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!Environment Canada - Atmospheric Science and Technology License/Disclaimer,
!                     version 3; Last Modified: May 7, 2008.
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!

      subroutine pasqrt(pinput,poutput,kdimin,kdimout) 9
#if defined (DOC)
*
***s/r pasqrt
*
*Author  : M. Buehner July, 2002
*Revision:
*
*    -------------------
**    Purpose:
*
*     Calculate:  poutput = sqrt(Pa) * pinput
*     Note: assumes HesEval already modified for sqrt(Pa)
*
*Arguments
*    -NONE-
#endif
      IMPLICIT NONE
*implicits
#include "comdim.cdk"
#include "comlun.cdk"
#include "comcva.cdk"
#include "comanl.cdk"
c
      integer kdimin,kdimout
      REAL*8 PINPUT(kdimin),POUTPUT(kdimout)
      REAL*8 ZSHORT(nprecon),ZOUTPUT(kdimout)
      INTEGER JJ,RR,ILEN,IERR
c
      write(NULOUT,*) '***MULTIPLYING BY SQRT OF Panl***'
c
c New (simpler) way of calculating sqrt(Pa) * pin
c
      DO RR=1,NPRECON
        ZSHORT(RR) = 0.0d0
      ENDDO
      DO JJ=1,NVADIM
        ZOUTPUT(JJ)=0.0d0
      ENDDO
c
      DO RR=1,NPRECON
        DO JJ=1,NVADIM
          ZSHORT(RR)=ZSHORT(RR) + RRNK1(JJ,RR)*PINPUT(JJ)
        ENDDO
      ENDDO
c
      DO RR=1,NPRECON
        ZSHORT(RR)=ZSHORT(RR)*HesEval(RR)
      ENDDO
c
      DO JJ=1,NVADIM
        DO RR=1,NPRECON
          ZOUTPUT(JJ)= ZOUTPUT(JJ) + RRNK1(JJ,RR)*ZSHORT(RR)
        ENDDO
      ENDDO
c
      DO JJ=1,NVADIM
        POUTPUT(JJ)= PINPUT(JJ) + ZOUTPUT(JJ)
      ENDDO
c
      RETURN
      END