
	Annex 6: Record Description of the IASI Level 2 Products

Annex 6: Record Description of the IASI Level 2 Products

This IASI L2 description corresponds to the IASI Level 2 PFS [RD13] Issue v7B (PFV 10.0) and to the Generic PFS [RD11] Issue 6 Revision 6.

In the tables below, coloured items have the following meanings:

Compound data type, which consists of at least two basic or other compound data types. The name of the compound data type is shown first, followed by a list of the items contained within it.

Dimension parameter for variable product fields.

Summary of Product Format Version record contents history

PFV = 10.0

Record name Record version

mphr 2

giadr 3

mdr 3

If more than one version of a record exists, all versions are described below.

Name	Description	Scaling factor	Units	Dim1	Dim2	Dim3	Dim4	Type	Type size	Field size	Offset
RECORD_HEADER	Generic Record Header			1	1	1	1	REC_HEAD	20	20	0
Product Details
PRODUCT_NAME	Complete name of the product			1	1	1	1	string	67	100	20
PARENT_PRODUCT_NAME_1	Name of the parent product from which this product has been produced. For Level 0 products, this field is filled with lower case x's.			1	1	1	1	string	67	100	120
PARENT_PRODUCT_NAME_2	Name of the parent product from which this product has been produced. For Level 0 products or products for which this is not appropriate, this field is filled with lower case x's.			1	1	1	1	string	67	100	220
PARENT_PRODUCT_NAME_3	Name of the parent product from which this product has been produced. For Level 0 products or products for which this is not appropriate, this field is filled with lower case x's.			1	1	1	1	string	67	100	320
PARENT_PRODUCT_NAME_4	Name of the parent product from which this product has been produced. For Level 0 products or products for which this is not appropriate, this field is filled with lower case x's.			1	1	1	1	string	67	100	420
INSTRUMENT_ID	Instrument identification			1	1	1	1	enumerated	4	37	520
INSTRUMENT_MODEL	Instrument Model identification			1	1	1	1	enumerated	3	36	557
PRODUCT_TYPE	Product Type			1	1	1	1	enumerated	3	36	593
PROCESSING_LEVEL	Processing Level Identification			1	1	1	1	enumerated	2	35	629
SPACECRAFT_ID	Spacecraft identification			1	1	1	1	enumerated	3	36	664
SENSING_START	UTC Time of start of sensing data in this object (PDU, ROI or Full Product)			1	1	1	1	time	15	48	700
SENSING_END	UTC Time of end of sensing data in this object (PDU, ROI or Full Product)			1	1	1	1	time	15	48	748
SENSING_START_THEORETICAL	Theoretical UTC Time of start of sensing data in the dump from which this object is derived. This data is the predicted start time at the MPF level.			1	1	1	1	time	15	48	796
SENSING_END_THEORETICAL	Theoretical UTC Time of end of sensing data in the dump from which this object is derived. This data is the predicted end time at the MPF level.			1	1	1	1	time	15	48	844
PROCESSING_CENTRE	Processing Centre Identification			1	1	1	1	enumerated	4	37	892
PROCESSOR_MAJOR_VERSION	Processing chain major version number			1	1	1	1	uinteger	5	38	929
