arome_wmed for hymex
DESCRIPTION
AROME_WMED for HyMeX. M.Nuret, N. Fourrié, E. Bresson, C. Jany, P. Brousseau, A. Doerenbecher and colleagues Météo-France / CNRM-GAME. AROME_WMED. AROME_WMED = special version of the operational model AROME_France for the HyMeX field campaign . non hydrostatic, 2.5km resolution - PowerPoint PPT PresentationTRANSCRIPT
AROME_WMED for HyMeX
M.Nuret, N. Fourrié, E. Bresson,
C. Jany, P. Brousseau, A. Doerenbecher
and colleagues
Météo-France / CNRM-GAME
AROME_WMED
AROME_WMED = special versionof the operational model AROME_Francefor the HyMeX field campaign.
• non hydrostatic, 2.5km resolution• assimilation cycle = 3h• boundary conditions = ARPEGE global model
AROME_WMED (periods)
AWM_OPER X (+48h) X(+48h) X(+48h)
AWM_REANA_1 X(+54h)
AWM_REANA_2 X(+54h) ?* ?*
SOP1(5/9/2012-6/11/2012)
Inter-SOP SOP2(1/2/2013-15/3/2013)
+ AROME_France oper. (+30hr)
* if extra manpower available
AROME_WMED (cycles)
AWM_OPER 36t2/37t125/09/2012
03UTC06UTC
37t1 37t1
AWM_REANA_1 37t1
AWM_REANA_2 38t1
SOP1(5/9/2012-6/11/2012)
Inter-SOP SOP2(1/2/2013-15/3/2013)
• OPER : Jb_1• REANA1 : Jb_1• REANA2 : Jb_2
Jb_1: computed on a convective case from autumn 2010, ensemble method, 6 perturbed members (36t2)
Jb_2: to be computed on a period from SOP1 (autumn 2012),ensemble method, to be defined …
AROME_WMED_oper (Jb)
AROME_WMED_oper (Jb)Variance-covariance matrix of the guess error (= forecast range +3hr) = Jb
• 1000hpa~10km
• 500 hPa~15km
From:Fourrié et al.,
AROME_WMED (coupling)
• OPER : ARPEGE court cy36t2 then cy37t1• REANA1 : ARPEGE production cy36t2 then cy37t1• REANA2 : ARPEGE production cy36t2 then cy37t1
Impact of the coupling is under investigation ( court vs production)
AROME_WMED_oper (relief)
• Orography difference AWM_oper – AROME_FRANCE average 27.56m (- 0.16°C for T2m)(relief AWM_oper = relief ½ envelop)
relief AWM_reana1 = relief AWM_oper
AROME_WMED_oper (observations)
• AWM_oper vs AROME_France:• basically, the same incoming observation flux • GPS more (+) data vs pré-HYMEX period, but less (–) datain AWM_oper vs AROME_France (bias correction scheme issue)• BAMED balloons (V and T)• RS/4M supplementary HYMEX (since mid-October, BUFR/ASCII issue) in TEMP format• RS KIT (Corse) all taken into account (TEMP format) • Wind Profiler: for SOP1 available from mid october (only Pierrelattetaken into account, then 5 sites for SOP2 after monitoring)
Specific to AWM_oper (vs AROME_France):• Spanish surface data: more SYNOP• Polar orbiting radiances (AMSU): thinning improved (125km => 80km)
AROME_WMED_oper (observations)
• AWM_oper vs AROME_France: nombre d’observations (messages)
AROME_WMED_oper: evaluation• AWM_oper :
• real time suite on NEC (TORI, old computer, computation nodes failures, constraints..) with real time monitoring• AROME_WMED +48h forecasts on 00UTC slot available~ 04.30UTC => forecast bulletin ~ 07.00UTC• many technical issues:
• real time archiving issues• cycle change• too much radar observations (5/11/2012)• observation extraction
95% of the forecats on time (SOP1), 93% (SOP2)
AROME_WMED_oper: evaluationT2m
HU2m
Tb IR
Wind(gust)
SOP1
AROME_WMED_oper: evaluation
SOP1 SOP2
Rain
AROME_WMED_oper: evaluationIOP8 28/09-00UTC to 29/09-00UTC 29/09-00UTC to 30/09-00UTC
OBS
+24hr
+48hr
AROME_WMED_oper: conclusion
• AROME_WMED_oper performance is at least similar toAROME_France, even better for some IOPs (8, 15b) concerning rain
• weak cold 2m temperature bias (orography difference)
• GPS bias correction issue
• AROME_WMED oper and reana1 simulations available on the HyMeX database
AROME_WMED_reana1• AWM_rena1 vs AWM_oper:
=> observations• observations re-extracted (no cut-off constraint)• + spanish SYNOPs [5/9/2012 – 4/10/2012]• Hu from balloon BAMED• + wind profiler (only Pierrelatte was assimilated in oper. for SOP1):Pierrelatte+Cld-Ferrand+Candillargues+Perpignan+Marignanne,availability on GTS mid October.• RS/4M before 10 October 2012 in TEMP format
=> configuration • unique cycle (37t1)• forecast maximum range :+54h• coupling: ARPEGE production• period: SOP1
AROME_WMED_reana1• BAMED balloon: ~ 400 observations (Hu)•Wind profiler: +64% • Radiosonde: +4%• Synop: +2%
QPF: impact>0 1st period, neutral 2nd period: is cycle changethe dominant effect?
