Appendix A: Summary of all EPS Products

Appendix A: Summary of all EPS Products

In this annex, we summarise all EPS products generated at EUMETSAT or the SAFs up to Level 2.

The following is a definition of the different product levels, as understood in the EPS context:

Level 0: Raw data after restoration of the chronological data sequence for each instrument, i.e. after demultiplexing of the data by instrument, removal of any data overlap due to the data dump procedure and relevant quality checks. Raw instrument data information (telemetry packets) is maintained during this process.

Level 1a: Instrument data in full resolution with radiometric and geometric (i.e. Earth location) calibration computed and appended but not applied.

Level 1b: Calibrated, Earth-located and quality-controlled product, expressed as radiance or brightness temperature, in the original pixel location, and packaged with needed ancillary, engineering and auxiliary data.

Level 1c: In the case of the IASI spectra, Level 1b data after application of the apodisation function and addition of co-registered AVHRR radiance analysis.

Level 2: Earth-located values converted to geophysical parameters, at the same spatial and temporal sampling as the Level 1b or Level 1c data.

Level 3: Gridded point geophysical products on a multi-pass basis.

It is understood that the average user is interested in products of Level 1b and higher. Details on Level 0 and Level 1a products will thus not be provided in this summary.

Concerning Level 3 and higher, the SAFs generate a variety of both products and software, based not only on Metop or NOAA data, but on many other satellite data and conventional observations. For a complete and updated list of these high-level products, it is best to check the EUMETSAT SAF page from www.eumetsat.int or the specific SAF pages which are linked from there.

In the following table, NRT and ARC stand for Near Real Time and Archive respectively. When the archive is specifically the EUMETSAT archive, ARC is replaced in the table by EUMDC (= EUMETSAT Data Centre (formerly UMARF)).

Note that the following table is not complete for all products.

SATELLITE
PRODUCT NAME
LEVEL
MAIN GEOPHYSICAL
/ENG PARAMETER
PRODUCER
COVERAGE
DISSEMINATION
NRT
TIMELINESS
ACCURACY
SWATH WIDTH
H-RESOLUTION
V-RESOLUTION
H-samp
V-samp
Metop
AVHR_xxx_1B_Mnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 1 K (m wave & IR channels)

Geolocation: <1 km

Channel to Channel Misregistration:
£ 0.1 mrad		 1447 km
(2048 Earth view samples)		 Square IFOV: 0.0745 deg, equivalent to 1.08x1.08 km at nadir
N/A
 1.08 km across track at nadir,
1.1 km along track
N/A
Metop
HIRS_xxx_1B_Mnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 1 K (IR channels)

Albedo: 10-2 digits not affected by rounding		 1080.35 km
(56 Earth view samples)		 Circular IFOV: 0.69 deg, equivalent to 10.0 km at nadir
N/A
 10.0 km across track at nadir,
42.15 km along track
N/A
Metop
AMSA_xxx_1B_Mnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
1 K
 1026 km
(30 Earth view samples)		 Circular IFOV: 3.3 deg, equivalent to 47.63 km at nadir
N/A
 47.63 km across track at nadir,
52.69 km along track
N/A
Metop
MHSx_xxx_1B_Mnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
1 K
 1077.68 km
(90 Earth view samples)		 Circular IFOV: 1.1 deg, equivalent to 15.88 km at nadir
N/A
 15.88 km across track at nadir,
17.56 km along track
N/A
NOAA
AVHR_GAC_1B_Nnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 1 K (m wave & IR channels)

Geolocation: <1 km

Channel to Channel Misregistration:
£ 0.1 mrad		 1447 km
(409 Earth view samples) 		1.1 (along-track)
x 4.4 (across-track) km at nadir

(NOAA/GAC resolution)
N/A
 3.3 (along-track)
x 4.4 (across-track) km at nadir

(NOAA/GAC sampling)
N/A
NOAA
HIRS_xxx_1B_Nnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 1 K (IR channels)

Albedo: 10-2 digits not affected by rounding		 1080.35 km
(56 Earth view samples)		 Circular IFOV: 0.69 deg, equivalent to 10.0 km at nadir
N/A
 10.0 km across track at nadir,
42.15 km along track
N/A
NOAA
AMSA_xxx_1B_Nnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
1 K
 1026 km
(30 Earth view samples)		 Circular IFOV: 3.3 deg, equivalent to 47.63 km at nadir
N/A
 47.63 km across track at nadir,
52.69 km along track
N/A
NOAA
MHSx_xxx_1B_Nnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
1 K
 1077.68 km (90 Earth view samples) Circular IFOV: 1.1 deg, equivalent to 15.88 km at nadir
N/A
 15.88 km across track at nadir,
17.56 km along track
N/A
Metop
IASI_xxx_1B_Nnn
1b
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
          