PROCESSOR_MINOR_VERSION	Processing chain minor version number			1	1	1	1	uinteger	5	38	967
FORMAT_MAJOR_VERSION	Data set Format Major Version number			1	1	1	1	uinteger	5	38	1005
FORMAT_MINOR_VERSION	Data set Format Minor Version number			1	1	1	1	uinteger	5	38	1043
PROCESSING_TIME_START	UTC time of the processing at start of processing for the product			1	1	1	1	time	15	48	1081
PROCESSING_TIME_END	UTC time of the processing at end of processing for the product			1	1	1	1	time	15	48	1129
PROCESSING_MODE	Identification of the mode of processing			1	1	1	1	enumerated	1	34	1177
DISPOSITION_MODE	Identification of the disposition mode			1	1	1	1	enumerated	1	34	1211
RECEIVING_GROUND_STATION	Acquisition Station Identification			1	1	1	1	enumerated	3	36	1245
RECEIVE_TIME_START	UTC time of the reception at CDA for first Data Item			1	1	1	1	time	15	48	1281
RECEIVE_TIME_END	UTC time of the reception at CDA for last Data Item			1	1	1	1	time	15	48	1329
ORBIT_START	Start Orbit Number, counted incrementally since launch			1	1	1	1	uinteger	5	38	1377
ORBIT_END	Stop Orbit Number			1	1	1	1	uinteger	5	38	1415
ACTUAL_PRODUCT_SIZE	Size of the complete product		bytes	1	1	1	1	uinteger	11	44	1453
ASCENDING NODE ORBIT PARAMETERS
STATE_VECTOR_TIME	Epoch time (in UTC) of the orbital elements and the orbit state vector. this corresponds to the time of crossing the ascending node for ORBIT_START		UTC	1	1	1	1	longtime	18	51	1497
SEMI_MAJOR_AXIS	Semi major axis of orbit at time of the ascending node crossing.		mm	1	1	1	1	integer	11	44	1548
ECCENTRICITY	Orbit eccentricity at time of the ascending node crossing	10^6		1	1	1	1	integer	11	44	1592
INCLINATION	Orbit inclination at time of the ascending node crossing	10^3	deg	1	1	1	1	integer	11	44	1636
PERIGEE_ARGUMENT	Argument of perigee at time of the ascending node crossing	10^3	deg	1	1	1	1	integer	11	44	1680
RIGHT_ASCENSION	Right ascension at time of the ascending node crossing	10^3	deg	1	1	1	1	integer	11	44	1724
MEAN_ANOMALY	Mean anomaly at time of the ascending node crossing	10^3	deg	1	1	1	1	integer	11	44	1768
X_POSITION	X position of the orbit state vector in the orbit frame at ascending node	10^3	m	1	1	1	1	integer	11	44	1812
Y_POSITION	Y position of the orbit state vector in the orbit frame at ascending node	10^3	m	1	1	1	1	integer	11	44	1856
Z_POSITION	Z position of the orbit state vector in the orbit frame at ascending node	10^3	m	1	1	1	1	integer	11	44	1900
X_VELOCITY	X velocity of the orbit state vector in the orbit frame at ascending node	10^3	m/s	1	1	1	1	integer	11	44	1944
Y_VELOCITY	Y velocity of the orbit state vector in the orbit frame at ascending node	10^3	m/s	1	1	1	1	integer	11	44	1988
Z_VELOCITY	Z velocity of the orbit state vector in the orbit frame at ascending node	10^3	m/s	1	1	1	1	integer	11	44	2032
EARTH_SUN_DISTANCE_RATIO	Earth-Sun distance ratio - ratio of current Earth-Sun distance to Mean Earth-Sun distance			1	1	1	1	integer	11	44	2076
LOCATION_TOLERANCE_RADIAL	Nadir Earth location tolerance radial		m	1	1	1	1	integer	11	44	2120
LOCATION_TOLERANCE_CROSSTRACK	Nadir Earth location tolerance cross-track		m	1	1	1	1	integer	11	44	2164
