Titre de série : |
Monthly weather review, 4 |
Titre : |
Use of the gamma distribution in single-cloud : rainfall analysis |
Type de document : |
texte imprimé |
Auteurs : |
Simpson, J. |
Année de publication : |
1972 |
ISBN/ISSN/EAN : |
CI-09273 |
Note générale : |
This study is based on the radar-evaluated rainfall data from 52 south Florida cumulus clouds, 26 seeded and 26 control clouds, selected by a randomization procedure. The fourth root of the rainfall for both seeded and control populations was well fitted by a gamma distribution for probability density. The gamma distribution is prescribed by two parameters, one for scale and one for shape. Since the coefficient of variation of seeded and control cloud populations was the same, the shape parameters for the two gamma distribution were the same, while the seeded population's scale parameters was such as to shift the distribution to higher rainfall values than the control distribution. |
Langues : |
Anglais (eng) |
Mots-clés : |
PRECIPITATIONS Pluviométrie Modèle mathématique Fonction gamma Coefficient de variation |
Index. décimale : |
551.57 Hydrométéorologie : brouillard, nuages, précipitations |
Résumé : |
This study is based on the radar-evaluated rainfall data from 52 south Florida cumulus clouds, 26 seeded and 26 control clouds, selected by a randomization procedure. The fourth root of the rainfall for both seeded and control populations was well fitted by a gamma distribution for probability density. The gamma distribution is prescribed by two parameters, one for scale and one for shape. Since the coefficient of variation of seeded and control cloud populations was the same, the shape parameters for the two gamma distribution were the same, while the seeded population's scale parameters was such as to shift the distribution to higher rainfall values than the control distribution. |
Note de contenu : |
This study is based on the radar-evaluated rainfall data from 52 south Florida cumulus clouds, 26 seeded and 26 control clouds, selected by a randomization procedure. The fourth root of the rainfall for both seeded and control populations was well fitted by a gamma distribution for probability density. The gamma distribution is prescribed by two parameters, one for scale and one for shape. Since the coefficient of variation of seeded and control cloud populations was the same, the shape parameters for the two gamma distribution were the same, while the seeded population's scale parameters was such as to shift the distribution to higher rainfall values than the control distribution. |
Monthly weather review, 4. Use of the gamma distribution in single-cloud : rainfall analysis [texte imprimé] / Simpson, J. . - 1972. ISSN : CI-09273 This study is based on the radar-evaluated rainfall data from 52 south Florida cumulus clouds, 26 seeded and 26 control clouds, selected by a randomization procedure. The fourth root of the rainfall for both seeded and control populations was well fitted by a gamma distribution for probability density. The gamma distribution is prescribed by two parameters, one for scale and one for shape. Since the coefficient of variation of seeded and control cloud populations was the same, the shape parameters for the two gamma distribution were the same, while the seeded population's scale parameters was such as to shift the distribution to higher rainfall values than the control distribution. Langues : Anglais ( eng)
Mots-clés : |
PRECIPITATIONS Pluviométrie Modèle mathématique Fonction gamma Coefficient de variation |
Index. décimale : |
551.57 Hydrométéorologie : brouillard, nuages, précipitations |
Résumé : |
This study is based on the radar-evaluated rainfall data from 52 south Florida cumulus clouds, 26 seeded and 26 control clouds, selected by a randomization procedure. The fourth root of the rainfall for both seeded and control populations was well fitted by a gamma distribution for probability density. The gamma distribution is prescribed by two parameters, one for scale and one for shape. Since the coefficient of variation of seeded and control cloud populations was the same, the shape parameters for the two gamma distribution were the same, while the seeded population's scale parameters was such as to shift the distribution to higher rainfall values than the control distribution. |
Note de contenu : |
This study is based on the radar-evaluated rainfall data from 52 south Florida cumulus clouds, 26 seeded and 26 control clouds, selected by a randomization procedure. The fourth root of the rainfall for both seeded and control populations was well fitted by a gamma distribution for probability density. The gamma distribution is prescribed by two parameters, one for scale and one for shape. Since the coefficient of variation of seeded and control cloud populations was the same, the shape parameters for the two gamma distribution were the same, while the seeded population's scale parameters was such as to shift the distribution to higher rainfall values than the control distribution. |
| ![Use of the gamma distribution in single-cloud : rainfall analysis vignette](./images/vide.png) |