def test_non_parcel_bunkers_motion(): correct = [ 10.532915762684453, -7.863859696750608, 20.924864405622614, 19.379065415942257 ] returned = winds.non_parcel_bunkers_motion(prof) npt.assert_almost_equal(returned, correct)
def bunkers_storm_motion(prof, pbot=None, **kwargs): ''' Compute the Bunkers Storm Motion for a Right Moving Supercell using a parcel based approach. Inputs ------ prof (profile object) Profile Object pbot (float) Base of effective-inflow layer (hPa) Returns ------- rstu (float) Right Storm Motion U-component rstv (float) Right Storm Motion V-component lstu (float) Left Storm Motion U-component lstv (float) Left Storm Motion V-component ''' d = MS2KTS(7.5) # Deviation value emperically derived as 7.5 m/s # If MUPCL provided, use it, otherwise create MUPCL if 'mupcl' in kwargs: mupcl = kwargs.get('mupcl') else: mulplvals = params.DefineParcel(3, prof, pres=400) mupcl = params.parcelx(-1, -1, mulplvals.pres, mulplvals.temp, mulplvals.dwpt, prof, lplvals=mulplvals) mucape = mupcl.bplus mucinh = mupcl.bminus muel = mupcl.elhght if not pbot: pbot, ptop = effective_inflow_layer(100, -250, prof) base = interp.agl(interp.hght(pbot, prof), prof) if mucape > 100. and QC(muel) and base >= 750: depth = muel - base htop = base + depth / 2. ptop = interp.pres(interp.msl(base + htop, prof), prof) mnu, mnv = winds.mean_wind_npw(pbot, ptop, prof) sru, srv = winds.wind_shear(pbot, ptop, prof) srmag = vector.mag(sru, srv) uchg = d / srmag * srv vchg = d / srmag * sru rstu = mnu + uchg rstv = mnv - vchg lstu = mnu - uchg lstv = mnv + vchg else: rstu, rstv, lstu, lstv = winds.non_parcel_bunkers_motion(prof) return rstu, rstv, lstu, lstv
def get_kinematics(self): ''' Function to generate the numerous kinematic quantities used for display and calculations. It requires that the parcel calculations have already been called for the lcl to el shear and mean wind vectors, as well as indices that require an effective inflow layer. Parameters ---------- None Returns ------- None ''' sfc = self.pres[self.sfc] heights = np.array([1000., 3000., 4000., 5000., 6000., 8000., 9000.]) p1km, p3km, p4km, p5km, p6km, p8km, p9km = interp.pres( self, interp.to_msl(self, heights)) ## 1km and 6km winds self.wind1km = interp.vec(self, p1km) self.wind6km = interp.vec(self, p6km) ## calcluate wind shear self.sfc_1km_shear = winds.wind_shear(self, pbot=sfc, ptop=p1km) self.sfc_3km_shear = winds.wind_shear(self, pbot=sfc, ptop=p3km) self.sfc_6km_shear = winds.wind_shear(self, pbot=sfc, ptop=p6km) self.sfc_8km_shear = winds.wind_shear(self, pbot=sfc, ptop=p8km) self.sfc_9km_shear = winds.wind_shear(self, pbot=sfc, ptop=p9km) self.lcl_el_shear = winds.wind_shear(self, pbot=self.mupcl.lclpres, ptop=self.mupcl.elpres) ## calculate mean wind self.mean_1km = utils.comp2vec( *winds.mean_wind(self, pbot=sfc, ptop=p1km)) self.mean_3km = utils.comp2vec( *winds.mean_wind(self, pbot=sfc, ptop=p3km)) self.mean_6km = utils.comp2vec( *winds.mean_wind(self, pbot=sfc, ptop=p6km)) self.mean_8km = utils.comp2vec( *winds.mean_wind(self, pbot=sfc, ptop=p8km)) self.mean_lcl_el = utils.comp2vec(*winds.mean_wind( self, pbot=self.mupcl.lclpres, ptop=self.mupcl.elpres)) ## parameters that depend on the presence of an effective inflow layer if self.etop is ma.masked or self.ebottom is ma.masked: self.etopm = ma.masked self.ebotm = ma.masked self.srwind = winds.non_parcel_bunkers_motion(self) self.eff_shear = [MISSING, MISSING] self.ebwd = [MISSING, MISSING, MISSING] self.ebwspd = MISSING self.mean_eff = [MISSING, MISSING, MISSING] self.mean_ebw = [MISSING, MISSING, MISSING] self.srw_eff = [MISSING, MISSING, MISSING] self.srw_ebw = [MISSING, MISSING, MISSING] self.right_esrh = [ma.masked, ma.masked, ma.masked] self.left_esrh = [ma.masked, ma.masked, ma.masked] self.critical_angle = ma.masked else: self.srwind = params.bunkers_storm_motion(self, mupcl=self.mupcl, pbot=self.ebottom) depth = (self.mupcl.elhght - self.ebotm) / 2 elh = interp.pres(self, interp.to_msl(self, self.ebotm + depth)) ## calculate mean wind self.mean_eff = winds.mean_wind(self, self.ebottom, self.etop) self.mean_ebw = winds.mean_wind(self, pbot=self.ebottom, ptop=elh) ## calculate wind shear of the effective layer self.eff_shear = winds.wind_shear(self, pbot=self.ebottom, ptop=self.etop) self.ebwd = winds.wind_shear(self, pbot=self.ebottom, ptop=elh) self.ebwspd = utils.mag(self.ebwd[0], self.ebwd[1]) ## calculate the mean sr wind self.srw_eff = winds.sr_wind(self, pbot=self.ebottom, ptop=self.etop, stu=self.srwind[0], stv=self.srwind[1]) self.srw_ebw = winds.sr_wind(self, pbot=self.ebottom, ptop=elh, stu=self.srwind[0], stv=self.srwind[1]) self.right_esrh = winds.helicity(self, self.ebotm, self.etopm, stu=self.srwind[0], stv=self.srwind[1]) self.left_esrh = winds.helicity(self, self.ebotm, self.etopm, stu=self.srwind[2], stv=self.srwind[3]) self.critical_angle = winds.critical_angle(self, stu=self.srwind[0], stv=self.srwind[1]) ## calculate mean srw self.srw_1km = utils.comp2vec(*winds.sr_wind( self, pbot=sfc, ptop=p1km, stu=self.srwind[0], stv=self.srwind[1])) self.srw_3km = utils.comp2vec(*winds.sr_wind( self, pbot=sfc, ptop=p3km, stu=self.srwind[0], stv=self.srwind[1])) self.srw_6km = utils.comp2vec(*winds.sr_wind( self, pbot=sfc, ptop=p6km, stu=self.srwind[0], stv=self.srwind[1])) self.srw_8km = utils.comp2vec(*winds.sr_wind( self, pbot=sfc, ptop=p8km, stu=self.srwind[0], stv=self.srwind[1])) self.srw_4_5km = utils.comp2vec(*winds.sr_wind( self, pbot=p4km, ptop=p5km, stu=self.srwind[0], stv=self.srwind[1])) self.srw_lcl_el = utils.comp2vec( *winds.sr_wind(self, pbot=self.mupcl.lclpres, ptop=self.mupcl.elpres, stu=self.srwind[0], stv=self.srwind[1])) # This is for the red, blue, and purple bars that appear on the SR Winds vs. Height plot self.srw_0_2km = winds.sr_wind(self, pbot=sfc, ptop=interp.pres( self, interp.to_msl(self, 2000.)), stu=self.srwind[0], stv=self.srwind[1]) self.srw_4_6km = winds.sr_wind(self, pbot=interp.pres( self, interp.to_msl(self, 4000.)), ptop=p6km, stu=self.srwind[0], stv=self.srwind[1]) self.srw_9_11km = winds.sr_wind( self, pbot=interp.pres(self, interp.to_msl(self, 9000.)), ptop=interp.pres(self, interp.to_msl(self, 11000.)), stu=self.srwind[0], stv=self.srwind[1]) ## calculate upshear and downshear self.upshear_downshear = winds.mbe_vectors(self) self.srh1km = winds.helicity(self, 0, 1000., stu=self.srwind[0], stv=self.srwind[1]) self.srh3km = winds.helicity(self, 0, 3000., stu=self.srwind[0], stv=self.srwind[1])
''' Create the Sounding (Profile) Object '''
def get_kinematics(self): ''' Function to generate the numerous kinematic quantities used for display and calculations. It requires that the parcel calculations have already been called for the lcl to el shear and mean wind vectors, as well as indices that require an effective inflow layer. Parameters ---------- None Returns ------- None ''' sfc = self.pres[self.sfc] heights = np.array([1000., 3000., 4000., 5000., 6000., 8000., 9000.]) p1km, p3km, p4km, p5km, p6km, p8km, p9km = interp.pres(self, interp.to_msl(self, heights)) ## 1km and 6km winds self.wind1km = interp.vec(self, p1km) self.wind6km = interp.vec(self, p6km) ## calcluate wind shear self.sfc_1km_shear = winds.wind_shear(self, pbot=sfc, ptop=p1km) self.sfc_3km_shear = winds.wind_shear(self, pbot=sfc, ptop=p3km) self.sfc_6km_shear = winds.wind_shear(self, pbot=sfc, ptop=p6km) self.sfc_8km_shear = winds.wind_shear(self, pbot=sfc, ptop=p8km) self.sfc_9km_shear = winds.wind_shear(self, pbot=sfc, ptop=p9km) self.lcl_el_shear = winds.wind_shear(self, pbot=self.mupcl.lclpres, ptop=self.mupcl.elpres) ## calculate mean wind self.mean_1km = utils.comp2vec(*winds.mean_wind(self, pbot=sfc, ptop=p1km)) self.mean_3km = utils.comp2vec(*winds.mean_wind(self, pbot=sfc, ptop=p3km)) self.mean_6km = utils.comp2vec(*winds.mean_wind(self, pbot=sfc, ptop=p6km)) self.mean_8km = utils.comp2vec(*winds.mean_wind(self, pbot=sfc, ptop=p8km)) self.mean_lcl_el = utils.comp2vec(*winds.mean_wind(self, pbot=self.mupcl.lclpres, ptop=self.mupcl.elpres)) ## parameters that depend on the presence of an effective inflow layer if self.etop is ma.masked or self.ebottom is ma.masked: self.etopm = ma.masked; self.ebotm = ma.masked self.srwind = winds.non_parcel_bunkers_motion( self ) self.eff_shear = [MISSING, MISSING] self.ebwd = [MISSING, MISSING, MISSING] self.ebwspd = MISSING self.mean_eff = [MISSING, MISSING, MISSING] self.mean_ebw = [MISSING, MISSING, MISSING] self.srw_eff = [MISSING, MISSING, MISSING] self.srw_ebw = [MISSING, MISSING, MISSING] self.right_esrh = [ma.masked, ma.masked, ma.masked] self.left_esrh = [ma.masked, ma.masked, ma.masked] self.critical_angle = ma.masked else: self.srwind = params.bunkers_storm_motion(self, mupcl=self.mupcl, pbot=self.ebottom) depth = ( self.mupcl.elhght - self.ebotm ) / 2 elh = interp.pres(self, interp.to_msl(self, self.ebotm + depth)) ## calculate mean wind self.mean_eff = winds.mean_wind(self, self.ebottom, self.etop ) self.mean_ebw = winds.mean_wind(self, pbot=self.ebottom, ptop=elh ) ## calculate wind shear of the effective layer self.eff_shear = winds.wind_shear(self, pbot=self.ebottom, ptop=self.etop) self.ebwd = winds.wind_shear(self, pbot=self.ebottom, ptop=elh) self.ebwspd = utils.mag( self.ebwd[0], self.ebwd[1] ) ## calculate the mean sr wind self.srw_eff = winds.sr_wind(self, pbot=self.ebottom, ptop=self.etop, stu=self.srwind[0], stv=self.srwind[1] ) self.srw_ebw = winds.sr_wind(self, pbot=self.ebottom, ptop=elh, stu=self.srwind[0], stv=self.srwind[1] ) self.right_esrh = winds.helicity(self, self.ebotm, self.etopm, stu=self.srwind[0], stv=self.srwind[1]) self.left_esrh = winds.helicity(self, self.ebotm, self.etopm, stu=self.srwind[2], stv=self.srwind[3]) self.critical_angle = winds.critical_angle(self, stu=self.srwind[0], stv=self.srwind[1]) ## calculate mean srw self.srw_1km = utils.comp2vec(*winds.sr_wind(self, pbot=sfc, ptop=p1km, stu=self.srwind[0], stv=self.srwind[1] )) self.srw_3km = utils.comp2vec(*winds.sr_wind(self, pbot=sfc, ptop=p3km, stu=self.srwind[0], stv=self.srwind[1] )) self.srw_6km = utils.comp2vec(*winds.sr_wind(self, pbot=sfc, ptop=p6km, stu=self.srwind[0], stv=self.srwind[1] )) self.srw_8km = utils.comp2vec(*winds.sr_wind(self, pbot=sfc, ptop=p8km, stu=self.srwind[0], stv=self.srwind[1] )) self.srw_4_5km = utils.comp2vec(*winds.sr_wind(self, pbot=p4km, ptop=p5km, stu=self.srwind[0], stv=self.srwind[1] )) self.srw_lcl_el = utils.comp2vec(*winds.sr_wind(self, pbot=self.mupcl.lclpres, ptop=self.mupcl.elpres, stu=self.srwind[0], stv=self.srwind[1] )) # This is for the red, blue, and purple bars that appear on the SR Winds vs. Height plot self.srw_0_2km = winds.sr_wind(self, pbot=sfc, ptop=interp.pres(self, interp.to_msl(self, 2000.)), stu=self.srwind[0], stv=self.srwind[1]) self.srw_4_6km = winds.sr_wind(self, pbot=interp.pres(self, interp.to_msl(self, 4000.)), ptop=p6km, stu=self.srwind[0], stv=self.srwind[1]) self.srw_9_11km = winds.sr_wind(self, pbot=interp.pres(self, interp.to_msl(self, 9000.)), ptop=interp.pres(self, interp.to_msl(self, 11000.)), stu=self.srwind[0], stv=self.srwind[1]) ## calculate upshear and downshear self.upshear_downshear = winds.mbe_vectors(self) self.srh1km = winds.helicity(self, 0, 1000., stu=self.srwind[0], stv=self.srwind[1]) self.srh3km = winds.helicity(self, 0, 3000., stu=self.srwind[0], stv=self.srwind[1])
def test_non_parcel_bunkers_motion(): correct = [10.532915762684453, -7.863859696750608, 20.924864405622614, 19.379065415942257] returned = winds.non_parcel_bunkers_motion(prof) npt.assert_almost_equal(returned, correct)