LOCATION_TOLERANCE_ALONGTRACK	Nadir Earth location tolerance along-track		m	1	1	1	1	integer	11	44	2208
YAW_ERROR	Constant Yaw attitude error	10^3	deg	1	1	1	1	integer	11	44	2252
ROLL_ERROR	Constant Roll attitude error	10^3	deg	1	1	1	1	integer	11	44	2296
PITCH_ERROR	Constant Pitch attitude error	10^3	deg	1	1	1	1	integer	11	44	2340
LOCATION SUMMARY
SUBSAT_LATITUDE_START	Latitude of sub-satellite point at start of the data set	10^3	Deg	1	1	1	1	integer	11	44	2384
SUBSAT_LONGITUDE_START	Longitude of sub-satellite point at start of the data set	10^3	Deg	1	1	1	1	integer	11	44	2428
SUBSAT_LATITUDE_END	Latitude of sub-satellite point at end of the data set	10^3	Deg	1	1	1	1	integer	11	44	2472
SUBSAT_LONGITUDE_END	Longitude of sub-satellite point at end of the data set	10^3	Deg	1	1	1	1	integer	11	44	2516
Leap Second Information
LEAP_SECOND	Occurrence of Leap second within the product. Field is set to -1, 0 or +1 dependent upon occurrence of leap second and direction.			1	1	1	1	integer	2	35	2560
LEAP_SECOND_UTC	UTC time of occurrence of the Leap Second (If no leap second in the product, value is null)			1	1	1	1	time	15	48	2595
Record counts
TOTAL_RECORDS	Total count of all records in the product			1	1	1	1	uinteger	6	39	2643
TOTAL_MPHR	Total count of all MPHRs in product (should always be 1!)			1	1	1	1	uinteger	6	39	2682
TOTAL_SPHR	Total count of all SPHRs in product (should be 0 or 1 only)			1	1	1	1	uinteger	6	39	2721
TOTAL_IPR	Total count of all IPRs in the product			1	1	1	1	uinteger	6	39	2760
TOTAL_GEADR	Total count of all GEADRs in the product			1	1	1	1	uinteger	6	39	2799
TOTAL_GIADR	Total count of all GIADRs in the product			1	1	1	1	uinteger	6	39	2838
TOTAL_VEADR	Total count of all VEADRs in the product			1	1	1	1	uinteger	6	39	2877
TOTAL_VIADR	Total count of all VIADRs in the product			1	1	1	1	uinteger	6	39	2916
TOTAL_MDR	Total count of all MDRs in the product			1	1	1	1	uinteger	6	39	2955
Record Based Generic Quality Flags
COUNT_DEGRADED_INST_MDR	Count of MDRs with degradation due to instrument problems			1	1	1	1	uinteger	6	39	2994
COUNT_DEGRADED_PROC_MDR	Count of MDRs with degradation due to processing problems			1	1	1	1	uinteger	6	39	3033
COUNT_DEGRADED_INST_MDR_BLOCKS	Count of the number of blocks of MDRs degraded due to degraded instrument			1	1	1	1	uinteger	6	39	3072
COUNT_DEGRADED_PROC_MDR_BLOCKS	Count of the number of blocks of MDRs degraded due to degraded processing			1	1	1	1	uinteger	6	39	3111
Time Based Generic Quality Flags
DURATION_OF_PRODUCT	The duration of the product in milliseconds		ms	1	1	1	1	uinteger	8	41	3150
MILLISECONDS_OF_DATA_PRESENT	The total amount of data present in the product		ms	1	1	1	1	uinteger	8	41	3191
MILLISECONDS_OF_DATA_MISSING	The total amount of data missing from the product		ms	1	1	1	1	uinteger	8	41	3232
Regional Product Information
SUBSETTED_PRODUCT	Set when product has been subset (e.g. geographically subset using a region of interest filter). Implies the presence of one or more UMARF GIADRs in GAD section for product retrieved from UMARF.			1	1	1	1	boolean	1	34	3273
Total: 3307

