A Rapid Procedure for Inverting Del-Square with Certain Computers
1976; American Meteorological Society; Volume: 104; Issue: 7 Linguagem: Inglês
10.1175/1520-0493(1976)104 2.0.co;2
ISSN1520-0493
Autores Tópico(s)Soil Moisture and Remote Sensing
ResumoA rapid procedure for inverting a second-order finite-difference form of the two-dimensional del-square operator is presented. The procedure may be used whenever the precision of the computer significantly exceeds the required accuracy of the results; effectively it acquires its speed by using the otherwise unneeded power of the computer represented by the additional precision. A particular variant should prove especially useful in numerical weather prediction, in instances when storage space is at a premium.
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