气象统计分析与预报经验正交函数分解Word格式文档下载.docx
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2)计算协方差矩阵
3)用Jacobi方法或迭代法计算协方差矩阵的特征值与特征向量
4)将特征值从大到小排列
5)计算特征向量的时间系数
6)计算每个特征向量的方差贡献
7)结果输出
3.2编写程序
要求编写主程序,其中包括资料读入,范围截取,子程序调用。
注意:
EOF的资料输入,时间场一维,空间场一维。
*********************(附程序,对关键部分标志出)**********************
EOF程序
C**********************************************************************
C*
CPROGRAMNOTES*
CTHISPROGRAMUSESEOFTOANALYSISTIMESERIES*
COFMETEOROLOGICALFIELD*
C********ParameterTable**********
CMt===>
LENTHOFTIMESERIES*
CN===>
NUMBEROFGRID-POINTS(orSTATIONS)*
CKS=-1,SELF;
KS=0,DEPATURE;
KS=1,STANDERDLIZEDDEPATURE*
CKV=NUMBEROFEIGENVALUESWILLBEOUTPUT*
CKVT=NUMBEROFEIGENVECTORSANDTIMESERIESWILLBEOUTPUT*
CMNH=Minimum(Mt,N)*
CEGVT===>
EIGENVECTORS,ECOF===>
TIMECOEFFICIENTSFOREGVT*
CER(KV,1)====>
LAMDA;
LAMDA===>
EIGENVALUE*
CER(KV,2)====>
ACCUMULATELAMDA*
CER(KV,3)====>
THESUMOFCOMPONENTSVECTORSPROJECTEDONTO*
CEIGENVACTOR.*
CER(KV,4)====>
ACCUMULATEER(KV,3)*
PARAMETER(N=73*37,MT=58,MNH=58)
PARAMETER(KS=1,KV=10,KVT=10)
REALF(N,MT),AVF(N),DF(N),ER(MNH,4)
REALA(MNH,MNH),S(MNH,MNH),V(MNH)
c**************************************************************************
cINFN-输入数据文件名;
OUTERA-输出特征值及方差贡献、累积方差贡献的文件名(文本);
cOUTTC1-输出时间系数文件(文本);
OUTTC2-输出时间系数文件(二进制);
cOUTTEVT-输出特征向量文件(二进制);
c**************************************************************************
CHARACTER*50INFN,OUTERA,OUTTC1,OUTTC2,OUTEVT
DATAINFN/'
hgt8501948-2005july.grd'
/
DATAOUTERA/'
hgt_XT03ER3.DAT'
DATAOUTTC1/'
hgt_XT03TC13.DAT'
DATAOUTTC2/'
hgt_XT03TC23.DAT'
DATAOUTEVT/'
hgt_XT03VT3.DAT'
C----------------ReadORIGINALDATA----------------------------
write(*,*)'
Nowisreadingprimativefield!
'
OPEN(8,FILE=INFN,FORM='
UNFORMATTED'
ACCESS='
DIRECT'
RECL=N)
DOIT=1,MT
READ(8,REC=IT)(F(IS,IT),IS=1,N)
ENDDO
pause
C**************STARTTORUNEOFPROGRAM******************************
WRITE(*,*)
FIRSTSTEP'
formingtheinitialmatrix(F)byusingTRANSF!
CALLTRANSF(N,Mt,F,AVF,DF,KS)
STEP2'
achivingthecovariancematrixbyusingtheFORMA!
CALLFORMA(N,Mt,MNH,F,A)
STEP3'
caculatingtheeigenvalueandeigenvectors'
WRITE(*,*)'
byusingJacobmethod!
CALLJCB(MNH,A,S,0.001)
STEP4'
arrangetheeigenvalueandeigenvectors'
byusingARRANG!
CALLARRANG(MNH,A,ER,S)
STEP5'
thecaculationofstandardeigenvectors'
byusingTCOEFF!
CALLTCOEFF(KVT,N,Mt,MNH,S,F,V,ER)
write(*,*)
STEP6'
outputingeigenvalueandaccumulationusingOUTER!
CALLOUTER(MNH,ER,OUTERA)
WRITE(*,*)
STEP7'
outputingthetimecoefficientoftheeigenvecters!