GIADR ( name 'giadr', class 5, subclass 1, version 3 )

Name	Description	Scaling factor	Units	Dim1	Dim2	Dim3	Dim4	Type	Type size	Field size	Offset
RECORD_HEADER	Generic Record Header			1	1	1	1	REC_HEAD	20	20	0
GIADR_CONTENTS
NUM_PRESSURE_LEVELS_TEMP	Number of pressure levels for temperature profile retrieval, NLT			1	1	1	1	u-byte	1	1	20
PRESSURE_LEVELS_TEMP	Pressure levels on which retrieved temperature profiles are given	10^2	Pa	NLT	1	1	1	uinteger4	4	360	21
NUM_PRESSURE_LEVELS_HUMIDITY	Number of pressure levels for humidity profile retrieval, NLQ			1	1	1	1	u-byte	1	1	381
PRESSURE_LEVELS_HUMIDITY	Pressure levels on which retrieved humidity profiles are given	10^2	Pa	NLQ	1	1	1	uinteger4	4	360	382
NUM_PRESSURE_LEVELS_OZONE	Number of pressure levels for ozone profile retrieval, NLO			1	1	1	1	u-byte	1	1	742
PRESSURE_LEVELS_OZONE	Pressure layers, defined by 2 pressure levels each, on which retrieved ozone profiles are given	10^2	Pa	2	NLO	1	1	uinteger4	4	80	743
NUM_SURFACE_EMISSIVITY_WAVELENGTHS	Number of wavelengths for surface emissivity retrieval, NEW			1	1	1	1	u-byte	1	1	823
SURFACE_EMISSIVITY_WAVELENGTHS	Wavelengths for surface emissivity	10^4	mu_m	NEW	1	1	1	uinteger4	4	80	824
Total: 904

