Selection of Climate Station Data Using Clustering and Triangulated Irregular Network Techniques

1993 ◽  
Author(s):  
Kevin R. Slocum
Keyword(s):  
Triangulated Irregular Network ◽  
Station Data ◽  
Climate Station ◽  
Selection Of

scholarly journals TubeDB: An on-demand processing database system for climate station data

2021 ◽  
Vol 146 ◽  
pp. 104641
Author(s):  
Stephan Wöllauer ◽  
Dirk Zeuss ◽  
Falk Hänsel ◽  
Thomas Nauss
Keyword(s):  
Database System ◽  
On Demand ◽  
Station Data ◽  
Climate Station

Modelling soil temperature in forest clearcuts using climate station data

1985 ◽  
Vol 36 (2) ◽  
pp. 153-164 ◽  
Author(s):  
R.J. Stathers ◽  
T.A. Black ◽  
M.D. Novak
Keyword(s):  
Soil Temperature ◽  
Station Data ◽  
Climate Station

scholarly journals Base Point Split Algorithm for Generating Polygon Skeleton Lines on the Example of Lakes

2020 ◽  
Vol 9 (11) ◽  
pp. 680
Author(s):  
Elżbieta Lewandowicz ◽  
Paweł Flisek
Keyword(s):  
Base Point ◽  
Vector Data ◽  
Triangulated Irregular Network ◽  
Base Points ◽  
Complex Polygon ◽  
Selection Of

This article presents the Base Point Split (BPSplit) algorithm to generate a complex polygon skeleton based on sets of vector data describing lakes and rivers. A key feature of the BPSplit algorithm is that it is dependent on base points representing the source or mouth of a river or a stream. The input values of base points determine the shape of the resulting skeleton of complex polygons. Various skeletons can be generated with the use of different base points. Base points are applied to divide complex polygon boundaries into segments. Segmentation supports the selection of triangulated irregular network (TIN) edges inside complex polygons. The midpoints of the selected TIN edges constitute a basis for generating a skeleton. The algorithm handles complex polygons with numerous holes, and it accounts for all holes. This article proposes a method for modifying a complex skeleton with numerous holes. In the discussed approach, skeleton edges that do not meet the preset criteria (e.g., that the skeleton is to be located between holes in the center of the polygon) are automatically removed. An algorithm for smoothing zigzag lines was proposed.

scholarly journals Guidance on the homogenization of climate station data

2018 ◽  
Author(s):  
Victor Venema ◽  
Blair Trewin ◽  
Xiaolan Wang ◽  
Tamás Szentimrey ◽  
Monika Lakatos ◽  
...  
Keyword(s):  
Station Data ◽  
Climate Station

scholarly journals Selection of the Optimal Smart Meter to Act as a Data Concentrator with the Use of Graph Theory

Entropy ◽  
2021 ◽  
Vol 23 (6) ◽  
pp. 658
Author(s):  
Piotr Kiedrowski
Keyword(s):  
Graph Theory ◽  
Information Transmission ◽  
Smart Grids ◽  
Smart Meter ◽  
Adequate Level ◽  
Station Data ◽  
Optimum Selection ◽  
Communication Module ◽  
The Common ◽  
Selection Of

Changing the construction of mart Meter (SM) devices, more specifically equipping them with more than one communication module, facilitates the elimination of a Transformer Station Data Concentrator (TSC) module, moving its function to one of the SMs. The opportunity to equip a chosen device in an additional communication module makes it possible to use it as an acquisition node. The introduction of this solution creates a problem with the optimum selection of the above-mentioned node out of all the nodes of the analyzed network. This paper suggests the criterion of its location and, as per the criterion, the way of conduct using the elements of the graph theory. The discussion is illustrated with the examples of the possibility to use the method for the optimization of the architecture of the network. The described method makes it possible to choose the location of a backup acquisition node as well as locate intermediary nodes (signal repeaters) in case of a failure (removal) of some SM devices. In the era of the common introduction of dispersed telemetric systems requiring an adequate level of performance and reliability of information transmission, the offered method can be used for the optimization of the structures of Smart Grids.

scholarly journals Expanding HadISD: quality-controlled, sub-daily station data from 1931

2015 ◽  
Vol 11 (5) ◽  
pp. 4569-4600 ◽  
Author(s):  
R. J. H. Dunn ◽  
K. M. Willett ◽  
D. E. Parker ◽  
L. Mitchell
Keyword(s):  
Quality Control ◽  
Wind Speed ◽  
Time Range ◽  
Underlying Structure ◽  
Control Procedure ◽  
Quality Control Procedure ◽  
Station Data ◽  
Temporal Coverage ◽  
Over Time ◽  
Selection Of

Abstract. We describe the first major update to the sub-daily station-based HadISD dataset. The temporal coverage of the dataset has been extended to 1931 to present, doubling the time range over which data are provided. Improvements made to the station selection and merging procedures result in 8113 stations being provided in version 2.0.0.2014f of this dataset. This station selection will be reassessed at every annual update, which is likely to result in increasing station numbers over time. The selection of stations to merge together making composites has also been improved and made more robust. The underlying structure of the quality control procedure is the same as for HadISD.1.0.x, but a number of improvements have been implemented in individual tests. Also, more detailed quality control tests for wind speed and direction have been added. The data will be made available as netCDF files at www.metoffice.gov.uk/hadobs/hadisd and updated annually.

scholarly journals Random trend errors in climate station data due to inhomogeneities

2019 ◽  
Vol 40 (4) ◽  
pp. 2393-2402 ◽  
Author(s):  
Ralf Lindau ◽  
Victor Venema
Keyword(s):  
Station Data ◽  
Climate Station

Cognitive gadgets and cognitive priors

2019 ◽  
Vol 42 ◽  
Author(s):  
Gian Domenico Iannetti ◽  
Giorgio Vallortigara
Keyword(s):  
Cognitive Neuroscience ◽  
Selection Of

Abstract Some of the foundations of Heyes’ radical reasoning seem to be based on a fractional selection of available evidence. Using an ethological perspective, we argue against Heyes’ rapid dismissal of innate cognitive instincts. Heyes’ use of fMRI studies of literacy to claim that culture assembles pieces of mental technology seems an example of incorrect reverse inferences and overlap theories pervasive in cognitive neuroscience.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

Measurements of the Cape Astrometric Survey of the Southern Hemisphere

1978 ◽  
Vol 48 ◽  
pp. 515-521
Author(s):  
W. Nicholson
Keyword(s):  
Southern Hemisphere ◽  
Automatic Measuring ◽  
Measuring Machine ◽  
Final Selection ◽  
Selection Of

SummaryA routine has been developed for the processing of the 5820 plates of the survey. The plates are measured on the automatic measuring machine, GALAXY, and the measures are subsequently processed by computer, to edit and then refer them to the SAO catalogue. A start has been made on measuring the plates, but the final selection of stars to be made is still a matter for discussion.

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