CALLOUTVT1(KVT,N,Mt,MNH,S,F,OUTTC1,OUTTC2)
STEP8'
outputingtheeigenvecters!
CALLOUTVT3(KVT,N,Mt,MNH,S,F,OUTEVT)
END
C***************FINISHTHEMAINPROGRAM*****************************
C*
CSUBROUTINEFUNCTION*
CTHISSUBROUTINEPRINTSARRAYER*
CER(KV,1)FORSEQUENCEOFEIGENVALUEFROMBIGTOSMALL*
CER(KV,2)FOREIGENVALUEFROMBIGTOSMALL*
CER(KV,3)FORSMALLLO=(LAMDA/TOTALVARIANCE)*
CER(KV,4)FORBIGLO=SUMOFSMALLLO)*
C*********************************************************************
C--------SAVINGTHEEIGENVALUEANDERROR---------------------------*
SUBROUTINEOUTER(MNH,ER,OUTERA)
DIMENSIONER(MNH,4)
CHARACTER*50OUTERA
open(30,file=OUTERA)
WRITE(30,510)
WRITE(30,520)
WRITE(30,530)(IS,(ER(IS,J),J=1,4),IS=1,MNH)
CLOSE(30)
510FORMAT(25X,'
EIGENVALUEANDANALYSISERROR'
)
520FORMAT(5X,'
N'
8X,'
LAMDA'
10X,'
SLAMDA'
11X,'
PH'
12X,'
SPH'
530FORMAT(I6,2E15.6,2F15.5)
RETURN
CTHISSUBROUTINEPRINTSSTANDARDEIGENVECTORS*
CANDITSTIME-COEFFICENTSERIES*
C-------------savetime-coeffivcentseriedofS.E.------------
SUBROUTINEOUTVT1(KVT,N,M,MNH,S,F,OUTTC1,OUTTC2)
DIMENSIONF(N,M),S(MNH,MNH)
CHARACTER*50OUTTC1,OUTTC2
OPEN(31,file=OUTTC1)
OPEN(32,file=OUTTC2,FORM='
RECL=KVT)
WRITE(31,400)
WRITE(31,200)(IS,IS=1,KVT)
DOJ=1,M
IF(M.GE.N)THEN
WRITE(31,300)J,(F(IS,J),IS=1,KVT)
WRITE(32,REC=J)(F(IS,J),IS=1,KVT)
ELSE
WRITE(31,300)J,(S(J,IS),IS=1,KVT)
WRITE(32,REC=J)(s(J,IS),IS=1,KVT)
ENDIF
ENDDO
CLOSE(31)
200FORMAT(3X,10I15)
300FORMAT(I5,10E15.7)
400FORMAT(30X,'
TIME-COEFFICENTSERIESOFS.E.'
C---------savestandardeignvectors------------------
SUBROUTINEOUTVT3(KVT,N,M,MNH,S,F,OUTEVT)
CHARACTER*50OUTEVT
OPEN(33,file=OUTEVT,FORM='
DOJS=1,KVT
WRITE(33,REC=JS)(S(I,JS),I=1,N)
WRITE(33,REC=JS)(F(I,JS),I=1,N)
CLOSE(33)
C***********************************************************************
CTHISSUBROUTINEPROVIDESINITIALFBYKS(optionalparameter)*
Cks=-1,0,or1accordingtoprimativefield*
SUBROUTINETRANSF(N,M,F,AVF,DF,KS)
REALF(N,M),AVF(N),DF(N)
IF(KS)30,10,10
10DOI=1,N
AVF(I)=0.0
DF(I)=0.0
DOI=1,N
AVF(I)=AVF(I)+F(I,J)
AVF(I)=AVF(I)/M
F(I,J)=F(I,J)-AVF(I)
IF(KS.EQ.1)THEN