MDR ( name 'mdr', class 8, subclass 1, version 3 )

Name	Description	Scaling factor	Units	Dim1	Dim2	Dim3	Dim4	Type	Type size	Field size	Offset
RECORD_HEADER	Generic Record Header			1	1	1	1	REC_HEAD	20	20	0
GENERIC_QUALITY_INDICATORS
DEGRADED_INST_MDR	Quality of MDR has been degraded from nominal due to an instrument degradation			1	1	1	1	boolean	1	1	20
DEGRADED_PROC_MDR	Quality of MDR has been degraded from nominal due to a processing degradation			1	1	1	1	boolean	1	1	21
MEASUREMENT_DATA
ATMOSPHERIC_TEMPERATURE	Temperature (for 120 IFOV with up to 90 vertical levels)	10^2	K	NLT	120	1	1	uinteger2	2	21600	22
ATMOSPHERIC_WATER_VAPOUR	Water vapour (for 120 IFOV with up to 90 vertical levels)	10^6	kg/kg	NLQ	120	1	1	uinteger4	4	43200	21622
ATMOSPHERIC_OZONE	Ozone (for 120 IFOV with up to 10 vertical layers)	10^6	kg.m^-2	NLO	120	1	1	uinteger2	2	960	64822
INTEGRATED_OZONE	Integrated ozone (for 120 IFOV)	10^6	kg.m^-2	120	1	1	1	uinteger2	2	240	67222
NUMBER_SURFACE_TEMPS	Number of surface temperatures in IFOV			120	1	1	1	u-byte	1	120	67462
SURFACE_TEMPERATURE	Surface temperature (for 120 IFOV and up to 2 temperatures)	10^2	K	2	120	1	1	uinteger2	2	480	67582
INEGRATED_N2O	Integrated N20 (for 120 IFOV)	10^6	kg.m^-2	120	1	1	1	uinteger2	2	240	68062
INTEGRATED_CO	Integrated CO (for 120 IFOV)	10^7	kg.m^-2	120	1	1	1	uinteger2	2	240	68302
INTEGRATED_CH4	Integrated CH4 (for 120 IFOV)	10^6	kg.m^-2	120	1	1	1	uinteger2	2	240	68542
INTEGRATED_CO2	Integrated CO2 ( for 120 IFOV)	10^3	kg.m^-2	120	1	1	1	uinteger2	2	240	68782
SURFACE_EMISSIVITY	Surface emissivity (for 120 IFOV with up to 20 wavelengths)	10^4		NEW	120	1	1	uinteger2	2	4800	69022
NUMBER_CLOUD_FORMATIONS	Number of cloud formations in IFOV			120	1	1	1	u-byte	1	120	73822
FRACTIONAL_CLOUD_COVER	Fractional cloud cover (for 120 IFOV with up to 3 cloud formations)	10^2	%	3	120	1	1	uinteger2	2	720	73942
CLOUD_TOP_TEMPERATURE	Cloud top temperature (for 120 IFOV with up to 3 cloud formations)	10^2	K	3	120	1	1	uinteger2	2	720	74662
CLOUD_TOP_PRESSURE	Cloud top pressure (for 120 IFOV with up to 3 cloud formations)		Pa	3	120	1	1	uinteger4	4	1440	75382
CLOUD_PHASE	Cloud Phase (for 120 IFOV with up to 3 cloud formations) (0 = no cloud, 1 = liquid, 2 = ice, 3 = mixed)			3	120	1	1	enumerated	1	360	76822
SURFACE_PRESSURE	Surface pressure		Pa	120	1	1	1	uinteger4	4	480	77182
INSTRUMENT
INSTRUMENT_MODE	Instrument mode. This is a copy of the MDR-1C flag GEPSIasiMode as defined in the IASI L1 PFS.			1	1	1	1	enumerated	1	1	77662
NAVIGATION_DATA_AT_SCAN_LINE
TIME_ATTITUDE	Time Associated with Attitude Angles		s	1	1	1	1	uinteger4	4	4	77663
ATITUDE_ANGLES	Attitude Angles: Roll, Pitch, Yaw	10^3	deg	3	1	1	1	integer2	2	6	77667
NAVIGATION_STATUS	Navigation Status Bit Field			1	1	1	1	bitfield ( 4 )	4	4	77673
SPACECRAFT_ALTITUDE	Spacecraft Altitude Above Reference Geoid (MSL)	10^1	km	1	1	1	1	uinteger4	4	4	77677
NAVIGATION_DATA_AT_IFOV
ANGULAR_RELATION	Angular relationships: solar zenith angle, satellite zenith angle, solar azimuth angle, satellite azimuth angle for 120 IFOV	10^2	deg	4	120	1	1	integer2	2	960	77681
EARTH_LOCATION	Earth Location: latitude, longitude of surface footprint (for 120 IFOV)	10^4	deg	2	120	1	1	integer4	4	960	78641
PROCESSING_AND_QUALITY_FLAGS
FLG_ATOVCLR	Cloud flag for ATOVS products			120	1	1	1	bitfield ( 1 )	1	120	79601
FLG_ATOVCMP	Completness of ATOVS products			120	1	1	1	bitfield ( 1 )	1	120	79721
FLG_ATOVINT	Interpolation of ATOVS to IASI			120	1	1	1	bitfield ( 3 )	3	360	79841
FLG_AVHAVL	Completness flag for AVHRR products			120	1	1	1	enumerated	1	120	80201
FLG_AVHBAD	Validation flag for AVHRR products			120	1	1	1	bitfield ( 1 )	1	120	80321
FLG_CHNSEL	Channel selection			120	1	1	1	enumerated	1	120	80441
FLG_CLDAVH	Number of cloud formations analysed in AVHRR			120	1	1	1	enumerated	1	120	80561
