{"id":35,"date":"2023-06-13T17:18:08","date_gmt":"2023-06-13T17:18:08","guid":{"rendered":"https:\/\/itwg.ssec.wisc.edu\/nwp\/?page_id=35"},"modified":"2023-06-13T17:18:09","modified_gmt":"2023-06-13T17:18:09","slug":"itsc19-nwp-survey","status":"publish","type":"page","link":"https:\/\/itwg.ssec.wisc.edu\/nwp\/itsc19-nwp-survey\/","title":{"rendered":"ITSC19 NWP Survey"},"content":{"rendered":"\n

Please send updates or corrections to the NWP WG co-chairs.<\/strong>\u00a0<\/p>\n\n\n\n

   Table 1    Overview <\/a><\/h2>\n\n\n\n
Institute<\/td>Data Assimilation System<\/td><\/td>Radiative Transfer Model<\/td>ATOVS assimilated<\/td><\/td><\/td>Bias Correction Scheme<\/td>Status
(applies to all tables)<\/td><\/tr>
Global<\/td>Regional or Km Scale<\/td>Radiances<\/td>Retrievals<\/td>RARS<\/td><\/td><\/td><\/td><\/td><\/tr>
\/\/EC\/\/<\/a>
\/\/(Canada)\/\/<\/a><\/td>		4DVAR & EnKF<\/td>3DVAR<\/td>RTTOV8.7<\/td>YES<\/td>NO<\/td>NO<\/td>Off-line<\/td>\/\/\/\/<\/a> 1 January 2012<\/td><\/tr>
\/\/ECMWF\/\/<\/a>
(Europe)<\/strong><\/em><\/td>		Hybrid 4DVAR\/Ens<\/strong><\/em><\/td><\/td>RTTOV10.1<\/strong><\/em><\/td>YES<\/em><\/strong><\/td>NO<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>VAR<\/em><\/strong><\/td>7March 2014<\/em><\/strong><\/td><\/tr>
met.no<\/strong>
(Norway)<\/td>		<\/td>3DVAR<\/td>RTTOV7<\/td>YES<\/td>NO<\/td>YES<\/td>Off-line<\/td>1 January 2012<\/td><\/tr>
US-FNMOC\/NRL
(USA)<\/em><\/strong><\/td>		4DVAR<\/em><\/strong><\/td>3DVAR<\/em><\/strong><\/td>CRTM<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>YES(RD)<\/em><\/strong><\/td>YES<\/td>Off-line<\/em><\/strong><\/td>1 January 2012<\/strong><\/em><\/td><\/tr>
\/\/DWD\/\/<\/a>
(Germany)<\/td>		3DVAR<\/td>nudging<\/td>RTTOV7<\/td>YES<\/td>NO<\/td>YES<\/td>Off-line<\/td>\/\/\/\/<\/a> 1 January 2012<\/td><\/tr>
\/\/Met Office\/\/<\/a>
(UK)<\/em><\/strong><\/td>		Hybrid 4DVAR\/Ens<\/em><\/strong><\/td>4DVAR<\/em><\/strong><\/td>RTTOV7<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>NO<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>Off-line<\/em><\/strong><\/td>\/\/\/\/<\/a> 1 January 2012<\/em><\/strong><\/td><\/tr>
DMI
(Denmark)<\/td>		<\/td>3DVAR<\/td>RTTOV8.5<\/td>YES<\/td>NO<\/td>YES<\/td>Off-line<\/td>1 March 2010<\/td><\/tr>
\/\/JMA\/\/<\/a>
(Japan)<\/em><\/strong><\/td>		4DVAR<\/em><\/strong><\/td>4DVAR<\/em><\/strong><\/td>RTTOV9.3<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>NO<\/td>YES<\/em><\/strong><\/td>VAR<\/em><\/strong><\/td>1<\/strong><\/em> January 2012<\/strong><\/em><\/td><\/tr>
\/\/Meteo France\/\/<\/a>
(France)<\/td>		4DVAR+Ens<\/td>3DVAR<\/td>RTTOV9.2<\/td>YES<\/td>NO<\/td>YES<\/td>VAR<\/td>\/\/\/\/<\/a> 1 January 2012<\/td><\/tr>
\/\/NCEP\/\/<\/a>
(USA)<\/em><\/strong><\/td>		3DVAR<\/em><\/strong><\/td>3DVAR<\/em><\/strong><\/td>CRTM<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>NO<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>VAR<\/em><\/strong><\/td>1 January 2012<\/strong><\/em><\/td><\/tr>
BoM
(Australia)<\/td>		4DVAR<\/td>4DVAR<\/td>RTTOV7<\/td>YES<\/td>NO<\/td>NO<\/td>Off-line<\/td>1 January 2012<\/td><\/tr>
CPTEC\/INPE
(Brazil)<\/em><\/strong><\/td>		3DVAR<\/td>3DVAR<\/td>N\/A<\/em><\/strong><\/td>NO<\/em><\/strong><\/td>YES<\/em><\/strong><\/td>N\/A<\/em><\/strong><\/td>N\/A<\/em><\/strong><\/td>1 January 2012<\/strong><\/em><\/td><\/tr>
\/\/OMSZ\/\/<\/a>
(Hungary)<\/td>		<\/td>3DVAR<\/td>RTTOV8.5<\/td>YES<\/td>NO<\/td>YES<\/td>VAR<\/td>1 January 2012<\/td><\/tr>
 SMHI
(Sweden)<\/strong><\/em><\/td>		 <\/strong><\/em><\/td> 4DVAR<\/strong><\/em><\/td> RTTOV7<\/strong><\/em><\/td> YES<\/strong><\/em><\/td>NO<\/strong><\/em><\/td>NO<\/strong><\/em><\/td> Off-line<\/strong><\/em><\/td> 1 January 2012<\/strong><\/em><\/td><\/tr>
 CNMCA
(Italy)<\/td>		 <\/td> LETKF<\/td> RTTOV10.2<\/td> YES<\/td>NO (monitoring)<\/td>YES<\/td> Off-line<\/td> 1 January 2012<\/td><\/tr>
 KMA
(Korea)<\/strong><\/em><\/td>		4DVAR<\/strong><\/em><\/td>4DVAR<\/strong><\/em><\/td>RTTOV7<\/strong><\/em><\/td>YES<\/strong><\/em><\/td>NO<\/strong><\/em><\/td>YES<\/strong><\/em><\/td>Off-line<\/strong><\/em><\/td> 1 January 2012<\/strong><\/em><\/td><\/tr>
 NCMRWF
(India)<\/td>		3DVAR<\/td> <\/td>CRTM<\/td>YES<\/td>NO<\/td>NO<\/td>VAR<\/td> 1 January 2012<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

