easy for users, providing openness and transparency in how data citation tools are being applied, and leveraging the interest and expertise of the multiple communities of stakeholders, organizations can promote, enable, and embed data citations as regular components of the scholarly communication infrastructure.
Broadcast media on-line survey on extratropical and tropical cyclone forecast information: NOAA Surge Roadmap Project and Hurricane Forecast Improvement Program
Broadcast media on-line survey on extratropical and tropical cyclone forecast information: NOAA Surge Roadmap Project and Hurricane Forecast Improvement Program
This report on a survey of broadcast meteorologists (also referred to as the media) is part of a larger body of work to better understand how National Oceanic and Atmospheric Administration weather forecast products might improve public understanding and response to tropical and extratropical storms. The June - July 2012 web-based survey obtained responses from 51 broadcast meteorologists at local television stations serving the Atlantic, Gulf and Pacific coasts as well as Alaska, Puerto Rico, and Hawaii. The major focus of the survey is on storm surge, but we also solicited media opinions on topics such as their perceptions of public understanding of forecasts and their assessments of several tropical cyclone forecast track and wind graphics as well as several graphic prototypes developed for communicating storm forecast information. Broadcast meteorologists indicated strong support for the NWS issuing storm surge watches and warnings - 90% agreed that watches should be issued and 95% supported a storm surge warning. Most believed these products would result in greater attention to these threats in their weathercasts and to the public paying more attention to storm surge.
CCM Modular Processor Users' Guide (Version PROC02)
CCM Modular Processor Users' Guide (Version PROC02)
This document is a complete description of the capabilities of the PROC02 version of the CCM Modular Processor, including all of the information needed to run the code on the Crays at NCAR. A few aspects of Processor design are discussed where appropriate, but there is no attempt to document the details of the code. This is a rewrite of the NCAR Tech Note TN-261+IA "CCM Modular Processor Users' Guide (Version PROCO1)", January 1986. A short description of PROC02 relative to PROCO1 is also available as NCAR Tech Note TN-296+IA "Differences Between the PROCO1 and PROC02 Versions of the CCM Modular Processor" October 1987.
CCM Processor Users' Guide (UNICOS Version)
CCM Processor Users' Guide (UNICOS Version)
This document is a complete description of the capabilities of the CCM Processor, including all of the information needed to run the code on the Crays at NCAR. A few aspects of Processor design are discussed where appropriate, but there is no attempt to document the details of the code. This version of the CCM Processor Users' Guide (UNICOS Version) supercedes all previous versions (NCAR/TN-290+IA, NCAR/TN-335+IA), updates and drafts of this document. The NCAR CCM Processor is the primary tool for the analysis of data output by the NCAR Community Climate Model (CCM). Its main function is to perform the processing and data reduction normally associated with Model climate runs. It is also useful for the analysis of forecast and observational data that are in history tape format. Like the CCM, the Processor is a community facility maintained by the CCM Core Group.
CCM Progress Report - June 1993
CCM Progress Report - June 1993
This report consists of: Brief reports required of all CCM users, both inside and outside of NCAR -- CCM Progress report on CCM2 along with details of the reports which document the model and its simulated climate -- work underway in the Climate Modeling Section -- a report on the fourth CCM workshop held in June 1993 --a progress report consisting of cumulative lists of CCM-related theses and publications -- CCM manuals which document the current and past supported versions of the CCM and its associated processor.
CCM Progress Report--July 1990
CCM Progress Report--July 1990
This report is a accumulation of brief reports required of all Community Climate Model (CCM) users both inside and outside of NCAR. The report serves to augment periodically held CCM workshops and to foster interchange between all users and potential users of the NCAR CCM. Also included are cumulative Listing of CCM-related Publications.
CCM2 Datasets and Circulation Statistics
CCM2 Datasets and Circulation Statistics
This technical report documents the data findings from simulations and condensations which includes actual simulations, climatological monthly averaged sea surface temperature; 10 and 20 year simulation cases; simulation with BATS and other resolutions.

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