FLG_CLDFRM	Number of cloud formations and origin of height assignment			120	1	1	1	bitfield ( 2 )	2	240	80681
FLG_CLDPHA	Cloud Phase			120	1	1	1	enumerated	1	120	80921
FLG_CLDSUM	Summary indicating which instruments see clouds			120	1	1	1	bitfield ( 2 )	2	240	81041
FLG_CLDTST	Cloud tests that are executed			120	1	1	1	bitfield ( 1 )	1	120	81281
FLG_DAYNIT	Discrimination between day and night			120	1	1	1	enumerated	1	120	81401
FLG_FGCHECK	Check whether first guess retrievals passed to iterative retrieval			120	1	1	1	bitfield ( 2 )	2	240	81521
FLG_FINCHC	Final choice of retrieval			120	1	1	1	bitfield ( 4 )	4	480	81761
FLG_FRCSEL	Selection of fractional cloud cover from IASI/ATOVS or AVHRR			120	1	1	1	bitfield ( 1 )	1	120	82241
FLG_IASIBAD	Validation flag for IASI Level 1 product			120	1	1	1	bitfield ( 2 )	2	240	82361
FLG_IASICLD	Results of cloud test			120	1	1	1	bitfield ( 1 )	1	120	82601
FLG_IASICLR	IASI IFOV clear, partly cloudy or cloudy			120	1	1	1	enumerated	1	120	82721
FLG_INITIA	Retrieval initialisation			120	1	1	1	bitfield ( 1 )	1	120	82841
FLG_ITCONV	Convergence of the iterative retrieval			120	1	1	1	enumerated	1	120	82961
FLG_ITRBOU	Validation of iterated state vector			120	1	1	1	enumerated	1	120	83081
FLG_LANSEA	Specifies surface type			120	1	1	1	enumerated	1	120	83201
FLG_NUMIT	Number of iterations used for retrieval			120	1	1	1	u-byte	1	120	83321
FLG_NWPBAD	Validation flag of NWP forecast			120	1	1	1	enumerated	1	120	83441
FLG_QUAL	Quality and completness of the retrieval			120	1	1	1	enumerated	1	120	83561
FLG_RESID	Retrieval residual acceptance flag			120	1	1	1	enumerated	1	120	83681
FLG_RETBOU	Identification of out-of-bounds state vector elements			120	1	1	1	bitfield ( 32 )	32	3840	83801
FLG_RETCHC	Choice of combined or IASI stand alone retrieval			120	1	1	1	bitfield ( 1 )	1	120	87641
FLG_SATMAN	Indication of satellite manouevre			120	1	1	1	enumerated	1	120	87761
FLG_SELBAC	Selection of background state			120	1	1	1	enumerated	1	120	87881
FLG_SFCAVH	Indication of AVHRR derived surface temperature			120	1	1	1	bitfield ( 1 )	1	120	88001
FLG_SFCTOP	Validation flag for surface type and topography			120	1	1	1	bitfield ( 1 )	1	120	88121
FLG_SUNGLNT	Identification of sun glint			120	1	1	1	enumerated	1	120	88241
FLG_SUPADI	Indication of super-adiabatic conditions in final retrieval			120	1	1	1	enumerated	1	120	88361
FLG_SUPSAT	Indication of super-saturation in final retrieval			120	1	1	1	enumerated	1	120	88481
FLG_THICIR	Thin cirrus cloud test			120	1	1	1	enumerated	1	120	88601
FLG_THICOR	Thin cirrus has been corrected for			120	1	1	1	enumerated	1	120	88721
FLG_VARCLR	Cloud clearing by variational analysis			120	1	1	1	enumerated	1	120	88841
FLG_STER	Representation of retrieval errors. Determines type of data in MDR.ERROR_DATA.			1	1	1	1	enumerated	1	1	88961
DATA_SIZES	Two sizing values for data stored in ERROR_DATA field. Meaning of sizes depends on the FLG_STER [M, N]			2	120	1	1	DATA_SIZES	2	480	88962
M	Length of full state vector (NEW+NQL+NTL+NCL+5), M			1	1	1	1	uinteger2	2	2
N	Number of wavelets that give approximate 10x compression of covariance matrix, N			1	1	1	1	uinteger2	2	2
ERROR_DATA	Contents depend on MDR.FLG_STER field: See below
If FLG_STER = 0 then Field is empty (No Error Data)
Total: 89442
If FLG_STER = 1,2 then
VARIANCES	Variances of length N (M = length of full state vector, N = 0)			M	120	1	1	vinteger4	5	139200	89442
End If
Total: 228642
If FLG_STER = 4 then
DIAGONAL_VALUES	Diagonal Values of the inverted original covariance matrix (M = length of full state vector, N = number of wavelet coefficients)			M	120	1	1	vinteger4	5	139200	89442
WAVELETS	Wavelet values			N	120	1	1	WAVELET_COEFF	7	3228960	228642
ROW	Row index position of the wavelet			1	1	1	1	u-byte	1	1
COLUMN	Column index position of the wavelet			1	1	1	1	u-byte	1	1
COEFFICIENT	Wavelet coefficent value			1	1	1	1	vinteger4	5	5
End If
Total: 3457602

