## Forecasting thunderstorms over a 2- to 5-hour period by statistical methods, Volume 2934Joseph Allen Zak, United States. National Aeronautics and Space Administration. Scientific and Technical Information Office, George C. Marshall Space Flight Center, Texas A & M University National Aeronautics and Space Administration, Scientific and Technical Information Office, 1977 - Nature - 112 pages |

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### Contents

STATISTICAL APPROACH | 10 |

Plot of residuals versus predicted values from regression | 18 |

Data and regression analysis for l0 observations | 27 |

16 other sections not shown

### Common terms and phrases

atmosphere binary candidate predictors Charba chosen contingency tables correlated data subdivisions dependent Developmental Developmental Developmental discussed eigenvalues eigenvectors equivalent potential temperature error estimated F-statistic geopotential height grid points included independent sample independent variables instability intense convection interval Laplacian linear combination manually digitized radar MDIV MDR code MDRP mean square measure mesoscale moisture divergence multicollinearity National Weather Service no-thunderstorm nonoccurrence north wind occurrence frequency occurrence of thunderstorms parameterization Partitioning sums postagreement percentages predicted probabilities predicted values prefigurance and postagreement principal component analysis problem radar data random sample regression analysis regression model south wind squall line statistical stepwise procedure storms subsets sum of squares surface wind synoptic synoptic-scale Test Test Test thunderstorm occurrence tion total variance trigger mechanism Upper air l200 upper-air upper-air data upper-air observations upper-air parameters variable selection techniques vertical motion VIP3 wind component wind shear Yes No Yes zero