DF(I)=DF(I)+F(I,J)*F(I,J)
DF(I)=SQRT(DF(I)/M)
F(I,J)=F(I,J)/DF(I)
ENDIF
30CONTINUE
C-----------------FORMA-----------------------------
SUBROUTINEFORMA(N,M,MNH,F,A)
REALF(N,M),A(MNH,MNH)
IF(M-N)40,50,50
40DOI=1,MNH
DOJ=1,I
A(I,J)=0.0
DOIS=1,N
A(I,J)=A(I,J)+F(IS,I)*F(IS,J)
A(J,I)=A(I,J)
50DOI=1,MNH
DOJS=1,M
A(I,J)=A(I,J)+F(I,JS)*F(J,JS)
c***********************************************************************
CTHISSUBROUTINECOMPUTSEIGENVALUESANDEIGENVECTORSOFA*
SUBROUTINEJCB(N,A,S,EPS)
DIMENSIONA(N,N),S(N,N)
DOJ=1,N
IF(I.EQ.J)THEN
S(I,J)=1.0
S(I,J)=0.0
G=0.0
DOI=2,N
I1=I-1
DOJ=1,I1
G=G+2.*A(I,J)*A(I,J)
S1=SQRT(G)
S2=EPS/FLOAT(N)*S1
S3=S1
L=0
50S3=S3/FLOAT(N)
60DO130IQ=2,N
IQ1=IQ-1
DO130IP=1,IQ1
IF(ABS(A(IP,IQ)).LT.S3)GOTO130
L=1
V1=A(IP,IP)
V2=A(IP,IQ)
V3=A(IQ,IQ)
U=0.5*(V1-V3)
IF(U.EQ.0.0)G=1.
IF(ABS(U).GE.1E-10)G=-SIGN(1.,U)*V2/SQRT(V2*V2+U*U)
ST=G/SQRT(2.*(1.+SQRT(1.-G*G)))
CT=SQRT(1.-ST*ST)
G=A(I,IP)*CT-A(I,IQ)*ST
A(I,IQ)=A(I,IP)*ST+A(I,IQ)*CT
A(I,IP)=G
G=S(I,IP)*CT-S(I,IQ)*ST
S(I,IQ)=S(I,IP)*ST+S(I,IQ)*CT
S(I,IP)=G
A(IP,I)=A(I,IP)
A(IQ,I)=A(I,IQ)
G=2.*V2*ST*CT
A(IP,IP)=V1*CT*CT+V3*ST*ST-G
A(IQ,IQ)=V1*ST*ST+V3*CT*CT+G
A(IP,IQ)=(V1-V3)*ST*CT+V2*(CT*CT-ST*ST)
A(IQ,IP)=A(IP,IQ)
130CONTINUE
IF(L-1)150,140,150
140L=0
GOTO60
150IF(S3.GT.S2)GOTO50
c**********************************************************************
CTHISSUBROUTINEPROVIDESASERIESOFEIGENVALUES*
CFROMMAXTOMIN*
SUBROUTINEARRANG(MNH,A,ER,S)
DIMENSIONA(MNH,MNH),ER(MNH,4),S(MNH,MNH)
TR=0.0
DOI=1,MNH
TR=TR+A(I,I)
ER(I,1)=A(I,I)
MNH1=MNH-1
DOK1=MNH1,1,-1
DOK2=K1,MNH1
IF(ER(K2,1).LT.ER(K2+1,1))THEN
C=ER(K2+1,1)
ER(K2+1,1)=ER(K2,1)
ER(K2,1)=C
C=S(I,K2+1)
S(I,K2+1)=S(I,K2)
S(I,K2)=C
ER(1,2)=ER(1,1)
DOI=2,MNH
ER(I,2)=ER(I-1,2)+ER(I,1)
ER(I,3)=ER(I,1)/TR
ER(I,4)=ER(I,2)/TR
CTHISSUBROUTINEPROVIDESSTANDARDEIGENVECTORS*
C(M.GE.N,SAVEDINS;
M.LT.N,SAVEDINF)ANDITSTIMECOEFFICENTS*
CSERIES(M.GE.N,SAVEDINF;
M.LT.N,SAVEDINS)*
SUBROUTINETCOEFF(KVT,N,M,MNH,S,F,V,ER)
DIMENSIONS(MNH,MNH),F(N,M),V(MNH),ER(MNH,4)
DOJ=1,MNH
C=0.0
C=C+S(I,J)*S(I,J)
C=SQRT(C)
DOI=1,M