The following flags are of type enumerated, u-byte, or bit string. The types enumerated and u-byte always consists of 1 byte, while the number of bits per bit string can vary but are always a multiple of 8.

Size of bit strings that can be found in the IASI L2 product:

IASI L2 Bit Strings
Number of Bits	Number of Bytes
8	1
16	2
24	3
32	4
256	32

The bit string encoding is defined in Annex 4.1. Any individual bit in the bit string may be set to 0 or 1. By default all bits are set to zero. The following tables describe in the column 'Meaning' the conditions under which the bits are set to 1. If the size of the bit string is larger than the number of used bits, the unused bits are set to zero.

Enumeration DISPOSITION_MODE

Value	Description
T	Testing
O	Operational
C	Commissioning

Enumeration FLG_STER

FLG_STER	Representation of retrieval errors. Determines content and size of data in MDR.ERROR_DATA.	Enumerated, length: 1 Byte
Value	Meaning	DATA_SIZES of ERROR_DATA in IASI L2 MDR
0	No error variance or covariance given in the product	field does not exist
1	Constant error variances are assigned to the state vector as specified in the user configurable data set	DATA_SIZES(M), M is length of full state vector, N = 0
2	Error variances are calculated in the iterative retrieval	DATA_SIZES(M), M is length of full state vector, N = 0
3	For future use	N/A
4	Diagonal elements of the inverted covariance matrix and wavelet coefficients describing the correlation matrix as calculated from the inverse covariance matrix derived in the iterative retrieval.	DATA_SIZES(M) is set to length of FULL state vector. DATA_SIZES(N) is set to the number of wavelet coefficients that are to be stored ERROR_DATA field contains the following: · a 1-D array of V-INTEGER4 of length M containing the diagonal values of the inverted original covariance matrix · an array of length N of a compound variable WAVELET_COEFF. The compound WAVELET_COEFF comprises: · an U-BYTE containing i position of wavelet coefficient · an U-BYTE containing j position of wavelet coefficient · a V-INTEGER4 containing value of the wavelet coefficient Missing state vector elements are given flagged values as per the GPFS.

Enumeration INSTRUMENT_ID

Value	Name	Description
AMSA	AMSU-A
ASCA	ASCAT
ATOV	ATOVS	instruments: AVHRR/3, HIRS/4, AMSU-A, MHS
AVHR	AVHRR/3
GOME	GOME
GRAS	GRAS
HIRS	HIRS/4
IASI	IASI
MHSx	MHS
NOAA	All NOAA	instruments specific to Level 0 NOAA product
SEMx	SEM
ADCS	ADCS
SBUV	SBUV
xxxx	No specific instrument
HKTM	VCDU34	data specific to Level 0

Enumeration INSTRUMENT_MODE

Value	Description
N/A	TBD

Enumeration INSTRUMENT_MODEL

Value	Description
0	Reserved
1	Flight Model 1
2	Flight Model 2
3	Engineering Model
4	Protoflight Model

Enumeration PROCESSING_CENTRE

Value	Description
CGS1	First EUMETSAT EPS Core Ground Segment
CGS2	Second EUMETSAT EPS Core Ground Segment
NSSx	NOAA/NESDIS
RUSx	Reference User Station
DMIx	DMI, Copenhagen (GRAS SAF)
DWDx	DWD, Offenbach (Climate SAF)
FMIx	FMI , Helsinki (Ozone SAF)
IMPx	IMP, Lisbon (Land SAF)
INMx	INM, Madrid (NCW SAF)
MFxx	MF, Lannion (OSI SAF)
UKMO	UKMO, Bracknell (NWP SAF)

Enumeration PROCESSING_LEVEL

Value	Name
00	Level 0
01	Level 1
1A	Level 1a
1B	Level 1b
1C	Level 1c
02	Level 2
03	Level 3
xx	No Specific Level

Enumeration PROCESSING_MODE

Value	Name	Description
N	Nominal	NRT processing
B	Backlog Processing
R	Reprocessing
V	Validation

Enumeration PRODUCT_TYPE

Value	Description
ENG	IASI engineering data
GAC	NOAC Global Area Coverage AVHRR data
SND	Sounding Data
SZF	ASCAT calibrated s0 data at full resolution
SZO	ASCAT calibrated s0 data at operational resolution (50 km)
SZR	ASCAT calibrated s0 data at research resolution (25 km)
VER	IASI verification data
xxx	No specific product type specified
AIP	NOAA AIP/SAIP data
TIP	NOAA TIP/STIP data
HRP	HRPT data
LRP	LRPT data

Enumeration RECEIVING_GROUND_STATION

Value	Name
SVL	Svalbard
WAL	Wallops Island, Virginia
FBK	Fairbanks, Alaska
SOC	SOCC (NESDIS Satellite Operations Control Centre), Suitland, Maryland
RUS	Reference User Station

Enumeration SPACECRAFT_ID

Value	Description
xxx	No specific spacecraft
M01	METOP 01
M02	METOP 02
M02	METOP 03
N15	NOAA-K
N16	NOAA-L
N17	NOAA-M
N18	NOAA-N
N19	NOAA-N'

