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