G<\/strong>\u00a0global
R<\/strong>\u00a0regional
GD<\/strong>\u00a0global deterministic
RD<\/strong>\u00a0regional deterministic
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Table prepared by ITWG\/NWP WG\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0
<\/strong><\/p>\n\n\n\n

   Table 2     NWP Systems and Use of ATOVS<\/a><\/h2>\n\n\n\n
Institute<\/td>Global<\/td><\/td>Regional<\/td><\/td>Data assimilation<\/td>Radiative transfer model<\/td>ATOVS radiance assim (level)<\/td>ATOVS retrievals<\/td>RARS<\/td><\/tr>
Deterministic<\/td>Ensemble<\/td>Deterministic<\/td>Ensemble<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/tr>
EC
 (Canada)<\/strong><\/td>		35 km L80 (10d)<\/td>66 km L40 (20m) (16d)<\/td>15 km L80 (2d)
2.5 km L58<\/td>		35 km L28 (3d)<\/td>GD: 4D-Var T108 L80
GE: EnKF 100 km  L58 (192m)
RD: 3DVAR T200 L80<\/td>		RTTOV 8.7<\/td>Level 1b preprocessed to 1c with AAPP<\/td>NO<\/td>NO<\/td><\/tr>
ECMWF (Europe)<\/strong><\/td>T1279 L137 (10d)<\/td>T639 up to 10d, T319 d10-15, L62, 51m<\/td><\/td><\/td>4D-Var T1279 L137 with T255 final inner loop<\/td>RTTOV 10.1<\/td>Level 1c (after antenna pattern correction)<\/td>NO<\/td>EARS, AP-RARS<\/td><\/tr>
met.no (Norway)<\/strong><\/td><\/td><\/td>8km L60 (2.75d),
12 km L60<\/td>		<\/td>3D-Var<\/td>RTTOV 7<\/td>Level 1c<\/td>NO<\/td>EARS<\/td><\/tr>
FNMOC\/NRL (USA)<\/strong><\/td>T319 L42 (7.5d)<\/td>T119 L30, 24m, 10d<\/td><\/td><\/td>GD: 4D-Var-AR T119 L42
GE: 4D-Var-AR T119 L30
RD: 3D-Var 27\/9\/3 km<\/td>		CRTM<\/td>level 1b processed to level 1c with AAPP<\/td>Yes (RD)<\/td>YES<\/td><\/tr>
DWD
(Germany)<\/strong><\/td>		20 km L60 (7d)<\/td><\/td>7 km L40
2.8 km L50<\/td>		2.8 km, 20m, 21h<\/td>GD: 3D-Var
RD: nudging<\/td>		RTTOV 7<\/td>Level 1b<\/td>NO<\/td>YES (G)<\/td><\/tr>
Met Office
(UK)<\/strong><\/td>		25 km L70 (6d)<\/td>60 km L70, 24m, 3d<\/td>12 km L70
1.5 km L70<\/td>		18 km, 24m, 2d<\/td>GD: 4D-Var 60 km L70
RD 12 km: 4D-Var 24 km
RD 1.5 km:
3D-Var + Latent Heat nudging 1.5 km<\/td>		RTTTOV 7<\/td>Level 1b\/1c<\/td>NO<\/td>EARS AP-RARS SA-RARS<\/td><\/tr>
DMI
(Denmark)<\/strong><\/td>		<\/td><\/td>0.15 deg (16 km) L40 0.09 deg (10 km)
L40 0.03 deg (3.3 km)
L40 0.05 deg (5.6 km) L40<\/td>		<\/td>3D-VAR 0.15 deg L40
3D-Var 0.09 deg L40
3D-Var 0.09 deg L40
Inceremental<\/td>		RTTOV 8.5<\/td>Level 1c from AAPP<\/td>NO<\/td>EARS<\/td><\/tr>
JMA (Japan)<\/strong><\/td>T959 L60<\/td>T319 L60 (51m) (9d)<\/td>5 km L50<\/td>T319 L60, 11m, 5d<\/td>GD: 4D-Var T319 L60
RD: 4D-Var 15 km<\/td>		RTTOV 9.3<\/td>Level 1c<\/td>NO<\/td>EARS, AP-RARS, SP-RARS<\/td><\/tr>
M\u00e9t\u00e9o France (France)<\/strong><\/td>T798C2.4 L70 (4d)<\/td>T538C2.4 L65 (35m)<\/td>2.5 km L60<\/td>25 km (35m) (4d)<\/td>GD: 4D-Var+ensemble T323C1 L70
