module stpdwmod !$$$ module documentation block ! . . . . ! module: stpdwmod module for stpdw and its tangent linear stpdw_tl ! prgmmr: ! ! abstract: module for stpdw and its tangent linear stpdw_tl ! ! program history log: ! 2005-05-18 Yanqiu zhu - wrap stpdw and its tangent linear stpdw_tl into one module ! 2005-11-16 Derber - remove interfaces ! 2008-12-02 Todling - remove stpdw_tl ! 2009-08-12 lueken - updated documentation ! ! subroutines included: ! sub stpdw ! ! attributes: ! language: f90 ! machine: ! !$$$ end documentation block implicit none PRIVATE PUBLIC stpdw contains subroutine stpdw(dwhead,ru,rv,su,sv,out,sges,nstep) !$$$ subprogram documentation block ! . . . . ! subprogram: stpdw calculate contribution to penalty and ! stepsize from dw, with nonlinear qc added. ! prgmmr: derber org: np23 date: 1991-02-26 ! ! abstract: calculate contribution to penalty and stepsize from lidar winds ! ! program history log: ! 1991-02-26 derber ! 1999-11-22 yang ! 2004-07-29 treadon - add only to module use, add intent in/out ! 2004-10-07 parrish - add nonlinear qc option ! 2005-04-11 treadon - merge stpdw and stpdw_qc into single routine ! 2005-08-02 derber - modify for variational qc parameters for each ob ! 2005-09-28 derber - consolidate location and weight arrays ! 2007-03-19 tremolet - binning of observations ! 2007-07-28 derber - modify to use new inner loop obs data structure ! - unify NL qc ! 2007-02-15 rancic - add foto ! 2007-06-04 derber - use quad precision to get reproducability over number of processors ! 2008-04-11 safford - rm unused vars ! 2008-12-03 todling - changed handling of ptr%time ! 2010-01-04 zhang,b - bug fix: accumulate penalty for multiple obs bins ! ! input argument list: ! dwhead ! ru - search direction for u ! rv - search direction for v ! su - current analysis increment for u ! sv - current analysis increment for v ! sges - step size estimates (4) ! nstep- number of step sizes (== 0 means use outer iteration values) ! ! output argument list: ! out(1:nstep) - penalty contribution from lidar winds sges(1:nstep) ! ! attributes: ! language: f90 ! machine: ibm RS/6000 SP ! !$$$ use kinds, only: r_kind,i_kind,r_quad use obsmod, only: dw_ob_type use qcmod, only: nlnqc_iter,varqc_iter use constants, only: half,one,two,tiny_r_kind,cg_term,zero_quad,r3600 use gridmod, only: latlon1n use jfunc, only: l_foto,xhat_dt,dhat_dt implicit none ! Declare passed variables type(dw_ob_type),pointer ,intent(in ) :: dwhead integer(i_kind) ,intent(in ) :: nstep real(r_quad),dimension(max(1,nstep)),intent(inout) :: out real(r_kind),dimension(latlon1n) ,intent(in ) :: ru,rv,su,sv real(r_kind),dimension(max(1,nstep)),intent(in ) :: sges ! Declare local variables integer(i_kind) j1,j2,j3,j4,j5,j6,j7,j8,kk real(r_kind) valdw,facdw,w1,w2,w3,w4,w5,w6,w7,w8 real(r_kind) time_dw,pg_dw,dw real(r_kind),dimension(max(1,nstep))::pen real(r_kind) cg_dw,wgross,wnotgross type(dw_ob_type), pointer :: dwptr out=zero_quad dwptr => dwhead do while (associated(dwptr)) if(dwptr%luse)then if(nstep > 0)then j1=dwptr%ij(1) j2=dwptr%ij(2) j3=dwptr%ij(3) j4=dwptr%ij(4) j5=dwptr%ij(5) j6=dwptr%ij(6) j7=dwptr%ij(7) j8=dwptr%ij(8) w1=dwptr%wij(1) w2=dwptr%wij(2) w3=dwptr%wij(3) w4=dwptr%wij(4) w5=dwptr%wij(5) w6=dwptr%wij(6) w7=dwptr%wij(7) w8=dwptr%wij(8) valdw=(w1* ru(j1)+w2* ru(j2)+w3* ru(j3)+w4* ru(j4)+& w5* ru(j5)+w6* ru(j6)+w7* ru(j7)+w8* ru(j8))*dwptr%sinazm+& (w1* rv(j1)+w2* rv(j2)+w3* rv(j3)+w4* rv(j4)+& w5* rv(j5)+w6* rv(j6)+w7* rv(j7)+w8* rv(j8))*dwptr%cosazm facdw=(w1* su(j1)+w2* su(j2)+w3* su(j3)+w4* su(j4)+& w5* su(j5)+w6* su(j6)+w7* su(j7)+w8* su(j8))*dwptr%sinazm+& (w1* sv(j1)+w2* sv(j2)+w3* sv(j3)+w4* sv(j4)+& w5* sv(j5)+w6* sv(j6)+w7* sv(j7)+w8* sv(j8))*dwptr%cosazm-& dwptr%res if(l_foto) then time_dw=dwptr%time*r3600 valdw=valdw+((w1*dhat_dt%u(j1)+w2*dhat_dt%u(j2)+ & w3*dhat_dt%u(j3)+w4*dhat_dt%u(j4)+& w5*dhat_dt%u(j5)+w6*dhat_dt%u(j6)+ & w7*dhat_dt%u(j7)+w8*dhat_dt%u(j8))*dwptr%sinazm+& (w1*dhat_dt%v(j1)+w2*dhat_dt%v(j2)+ & w3*dhat_dt%v(j3)+w4*dhat_dt%v(j4)+& w5*dhat_dt%v(j5)+w6*dhat_dt%v(j6)+ & w7*dhat_dt%v(j7)+w8*dhat_dt%v(j8))*dwptr%cosazm)*time_dw facdw=facdw+((w1*xhat_dt%u(j1)+w2*xhat_dt%u(j2)+ & w3*xhat_dt%u(j3)+w4*xhat_dt%u(j4)+& w5*xhat_dt%u(j5)+w6*xhat_dt%u(j6)+ & w7*xhat_dt%u(j7)+w8*xhat_dt%u(j8))*dwptr%sinazm+& (w1*xhat_dt%v(j1)+w2*xhat_dt%v(j2)+ & w3*xhat_dt%v(j3)+w4*xhat_dt%v(j4)+& w5*xhat_dt%v(j5)+w6*xhat_dt%v(j6)+ & w7*xhat_dt%v(j7)+w8*xhat_dt%v(j8))*dwptr%cosazm)*time_dw end if do kk=1,nstep dw=facdw+sges(kk)*valdw pen(kk)=dw*dw*dwptr%err2 end do else pen(1)=dwptr%res*dwptr%res*dwptr%err2 end if ! Modify penalty term if nonlinear QC if (nlnqc_iter .and. dwptr%pg > tiny_r_kind .and. dwptr%b > tiny_r_kind) then pg_dw=dwptr%pg*varqc_iter cg_dw=cg_term/dwptr%b wnotgross= one-pg_dw wgross = pg_dw*cg_dw/wnotgross do kk=1,max(1,nstep) pen(kk)= -two*log((exp(-half*pen(kk)) + wgross)/(one+wgross)) end do endif out(1) = out(1)+pen(1)*dwptr%raterr2 do kk=2,nstep out(kk) = out(kk)+(pen(kk)-pen(1))*dwptr%raterr2 end do end if dwptr => dwptr%llpoint end do return end subroutine stpdw end module stpdwmod