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SWATq^Å
@Aá'xÿ HRU^ f T 1 n f f f
HP H = ∑ (HX k+ 1,i -HX )(HX k+ 1,i -
k+ 1
k+ 1
@Zz=O}¶, /Ì8=OY: n-1 i= 1
t HX ) T (5)
f
0 ∑
SW =SW + (R -Q surf,i -E -W seep,i -Q ) k+1
t
gw,i
i
i
f
T
f
T
i= 1 K k+1 =P H (HP H +R ) -1 (6)
k+1
k + 1
k + 1
(1) a f f
X =X +K [(Y +v )-HX ]
k+1 k+1 k+1 k+1 k+1 k+1
¹¢:SW ?Ë t ç¯
â^p|Ý@Z,mm;SW 0 ( v ~N(0,R )) (7)
t
k+1
k+1
?²Np|Ý@Z,mm;R ?Ë i ç^v£@Z, ¹¢:n ?SBUZ,°ù;X f
k+1,i ? k+1 â¿Ë i
i
mm;Q surf,i ?Ë i ç^ÁïdZ,mm;E ?Ë i ç
i
f
SBUZ,°^SB[cÆ;X ? k+1 â¿S
k+ 1
^CZ,mm;W seep,i ?Ë i ç^xZW|¢d,
BUZ,°5Æ;H?8Û, ïUZK
mm;Q gw,i ?Ë i ç^Á@dZ,mm。
SBUZ^|W;K ? k+1 â¿^àÁE"
k+1
vd Q ÜË i ç^Áïd Q surf,i |¢d
、
i
H`;R k+1 ? k+1â¿^¢k^=kH`;
Q lat,i WÁ@d Q gw,i x¨:
v ?5Æ? 0、 =k? R k+1 ^X·ORw;Y ?
k+1
k+1
Q =Q +Q +Q (2)
i surf,i lat,i gw,i
k+1 â¿^UZÆ,°。
v HRUJ8^vdÛdeéZL®,, h
2.5 ¸z{|}9
}Øn®v, ÄhÈëÎÌ8d。
EnKS ´ EnKF ^S~, »=p4ßÈy
2.4 ¸z{|}~
^ÞÍKq·kSØUZÆ,°Kq
,°àÁÞ'x MonteCarlo =pW
rSBUZ,°, $ôî EnKF¹kXSBU
àÁÞ¹Û.Ìlqr¢^SBWû
Z。EnKF =p? EnKS âßÈx 1ç^
ù [10] 。EnKF ·?[cWkXè7。
nÙÚ。
[c7î¢, ²NVô^ k â¿SBUZ
²NV²³UZ,°ô,SWATqÔ¶
,°ÝØqr, ¥å k+1 â¿^SBUZ[Æ:
4ßȱ®â¿, 9¤ßÈyéÿSBUZq
X f ~N(0,Q))
k,i
k
k + 1,i =M(X , θ ,u)+ω k ( ω k k Æ, I+S~^SBUZ X¨©4ßÈyéÿ L
( 3)
SBÆ x, /µï?:
¹¢:X f X=[xx… x] T (8)
k + 1,i ? k+1 â¿Ë i SBUZ,°^SB
1 2
L
[cÆ;M(·) ?lqr8Û;X ? k â¿Ë {¬Á, S~^>Z,° Y¨©âã=s
k,i
i ²³UZ,°; θ?qrûù;u ? k â¿^° ·¸^éÿ mÆ, ?:
k
Øù×>Z; ω k ?5Æ? 0、 =k? Q ^X·OR Y=[yy… y] T (9)
k
1 2 m
w;Q ?qr¢k^=kH`。 ôc EnKF¹Ì8àÁE"H`, o
k
'xqrSB[cÆ9¥qrSB[c^= qrSBUZ}¶kX。
kH`ô, qrSBUZ^[cÆ'xFk 2.6 JK¿S
X, /¹Y: ?.qr[K¾Æ^djOZ, gS
n
1 f f f
f
T
P H = ∑ (X -X )(HX - à. Wù (Nash-Sutcliffeefficiencycoefficient,
k+1 k+1,i k+1 k+1,i
n-1 i= 1
NSE)、 5=5¢k(rootmeansquareerror,RMSE)
f
HX ) T (4) »>.qrq. [21] 。/¢,NSE hioq
k+ 1