RD: 3D-Var 2.5 km<\/td>		 
RTTOV 9.2<\/td>		level 1c<\/td>NO<\/td>EARS, AP-RARS<\/td><\/tr>
NCEP
(USA)<\/strong><\/td>		T574 L64 (7.5d)
T190 L64 (16d)<\/td>		T254L42, 84m, 1-8d
T190L42, 84m, 8-16d<\/td>		12 km L60
4 km L50<\/td>		16 km L35 (21m) (3.6d)<\/td>GD: 3D-Var T574 L64
RD: 3D-Var 12 km<\/td>		CRTM<\/td>Level 1b<\/td>NO<\/td>Yes (G)<\/td><\/tr>
BoM
(Australia)<\/strong><\/td>		80 km L50 (10d)<\/td><\/td>37.5 km L50<\/td><\/td>GD: 4D-Var 100 km L50
RD: 4D-Var 75 km L50<\/td>		RTTOV 7<\/td>Level 1d from AAPP Met Office<\/td>NO<\/td>NO<\/td><\/tr>
CPTEC\/INPE (Brazil)<\/strong><\/td>45 km L64 (7d)<\/td>100 km L28, 40m, 15d<\/td>15 km L50<\/td>20 km, 21m,  10d<\/td>GD: 3D-Var 40 km
RD: 3D-Var 15 km<\/td>		CRTM<\/td>YES<\/td>NO<\/td>YES<\/td><\/tr>
OMSZ (Hungary)<\/strong><\/td><\/td><\/td>8 km L49 (2.25d)
2.5 km L60 (2d)<\/td>		8 km (11m) L49 (2d)<\/td>RD: 3D-Var 8 km L49
RD: 3D-Var 2.5 km L60<\/td>		RTTOV 8.5<\/td>Level 1c<\/td>NO<\/td>EARS<\/td><\/tr>
 SMHI
(Sweden)<\/strong><\/td>		 <\/td> <\/td> 10 km L60<\/td> <\/td> 4D-Var<\/td> RTTOV7<\/td> YES<\/td> NO<\/td> EARS<\/td><\/tr>
 CNMCA
(Italy)<\/strong><\/td>		 <\/td> <\/td>7 km L40
2.8 km L50<\/td>		 <\/td>R: LETKF 10 km<\/td> RTTOV9.2<\/td> Level 1c<\/td> NO<\/td>EARS<\/td><\/tr>
 KMA
(Korea)<\/strong><\/td>		 25 km L70, 10.5d<\/td> 40 km L70, 10d<\/td> 12 km L70
1.5 km L70<\/td>		 <\/td> G: 4D-Var 75 km L70
R 12 km: 4D-Var 36 km L70
R 1.5 km: 3D-Var + FGAT<\/td>		 RTTOV7<\/td> Level 1d from AAPP from Met Office<\/td> NO<\/td> EARS, AP-RARS, SA-RARS<\/td><\/tr>
 NCMRWF (India)<\/strong><\/td>T574L64<\/td> <\/td> <\/td> <\/td> 3DVAR<\/td>CRTM<\/td> Level 1b<\/td> NO<\/td>NO<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

CODES
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 G<\/strong>\u00a0Global
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 R<\/strong>\u00a0Regional
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 GD<\/strong>\u00a0Global deterministic
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 RD<\/strong>\u00a0Regional deterministic
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 GE<\/strong>\u00a0Global ensemble
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 RE<\/strong>\u00a0Regional ensemble
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tn<\/em><\/strong>\u00a0Truncation wavenumber
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ln<\/strong>\u00a0Number of levels
\u00a0\u00a0\u00a0 (n<\/em>d)<\/strong>\u00a0number of days
\u00a0\u00a0\u00a0<\/strong>\u00a0(n<\/em>m)<\/strong>\u00a0number of members \u00a0\u00a0<\/p>\n\n\n\n

