It is well known that for Doppler radars transmitting uniformly spaced pulses there is a coupling between the unambiguous range (ra) and unambiguous velocity (va) given by rava = cλ/8, where c is the speed of light and λ is the radar wavelength. As shown by this relation, ra or va can only be increased at the expense of a proportional decrease of the other. Because range and velocity ambiguity ...

It is necessary to accumulate the B atoms selectively to the tumor cells for effective boron neutron capture therapy (BNCT). In order to achieve accurate measurements of B concentrations in biological samples, we employ a technique of neutron capture autoradiography (NCAR) of the sliced whole body samples of tumor bearing mice using CR39 plastic track detectors. The CR-39 detectors attached wit...

The Open-source Project for a Network Data Access Protocol (OPeNDAP) software framework has evolved over the last 10 years to become a robust, high performance, service oriented architecture for the access and transport of scientific data from a broad variety of disciplines, over the Internet. Starting with version 4.0 of the server release, Hyrax, has at its core, the Back-End Server (BES). Th...

Regional Climate Models RCMs are practical downscaling tools to yield regional climate information for assessing the impacts of climate variability and change The Paci c Northwest National Labora tory PNNL RCM based on the Penn State NCAR Mesoscale Model MM features a novel subgrid treatment of orographic precipitation for coupling climate hydrologic and ecologic processes at the watershed scal...

The accurate estimation of Antarctic precipitation variability is an essential component in understanding lobal sea level fluctuations; direct measurement techniques, however, are replete with practical difficulties. In this study, net precipitation (precipitation minus sublimation) for the Antarctic continent is computed for 1980-1994 using operational numerical analyses obtained from the ECMW...

Wavelet analysis is now a method of well recognized effectiveness in a range of disciplines, including atmospheric science e.g., 39 publications from NCAR from [10] to [11]. Our recent research includes applying a wavelet-based criterion to identify coherent structures in turbulence simulations, §2.1. Also, as detailed in recent reports [6 §1; 7; 8 & op. cit. therein], a need is well known and ...

Weekly cycles of meteorological parameters have been found in many regions around the world; however, the phase and magnitude of these cycles vary greatly from regions and seasons. Based on the NCEP/DOE reanalysis data and the daily surface station observation data from 1980 to 2009 in Beijing and surrounding areas, the weekend effect of aerosol concentration, precipitation and several other me...

[1] The air sea interaction processes over the Indian Ocean are studied using the satellite data from the Tropical Rainfall Measuring Mission Satellite for two contrasting monsoon years, namely 2002 (deficit) and 2003 (normal). The moisture transport for the two contrasting years was also analyzed using the NCEP/NCAR reanalysis data. Linear correlation coefficient between the convective heating...

The two objectives of natural ventilation in buildings are the improvement of indoor air quality and thermal comfort. The methodology proposed hereafter provides an assessment of the natural ventilation potential for indoor air quality, while taking into consideration the other objective. More precisely, requirements on comfort impose the appropriate ventilation strategies to be applied for eac...

The spatial and temporal distributions of sea surface temperature (SST) anomalies in the Antarctic Circumpolar Current (ACC) are investigated, using monthly data from the NCEP–NCAR reanalysis for the period 1980–2004. Patterns of atmospheric forcing are identified in observations of sea level pressure and air–sea heat fluxes. It is found that a significant fraction of SST variability in the ACC...