 
Metop
GRAS_xxx_1B_Mnn
1b
Bending angle
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 1 mrad or 0.4% (whichever is larger)       <1000 km (mean distance between individual soundings over 12 h time window)
Surface to 80 km
Metop
GOME_xxx_1B_Mnn
1b
  
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 Geolocation: Barycentres of each FOV shall be positioned no worse than 0.06° of the scan mirror

TBD (46.435° scan angle)		      
Instrument Footprint
N/A
Metop
ASCA_SZO_1B_Mnn
1b
ASCAT σ0 (normalised backscatter) triplets
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 Radiometric accuracy:
0.5 db peak-to-peak

Radiometric resolution:
2 - 5%

Geolocation: 4 km		 Double swath of 550 km with a gap around satellite track of 700 km
50x50 km
N/A
25 km
(21 nodes)
N/A
Metop
ASCA_SZR_1B_Mnn
1b
ASCAT σ0 (normalised backscatter) triplets
EPS CGS
Global
NRT&EUMDC
2 h 15 m
 Radiometric accuracy:
0.5 db peak-to-peak

Radiometric resolution:
4 - 11%

Geolocation: 4 km		 Double swath of 550 km with a gap around satellite track of 700 km
(25-34)x(25-34) km
N/A
12.5 km
(41 nodes)
N/A
Metop
ASCA_ FUL _1B_Mnn
1b
ASCAT σ0 (normalised backscatter) individual values
EPS CGS
Global
EUMDC
2 h 15 m
Radiometric accuracy:
0.5 db peak-to-peak

Geolocation: 4 km
 Double swath of 550 km with a gap around satellite track of 700 km
Instrument resolution (approx 20x10 km)
N/A
Instrument sampling (256 values along each antenna footprint)
N/A
Metop
IASI_xxx_1C_Mnn
1c
Radiances
EPS CGS
Global
NRT&EUMDC
2 h 15 m
1 K
(IR channels)
  
Instrument FOV
N/A
Instrument FOV
N/A
Metop
ATOV_SND_02_Mnn
2
Atmospheric temperature
EPS CGS
Global
NRT&EUMDC
3 h
1.7 K Troposphere

2 K Stratosphere
1080.35 km
N/A
N/A
           		 HIRS/4 instrument horizontal sampling grid:
56 pixels per scan and
42.15 km scan separation		 Typically 40 Pressure levels
Atmospheric water vapour
20%
 Typically 15 Pressure levels
Surface emissivity
n/a (not a retrieved parameter)
N/A
Surface Temperature
0.6 K
N/A
Fractional cloud cover
5-10%
N/A
Cloud Top Temperature
1-2 K
N/A
Cloud Top Pressure
50 hPa
N/A
Tropopause height
50 hPa
N/A
Cloud Liquid Water Content
0.04 mm
N/A
Total Column Precipitable Water
5%
N/A
NOAA
ATOV_SND_02_Nnn
2
Atmospheric temperature
EPS CGS
Global
NRT&EUMDC
3 h
1.7 K Troposphere

2 K Stratosphere
1080.35 km
N/A
N/A
 HIRS/4 instrument horizontal sampling grid:
56 pixels per scan and
42.15 km scan separation		 Typically 40 Pressure levels
Atmospheric water vapour
20%
 Typically 15 Pressure levels
Surface emissivity
n/a (not a retrieved parameter)
N/A
Surface Temperature
0.6 K
N/A
Fractional cloud cover
5-10%
N/A
Cloud Top Temperature
1-2 K
N/A
Cloud Top Pressure
50 hPa
N/A
Tropopause height
50 hPa
N/A
Cloud Liquid Water Content
0.04 mm
N/A
Total Column Precipitable Water
5%
N/A
Metop
Reduced ATOVS Level 2 product from Metop (TBD name)
2
Atmospheric temperature
EPS CGS
Global
NRT&EUMDC
3 h
1.7 K Troposphere

2 K Stratosphere
       Every 4th HIRS/4 FOV and every 2nd HIRS/4 scan line Pressure levels for atmospheric temperature and water vapour profiles: every 4th level of the full product
Atmospheric water vapour
20%
Surface Temperature
0.6 K
N/A
NOAA
Reduced ATOVS Level 2 product from Metop (TBD name)
2
Atmospheric temperature
EPS CGS
Global
NRT&EUMDC
3 h
1.7 K Troposphere