Table 3    Use of ATOVS Radiances in NWP<\/a><\/h2>\n\n\n\n
Centre<\/td>NWP Systems using ATOVS<\/td>Thinning<\/td>Bias Corr.<\/td>Other Preproc<\/td>AMSU-A<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td>AMSU-B\/MHS<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td>HIRS<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/tr>
<\/td><\/td><\/td><\/td><\/td>Satellite<\/td><\/td><\/td><\/td><\/td><\/td><\/td>Channels<\/td><\/td><\/td>Satellite<\/td><\/td><\/td><\/td><\/td><\/td><\/td>Channels<\/td><\/td><\/td>Satellite<\/td><\/td><\/td><\/td><\/td><\/td><\/td>Channels<\/td><\/td><\/td><\/tr>
N15<\/td>N16<\/td>N17<\/td>N18<\/td>N19<\/td>AQ<\/td>MO<\/td>land\/sea<\/td>sea\/low topo<\/td>sea<\/td>N15<\/td>N16<\/td>N17<\/td>N18<\/td>N19<\/td>AQ<\/td>MO<\/td>land\/sea<\/td>sea\/low topo<\/td>sea<\/td>N15<\/td>N16<\/td>N17<\/td>N18<\/td>N19<\/td>AQ<\/td>MO<\/td>land\/sea<\/td>sea\/low topo<\/td>sea<\/td><\/td><\/td><\/td><\/td><\/td><\/tr>
 EC
(Canada)<\/strong><\/td>		GD, RD, GE<\/td>GD, RD: 150km
GE: 250km(1)<\/td>		 HK off-line
dynamic (2)<\/td>		screen for CLW
and precip<\/td>		X<\/td> X<\/td> <\/td>X<\/td>X<\/td>X<\/td> X<\/td>7-14<\/td>6<\/td> 4-5<\/td><\/td>X<\/td> <\/td>X<\/td>X<\/td> <\/td> X<\/td>3-4<\/td> <\/td> 2,5<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/td> <\/td><\/td><\/td><\/tr>
 ECMWF
(Europe)<\/strong><\/td>		GD,GE<\/td>125km<\/td>variational<\/td> <\/td>X<\/td>X <\/td> <\/td>X<\/td>X<\/td>X<\/td> X<\/td>7-14<\/td> 5-6<\/td> <\/td> <\/td> <\/td> <\/td>X<\/td>X<\/td> <\/td>X<\/td>3-5<\/td><\/td> <\/td> <\/td> <\/td><\/td> <\/td> <\/td> <\/td>X<\/td> <\/td>12<\/td>4-7,11,
14,15<\/td><\/tr>
 met.no
(Norway)<\/strong><\/td>		RD
(HIRLAM)<\/td>		50 km<\/td> HK off-line
static<\/td>		cloud clearing<\/td>X<\/td>X<\/td> <\/td>X<\/td> <\/td> <\/td> <\/td><\/td> <\/td>4-10<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 FNMOC\/NRL
(USA)<\/strong><\/td>		GD, GE<\/td>140km(4)<\/td>HK off-line
dynamic(5)<\/td>		screen for high CLW<\/td>X<\/td>X<\/td> <\/td> X<\/td>X<\/td> X<\/td>X<\/td>6-14<\/td> <\/td> 4-5<\/td> <\/td><\/td><\/td>X<\/td>X<\/td><\/td>X<\/td> <\/td> <\/td>4-5<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
DWD
(Germany)<\/strong><\/td>		GD<\/td>200km<\/td>off-line static(6)<\/td>screen for CLW and precip.<\/td> X<\/td><\/td> <\/td> X<\/td> X<\/td> <\/td>X<\/td> <\/td> <\/td> 5-14<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
Met Office
(UK)<\/strong><\/td>		GD,RD, GE<\/td> G=125\/154km
R=80km<\/td>		off-line<\/td>calibration
Remap to HIRS<\/td>		X<\/td> <\/td> <\/td> X<\/td> X<\/td> <\/td> X<\/td> 6-14<\/td> <\/td>4-5<\/td>X<\/td> <\/td> <\/td>X<\/td>X<\/td> <\/td>X<\/td> <\/td> <\/td>3-5<\/td> <\/td> <\/td> <\/td> <\/td> G<\/td> <\/td>G<\/td> <\/td> <\/td> 4-7,11
12,15<\/td><\/tr>
DMI
(Denmark)<\/strong><\/td>		RD (HIRLAM)<\/td>0.9 deg (100km)<\/td> HK off-line
static<\/td>		 <\/td>X<\/td>X<\/td> <\/td> X<\/td> X<\/td> <\/td>X<\/td>4-10(7)<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> X<\/td> X<\/td> <\/td>X<\/td> <\/td> <\/td> 3-5<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 JMA
(Japan)<\/strong><\/td>		GD,GE<\/td>G: AMSU-A 250km,