SOP1
AROME_WMED_reana1Pm
er(H
pa)
Échéance(h) Échéance(h)
Hum
idité
(%)
FF(m
/s)
Échéance(h)
DD
(°)
Échéance(h)
T2m
(°)
Échéance(h)Échéance(h)
Néb
ulos
ité(%
)
AROME_WMED_REANA1 vs AROME_WMED_OPER(validation against surface data = SYNOP)
=> neutral impact
AROME_WMED_reana1AROME_WMED_REANA1 vs AROME_WMED_OPER
(validation against surface data = buoy)
neutral impact
From Rainaud R. et al.: « Air-sea exchanges over the Western Mediterranean Sea during the HyMeX SOP1 using the AROME-WMED model », submitted to QJRMS, May 2014.
AROME_WMED_reana1
Échéance(h)
AROME_WMED_REANA1 vs AROME_WMED_OPER(validation against upper-air data = RS)
=> neutral impact
Eqm Ect |Biais|
Pres
sion
(hP a
)
Géopotential Température
Humidité Wind Speed
AROME_WMED_reana1AROME_WMED_REANA1 vs AROME_WMED_OPER
(validation against integrated data = IWV GPS)
=> positive impactHumidity
Échéance(h)Réseau (UTC)
IWV
(mm
)
Cor
réla
tion
IWV IWV
Réseau validationGPS
AROME_WMED_reana1AROME_WMED_REANA1 vs AROME_WMED_OPER
(validation against upper air data = F20 dropsondes)
=> weak positive impact
Réseau (UTC)
Validation networkdropsondes F20
(35 dropsondes, ~4000 données)C
orré
lati
onM
odèl
e-ob
serv
atio
n(%
)
AROME_WMED_reana1: conclusion
• overall quality of AROME_WMED_oper and AROME_WMED_reana1 is similar
• more data, but no significative improvement, except maybe a weak signal in QPF during the 1st period (before 25/09/2012) – maybe as a result of the conjunction of more data and cycle upgrade
AROME_WMED_reana2• new 38t1cycle on new machine BULL (oper. since 14/01/2014)
• doppler winds from Mt Maurel, more SEVIRI radiances over land,more IASI channels, σo tuned, orography, …
• new orography (same as AROME_France oper. which is new in cy38)• new Jb• enhanced observations flux vs AROME_WMED_reana1:
high resolution radiosounding (France, Espagne, RS/4M,KIT, L’Aquilla, Biscarosse)dropsondes F20reprocessed GPS and biais correction scheme adaptedreprocessed wind profilersground-based lidar (Candillargues, Minorque) + airborneresearch aircraft measurements (F20, ATR, Dornier)spanish radarsurface stations (Candillargues, …)…
LIDAR BASIL
Quality control issues …
AROME_WMED_reana2Work in progress:
• AROME_WMED cy38 run with Jb_1 and AROME_WMED_reana1observational dataset for SOP1 (« control » run)• evaluation of the coupling strategy • preparation of the observations files, tests
Expected agenda:• Jb_2 : june 2014• Tests : summer / autumn 2014• Availability : mid-2015 (M45)
AROME_WMED_reana2
• Questions, comments?
CY38