2 K Stratosphere
       Every 4th HIRS/4 FOV and every 2nd HIRS/4 scan line Pressure levels for atmospheric temperature and water vapour profiles: every 4th level of the full product
Atmospheric water vapour
20%
Surface Temperature
0.6 K
N/A
Metop
IASI_SND_02_Mnn
2
Atmospheric temperature
EPS CGS
Global
NRT&EUMDC
3 h
1 K Troposphere

2 K Stratosphere
      
IASI FOV
 40 Pressure levels to 1 hPa
Rel Humidity: 10%
Rel Humidity: 10%
      
IASI FOV
 20 Pressure levels to 10 hPa
Cloud Cover: 10%<10% (climate)
Cloud Cover: 10%

<10% (climate)
      
IASI FOV
N/A
Cloud Top Temperature: 2K
Cloud Top Temperature:
2 K
      
IASI FOV
N/A
Cloud Top Height: 300m
Cloud Top Height: 300m
      
IASI FOV
N/A
Trace gases
Trace gases:
CH4 <20%
N2O <20%
CO <10%
      
250 km
N/A
Metop
Near Surface Wind Vector
2
  
Ocean & Sea Ice SAF
Global
NRT
3 h
2 m/s
(vector components)
      
nominal: 50 km

research: 25 km
N/A
Metop/
NOAA
Cloud Type (including Fog)
2
  
Nowcasting SAF
Regional
Software
15 min
N/A
      
Full AVHRR Resolution
N/A
Metop
Total Ozone from GOME
2
  
Ozone Monitoring SAF
Global
NRT
3 h
<5%
      
250 km
N/A
Metop/
NOAA
Total Ozone from HIRS
2
  
Ozone Monitoring SAF
Global
NRT
3 h
 
      
HIRS/4 FOV
N/A
Metop
Ozone Profiles
2
  
Ozone Monitoring SAF
Global
NRT
3 h
<15% at pressures <30 hPa

<50% at pressure >30 hPa
      
250 km
 7 km at pressures <30 hPa

<10 km at pressures >30 hPa
Metop
Aerosol Index
2
  
Ozone Monitoring SAF
Global
NRT
3 h
        
250 km
  
Metop
Trace Gases (note use of IASI not planned)
2
  
Ozone Monitoring SAF
Global
Offline
3 h
<50%

trace gases include ClO, BrO, SO2 and NO2
      
250 km
N/A
Metop
Ozone Profiles
2
  
Ozone Monitoring SAF
Global
Offline
3 h
<15% at pressures <30 hPa

<50% at pressure >30 hPa
     
250 km
 7 km at pressures <30 hPa

<10 km at pressures >30 hPa
Metop
Temperature, Humidity and Pressure Profiles
2
  
GRAS Meteorology SAF
Global
NRT
3 h
Temperature:

2 K Troposphere

1 K Stratosphere
       <1000 km
(mean distance between individual soundings over 12 h time window)		 30 Pressure levels 500 hPa to 10 hPa
Rel Humidity:
10% or 0.2 g/kg
(whichever is larger)
       <1000 km
(mean distance between individual soundings over 12 h time window)		 20 Pressure levels to 300 hPa
Metop
Temperature, Humidity and Pressure Profiles
2
  
GRAS Meteorology SAF
Global
Offline
3 h
Temperature:

2 K Troposphere

1 K Stratosphere
       <1000 km
(mean distance between individual soundings over 12 h time window)		 30 Pressure levels 500 to 10 hPa
Rel Humidity:
10% or 0.2 g/kg
(whichever is larger)
       <1000 km
(mean distance between individual soundings over 12 h time window)		 20 Pressure levels to 300 hPa
Metop/
NOAA
Aerosol
2
  
Land Surface Analysis SAF
Global
NRT
12 h
<50%
      
1 km
 
Metop/
NOAA
Land Surface Temperature
2
  
Land Surface Analysis SAF
Global
NRT
6 h
4 K
      
1 km
N/A
Metop/
MSG/
NOAA
Land Surface Temperature
2
  
Land Surface Analysis SAF
Global
NRT
6 h
4 K
      
3 km
N/A
Metop/
NOAA
N. Europe Snow Cover
2
  
Land Surface Analysis SAF
Regional
NRT
1 d
5%
      
1 km
N/A
Metop/
MSG/
NOAA
Vegetation Index
2
 
Land Surface Analysis SAF
Regional
Offline
1 d
N/A
      
1 km
N/A