AMSU-B 180km
R: 45 km<\/td>		off-line for scan bias, remainder with variational<\/td>cloud\/rain
classification<\/td>		X<\/td>X<\/td> <\/td>X<\/td> X<\/td>X<\/td>X<\/td>8-13<\/td>6-7<\/td>4-5<\/td> X<\/td> <\/td> <\/td>X<\/td>X<\/td> <\/td> X<\/td> <\/td> <\/td>3-5<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
M\u00e9t\u00e9o France
(France)<\/strong><\/td>		GD,RD<\/td>125km;
80 km IASI RD<\/td>		 variational<\/td><\/td> X<\/td> X<\/td> <\/td>X<\/td> X<\/td> X<\/td>X<\/td>5-13(8,9)<\/td>5-13<\/td> 5-13<\/td>X<\/td> <\/td> <\/td>X<\/td> <\/td> <\/td>X<\/td>3-5<\/td>3-5<\/td>3-5<\/td> <\/td> <\/td> X<\/td> <\/td> X<\/td> <\/td>X<\/td> <\/td>12<\/td>4-7,11,
14,15<\/td><\/tr>
NCEP
(USA)<\/strong><\/td>		GD,RD<\/td> G=145km
R=120km IR,
60km MW<\/td>		 variational<\/td>(10)<\/td>X<\/td> <\/td> <\/td>X<\/td> X<\/td>X<\/td> X<\/td>1-13,15<\/td> <\/td> <\/td> X<\/td> <\/td> <\/td>X<\/td> G<\/td> <\/td>X<\/td>1-5<\/td> <\/td> <\/td> <\/td> <\/td><\/td> <\/td>X<\/td> <\/td>X<\/td>2-15<\/td> <\/td> <\/td><\/tr>
BoM
(Australia)<\/strong><\/td>		GD,RD<\/td>G=154km
R=80km<\/td>		HK off-line(11)<\/td>(12)<\/td> <\/td> X<\/td> <\/td> X<\/td> X<\/td> <\/td>X<\/td>7-14<\/td> 6<\/td>4-5<\/td> <\/td> <\/td> <\/td> X<\/td> <\/td> <\/td>X<\/td> <\/td> <\/td>3-5<\/td> <\/td> X<\/td> X<\/td> <\/td> X<\/td> <\/td>X<\/td> <\/td> <\/td>4-7,11
12,15<\/td><\/tr>
 CPTEC\/INPE
(Brazil)<\/strong><\/td>		GD, RD<\/td> 145 km<\/td> <\/td> <\/td>X<\/td> <\/td> <\/td>X<\/td>X<\/td> <\/td>X<\/td> <\/td> <\/td> <\/td> X<\/td> <\/td> <\/td>X<\/td> <\/td> <\/td>X<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> X<\/td> <\/td>X<\/td> <\/td>X<\/td> <\/td> <\/td> <\/td><\/tr>
OMSZ
(Hungary)<\/strong><\/td>		 RD<\/td>80km<\/td>variational<\/td> <\/td> X<\/td>X<\/td> <\/td> X<\/td><\/td> <\/td> <\/td> 5-12<\/td> <\/td> <\/td> X<\/td> <\/td> <\/td>X<\/td> <\/td> <\/td> <\/td>3-5<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 SMHI (Sweden)<\/strong><\/td> RD (HIRLAM)<\/td> 0.9 deg<\/td>HK off-linestatic<\/td> <\/td> X<\/td> X<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> 5-10<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 CNMCA (Italy)<\/strong><\/td> RD<\/td> R=120 km<\/td> off-line dynamic<\/td> Screen for CLW and precip<\/td> <\/td> X<\/td> <\/td> X<\/td> X<\/td> <\/td> X<\/td> 7-10<\/td> 5-6<\/td> 5-10<\/td> (3)<\/td>(3)<\/td>(3)<\/td>(3)<\/td>(3)<\/td>(3)<\/td>(3)<\/td> <\/td> 3-4<\/td>5<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 KMA (Korea)<\/strong><\/td> GD, RD, GE<\/td> G=154 km
R=80 km<\/td>		off-line<\/td> (120<\/td> X<\/td> <\/td> X<\/td> X<\/td> X<\/td> <\/td> X<\/td> 7-14<\/td> <\/td> 4-14<\/td> X<\/td> <\/td> <\/td> X<\/td> X<\/td> <\/td>X<\/td> <\/td> 3-5<\/td> <\/td> <\/td> <\/td> X<\/td> <\/td> X<\/td> <\/td> X<\/td> <\/td> <\/td> 2-8, 10, 15<\/td><\/tr>
 NCMRWF (India)<\/strong><\/td> GD<\/td> <\/td> variational<\/td> <\/td> X<\/td> <\/td> <\/td> X<\/td> X<\/td> X<\/td> X<\/td> 1-10, 12, 13<\/td> <\/td> <\/td> X<\/td> <\/td> <\/td>X<\/td> X<\/td> <\/td>X<\/td> 1-5<\/td> <\/td> <\/td> <\/td> <\/td> X<\/td> <\/td>X<\/td> <\/td> X<\/td> 2-15<\/td> <\/td> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

