Accuracy Evaluation of Standardized Precipitation Index (SPI) Estimation under Conventional Assumption in Yeşilırmak, Kızılırmak, and Konya Closed Basins, Turkey
Table 4
Theoretical distribution models most approximately fitting the rainfall data of 3-month and 12-month for the sites.
Rainfall station
Dist.
PEA
Dist.
PEA
3-month
12-month
Samsun
P III
ML
N
ML
Merzifon
W
ML
LN 3
ML
Corum
W
LM
P III
ML
Amasya
W
LM
LN 3
M
Tokat
W
LM
W
M
Zile
W
LM
GAM
LM
Sebinkarahisar
W
M
LOG
ML
Turhal
W
LM
LOG
ML
Susehri
W
LM
N
ML
Kastamonu
LN 2
LM
LN 2
ML
Cankiri
P III
M
N
ML
Sivas
P III
M
N
LM
Kirikkale
W
LM
LOG
ML
Yozgat
W
LM
GAM
ML
Kırsehir
W
M
GAM
M
Gemerek
W
LM
LOG
LM
Nevsehir
W
LM
GAM
LM
Kayseri
W
LM
LOG
LM
Bafra
P III
ML
LN 2
ML
Ilgaz
W
LM
W
M
Tosya
GEV
M
W
LM
Osmancik
P III
ML
W
M
Zara
W
M
LOG
LM
Keskin
W
LM
LN 3
ML
Cicekdagi
W
LM
EV I
M
Kaman
W
M
W
M
Bogazliyan
GEV
LM
LOG
ML
Urgup
W
LM
W
LM
Develi
LN 3
ML
GLOG
ML
Konya
P III
ML
W
LM
Karaman
P III
ML
P III
ML
Eregli
W
M
W
M
Nigde
W
LM
LN 3
ML
Kulu
W
LM
GEV
M
Seydişehir
GAM
ML
GLOG
ML
Cumra
W
M
W
M
Karapinar
W
LM
LN 2
LM
Aksaray
W
LM
GEV
M
Abbreviations of distributions used in this study: W: Weibull; P III: Pearson Type III; GEV: Generalized Extreme Value; GAM: Gamma; LN2: two-parameter Lognormal, LN3: three-parameter Lognormal; N: Normal; LOG: Logistic; GLOG: Generalized Logistic; EVI: Extreme Value Type1.