NOTE: All centres reject some channels from certain satellites for which the radiance data are known to be bad. These details are not provided here.<\/p>\n\n\n\n

CODES
          G<\/strong> Global
          R<\/strong> Regional
        GD<\/strong> Global deterministic
        RD<\/strong> Regional deterministic
        GE<\/strong> Global ensemble
        RE<\/strong> Regional ensemble
 Nxx,XX<\/strong> NOAA-XX
        MO<\/strong> Metop
<\/strong>        AQ<\/strong> Aqua  <\/p>\n\n\n\n

       off-line dynamic<\/strong>     bias corrections updated and applied to data before each analysis
     variational<\/strong>              e.g VarBC, where bias corrections are computed during variational analysis as part of minimization
      HK                        <\/strong> Harris and Kelly type bias correction (thickness predictors)       
      sea\/low topo<\/strong>       assimilation over ocean and low topograohy land 
     CLW<\/strong>                     cloud liquide water  <\/p>\n\n\n\n

          NOTES<\/strong>  <\/p>\n\n\n\n

                  (1)<\/strong>    Thinning to be reduced to 150 km (currently being tested)<\/p>\n\n\n\n

                  (2)<\/strong>     Bias correction is off-line static for AMSU-A channels 11-14<\/p>\n\n\n\n

                  (3)<\/strong>     AMSU-B\/MHS assimilation is being tested<\/p>\n\n\n\n

                  (4)<\/strong>     Start with taking every 4th point along scan, from every other scan line (skipping pattern to sample every scan point), then further reduce to approximately 140 km.<\/p>\n\n\n\n

                  (5)<\/strong>     VarBC code developed, to be tested this spring.<\/p>\n\n\n\n

                  (6)<\/strong>     Switch to an online bias correction scheme soon<\/p>\n\n\n\n

                  (7)<\/strong>     Channels 4-5 not assimilated over sea ice<\/p>\n\n\n\n

                  (8)<\/strong>     AMSU-A ch. 5-6 not assimilated over sea ice<\/p>\n\n\n\n

                  (9)<\/strong>     AMSU-A channels in range 5-13 not assimilated: N15 (6,11) N16 (5-10,12) AQ (5-7) MO (7)<\/p>\n\n\n\n

                (10)<\/strong>     Calibration and for RARS data removal of antenna correction (G), Calibration ( R )<\/p>\n\n\n\n

                (11)<\/strong>     Bias correction soon to become offline adaptive<\/p>\n\n\n\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(12)<\/strong>\u00a0\u00a0\u00a0\u00a0 Cailibration and pre-processing via AAPP at Met Office. Cloud detection, land\/sea\/ice determination in OPS pre-processor as part of Met Office UM suite.<\/p>\n\n\n\n

   Table 4     Use of ATOVS Retrievals in NWP<\/a><\/h2>\n\n\n\n
Centre<\/td>ATOVS retrievals<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/tr>
Used in radiance assimilation e.g. Qc<\/td>Assimilated<\/td>NWP system<\/td>Scheme\/Product<\/td>Variable(s)<\/td>Vertical resolution<\/td>Horizontal sampling<\/td>Excluded<\/td>Bias correction<\/td><\/td><\/tr>
 EC
(Canada)<\/strong><\/td>		 NO<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
ECMWF
(Europe)<\/strong><\/td>		NO<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
met.no
(Norway)<\/strong><\/td>		 NO<\/td>NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
FNMOC\/NRL
(USA)<\/strong><\/td>		NO<\/td>YES<\/td>RD (COAMPS, NAVDAS)<\/td> NESDIS<\/td>Temperature<\/td>Full to 10 mb<\/td>1.5 degrees
(167 km)<\/td>		over land<\/td>NO<\/td><\/tr>
DWD
(Germany)<\/strong><\/td>		NO<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
Met Office
(UK)<\/strong><\/td>		YES (1) (in GD)<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
DMI
(Denmark)<\/strong><\/td>		NO<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 JMA
(Japan)<\/strong><\/td>		NO<\/td>NO<\/td> <\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/tr>
M\u00e9t\u00e9o France
(France)<\/strong><\/td>		NO<\/td>NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 NCEP
(USA)<\/strong><\/td>		NO<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
BoM
(Australia)<\/strong><\/td>		YES (2)<\/td>NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
CPTEC=INPE
(Brazil)<\/strong><\/td>		NO<\/td>NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/td><\/tr>
OMSZ
(Hungary)<\/strong><\/td>		NO<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 SMHI
(Sweden)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 CNMCA
(Italy)<\/strong><\/td>		 NO<\/td>NO<\/td> RD<\/td> EUMETSAT<\/td>Temperature<\/td>Up to 10 hPa<\/td> <\/td> <\/td> <\/td><\/tr>
 KMA
(Korea)<\/strong><\/td>		 YES<\/td> NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 NCMRWF
(India)<\/strong><\/td>		 NO<\/td>NO<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

NOTES<\/strong><\/p>\n\n\n\n

(1)<\/strong> Run 1D-var prior to assimilation which analyses skin temperature and for advanced IR sounders cloud cover and emissivity which is used in the forward calculations in 4D-var.<\/p>\n\n\n\n

(2)
<\/strong>1D-Var
<\/strong><\/p>\n\n\n\n

Table 5       Use of AIRS and IASI Radiances in NWP<\/a><\/h2>\n\n\n\n

Note: For some centres, further information on channel numbers and observation errors for AIRS and IASI can be found at the end of this document. Also, please note the definitions of the bands below the table.<\/strong>  <\/p>\n\n\n\n

Centre<\/td>AIRS<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td>IASI<\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/td><\/tr>
<\/td>15 microns (1)<\/td><\/td>Window + O3 (2)<\/td><\/td>H2O (3)<\/td><\/td>Short Wave (4)<\/td><\/td>15 microns (1)<\/td><\/td>Window + O3 (2)<\/td><\/td>H2O (3)<\/td><\/td>Short Wave (4)<\/td><\/td><\/tr>
Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td>Land<\/td>Ocean<\/td><\/td><\/tr>
 EC
(Canada)<\/strong><\/td>		 4<\/td> 19<\/td>0<\/td> 10<\/td>26<\/td> 33<\/td>0<\/td> 24<\/td>14<\/td> 43<\/td>0<\/td> 19<\/td>0<\/td> 0<\/td>0<\/td> 0<\/td><\/tr>
 ECMWF
(Europe)<\/strong><\/td>		 48<\/td> 81<\/td> 0<\/td> 32<\/td> 0<\/td> 7<\/td> 0<\/td> 19<\/td> 0<\/td> 153<\/td> 0<\/td> 28<\/td> 0<\/td> 9<\/td> 0<\/td> 1 (*)<\/td><\/tr>
 met.no
(Norway)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 FNMOC\/NRL
(USA)<\/strong><\/td>		 31<\/td> 51<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> 13<\/td> 25<\/td> 51<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 DWD
(Germany)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 Met Office
(UK)<\/strong><\/td>		 46<\/td> 75<\/td> 0<\/td> 19<\/td> 0<\/td> 47<\/td> 0<\/td> 0<\/td> 87<\/td> 87<\/td> 14<\/td> 21<\/td> 30<\/td> 30<\/td> 0<\/td> 0<\/td><\/tr>
 DMI
(Denmark)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 JMA
(Japan)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 Meteo France
(France)<\/strong><\/td>		 0<\/td> 54<\/td> 0<\/td> 0<\/td> 0<\/td> 0<\/td> 0<\/td> 0<\/td> 50<\/td> 64<\/td> 0<\/td> 4<\/td> 9<\/td> 9<\/td> 0<\/td> 0<\/td><\/tr>
 NCEP
(USA)<\/strong><\/td>		 75<\/td> 75<\/td> 11<\/td> 11<\/td> 20<\/td> 20<\/td> 14<\/td> 14<\/td> 116<\/td> 116<\/td> 45<\/td> 45<\/td> 4<\/td> 4<\/td> <\/td> <\/td><\/tr>
 BoM
(Australia)<\/strong><\/td>		 <\/td> 20<\/td> <\/td> 12<\/td> <\/td> 16<\/td> <\/td> 14<\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 CPTEC\/INPE
(Brazil)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 SMHI
(Sweden)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 CNMCA
(Italy)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 KMA
(Korea)<\/strong><\/td>		 0<\/td> 20<\/td> 0<\/td> 11<\/td> 0<\/td> 16<\/td> 0<\/td> 0<\/td> 95<\/td> 124<\/td> 0<\/td> 29<\/td> 24<\/td> 30<\/td> 0<\/td>0<\/td><\/tr>
 NCMRWF
(India)<\/strong><\/td>		 75<\/td> <\/td> 11<\/td> <\/td> 20<\/td> <\/td> 14<\/td> <\/td> 116<\/td> <\/td> 45<\/td> <\/td> 4<\/td> <\/td> <\/td> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Notes:<\/strong><\/p>\n\n\n\n

(1)<\/strong> 15 microns: 650 – 770 cm^-1<\/p>\n\n\n\n

(2)<\/strong> Window + 03: 770 – 1210 cm^-1<\/p>\n\n\n\n

(3)<\/strong> H2O: 1210 – 2000 cm^-1<\/p>\n\n\n\n

(4)<\/strong> Short wave: 2000 – 2700 cm^-1<\/p>\n\n\n\n

(*) Channel 5480 – this is really a WV channel, but falls into the short-wave band in the above categorisation.\u00a0<\/p>\n\n\n\n

Table 6      Treatment of cloudy sounder radiances in NWP<\/a><\/h2>\n\n\n\n
Centre<\/th>HIRS<\/th>AIRS<\/th>IASI<\/th>AMSU-A<\/th>AMSU-B\/MHS<\/th><\/tr><\/thead>
EC
(Canada)<\/strong><\/td>		n\/a<\/td>IC<\/td>IC<\/td>IC<\/td>IC<\/td><\/tr>
 ECMWF
(Europe)<\/strong><\/td>		 IC & SV<\/td>IC & SV<\/td>IC & SV<\/td>IC<\/td>IC<\/td><\/tr>
 met.no
(Norway)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 FNMOC\/NRL
(USA)<\/strong><\/td>		 n\/a<\/td> IC<\/td>IC<\/td>IC<\/td>IC<\/td><\/tr>
 DWD
(Germany)<\/strong><\/td>		 <\/td> <\/td> <\/td>HH<\/td> <\/td><\/tr>
 Met Office
(UK)<\/strong><\/td>		 HH<\/td>SV
(with dynamic selection of weakly cloud-affected channels)<\/td>		SV
(with dynamic selection of weakly cloud-affected channels)<\/td>		AC<\/td>IC<\/td><\/tr>
 DMI
(Denmark)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 JMA
(Japan)<\/strong><\/td>		 <\/td> <\/td> <\/td> IC<\/td>IC<\/td><\/tr>
Meteo France
(France)<\/strong><\/td>		 IC<\/td>IC & SV<\/td>IC & SV<\/td> IC<\/td> IC<\/td><\/tr>
 NCEP
(USA)<\/strong><\/td>		IC<\/td>IC<\/td>IC<\/td>IC<\/td> IC<\/td><\/tr>
 BoM
(Australia)<\/strong><\/td>		 HH<\/td>HH<\/td> <\/td>IC<\/td>IC<\/td><\/tr>
 CPTEC\/INPE
(Brazil)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 SMHI
(Sweden)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td><\/tr>
 KMA
(Korea)<\/strong><\/td>		 <\/td> IC<\/td>IC<\/td> <\/td> <\/td><\/tr>
 NCMRWF
(India)<\/strong><\/td>		 <\/td> <\/td> <\/td> <\/td> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Notes:<\/strong><\/p>\n\n\n\n

HH: Hole hunting: search for FOVS for which all channels are clear, and only assimilate these clear-sky radiances. Cloud-affected radiances are not assimilated.<\/p>\n\n\n\n

IC: Insensitive channels: search for channels and spots which are considered clear, and only assimilate these clear radiances; clouds might be present for lower-peaking channels, but only channels insensitive to these clouds are assimilated. Cloud-affected radiances are not assimilated.<\/p>\n\n\n\n

CC: Cloud clearing: method to transform potentially cloud-affected observed radiances to clear radiances, and then assimilate these modified radiances.<\/p>\n\n\n\n

SV: Sink variable: cloud parameters are retrieved or analysed as a sink variable in 1D\/3D\/4D-Var, allowing the assimilation of certain cloud-affected radiances. The retrieved or analysed cloud information does not directly affect the model cloud fields.<\/p>\n\n\n\n

AC: Assimilate clouds: assimilation of cloud-affected radiances, using information from model clouds and with feedback on model clouds.<\/p>\n\n\n\n

Additional information<\/a><\/h2>\n\n\n\n

Some centres have kindly provided further information on channel usage and observation errors, especially for AIRS and IASI, but occasionally also for other instruments. These are provided below:<\/p>\n\n\n\n

EC (Canada)<\/a> as of 1 January 2012<\/p>\n\n\n\n

FNMOC\/NRL (USA) AMSUA AIRS AQUA<\/a> and IASI METOPA<\/a> as of 1 January 2012<\/p>\n\n\n\n

Meteo France (France)<\/a> as of 1 January 2012<\/p>\n\n\n\n

NCEP (USA)<\/a> as of 1 January 2012<\/p>\n","protected":false},"excerpt":{"rendered":"

Please send updates or corrections to the NWP WG co-chairs.\u00a0    Table 1    Overview  Institute Data Assimilation System Radiative Transfer Model ATOVS assimilated Bias Correction Scheme Status(applies to all tables) Global Regional or Km Scale Radiances Retrievals RARS \/\/EC\/\/\/\/(Canada)\/\/ 4DVAR & EnKF 3DVAR RTTOV8.7 YES NO NO Off-line \/\/\/\/ 1 January 2012 \/\/ECMWF\/\/(Europe) Hybrid 4DVAR\/Ens RTTOV10.1 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-35","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/pages\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":1,"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/pages\/35\/revisions"}],"predecessor-version":[{"id":36,"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/pages\/35\/revisions\/36"}],"wp:attachment":[{"href":"https:\/\/itwg.ssec.wisc.edu\/nwp\/wp-json\/wp\/v2\/media?parent=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}