Enumeration FLG_AVHAVL

FLG_AVHAVL	Completeness flag for AVHRR products	Enumerated, 1 Byte
Value	Meaning
0	AVHRR mask has been created and data are available
1	AVHRR mask could not be created (missing side information)
2	AVHRR data are only partly, but sufficiently available to fill the mask
3	AVHRR data are not or not sufficiently available to fill the mask

Enumeration FLG_CHNSEL

FLG_CHNSEL	Channel selection	Enumerated, length: 1 Byte
Value	Meaning
0	No selection made or selection invalid
1	Selection of all IASI channels as per user-configuration
2	Selection of a subset of IASI channels due to lacking data
3	Selection of super channels as per user configuration
4	Selection of subset of super channels due to lacking data

Enumeration FLG_CLDAVH

FLG_CLDAVH	Number of cloud formations analysed in AVHRR	Enumerated, length: 1 Byte
Value	Meaning
0	No cloud formation has been identified
1	One cloud formation has been identified
2	Two cloud formations have been identified
3	Three cloud formations have been identified

Enumeration FLG_CLDPHA

FLG_CLDPHA	Number of cloud phases	Enumerated, length: 1 Byte
Value	Meaning
0	The IASI IFOV is cloud free
1	Phase of one cloud formation could be determined
2	Phases of two cloud formations could be determined
3	Phases of three cloud formations could be determined
4	The cloud phases could not be determined

Enumeration FLG_DAYNIT

FLG_DAYNIT	Discrimination between day and night	Enumerated, length: 1 Byte
Value	Meaning
0	Day
1	Night
2	Twilight

Enumeration FLG_IASICLR

FLG_IASICLR	IASI IFOV clear, partly cloudy or cloudy	Enumerated, length: 1 Byte
Value	Meaning
0	The IASI IFOV is clear
1	The IASI IFOV is partly cloudy
2	The IASI IFOV is completely cloudy

Enumeration FLG_ITCONV

FLG_ITCONV	Convergence of the iterative retrieval	Enumerated, length: 1 Byte
Value	Meaning
0	The iteration did not converge, sounding rejected
1	Iteration did not converge, sounding accepted
2	Iteration converged, sounding accepted

Enumeration FLG_ITRBOU

FLG_ITRBOU	Validation of iterated state vector	Enumerated, length: 1 Byte
Value	Meaning
0	Iteration did not exceed valid bounds
1	Iterated state vector exceeds valid bounds

Enumeration FLG_LANSEA

FLG_LANSEA	Specifies surface type	Enumerated, length: 1 Byte
Value	Meaning
0	The IASI IFOV is completely covered by water
1	The IASI IFOV is completely covered by land, the variability of the surface topography is low
2	The IASI IFOV is completely covered by land, the variability of the surface topography is high
3	The IASI IFOV covers land and water, the variability of the surface topography is low
4	The IASI IFOV covers land and water, the variability of the surface topography is high

U-Byte FLG_NUMIT

FLG_NUMIT	Number of iterations used for retrieval	U-byte, length: 1 Byte
Value	Meaning
0	No iterations
N	Number of iterations of the retrieval

Enumeration FLG_NWPBAD

FLG_NWPBAD	Validation flag of NWP forecast	Enumerated, length: 1 Byte
Value	Meaning
0	NWP data are normal and complete
1	NWP data are normal but incomplete
2	NWP data have out of bounds values, adjacent values could be assigned
3	NWP data are corrupted or missing and could be partly used only
4	NWP data are corrupted or missing and could not be used
5	NWP data are not available

Enumeration FLG_QUAL

FLG_QUAL	Quality and completeness of the retrieval	Enumerated, length: 1 Byte
Value	Meaning
0	No successful retrieval
1	Complete retrieval, errors within EURD objective
2	Incomplete retrieval, errors within EURD objective
3	Complete retrieval, errors within EURD threshold
4	Incomplete retrieval, errors within EURD threshold
5	Complete retrieval, errors outside EURD threshold
6	Incomplete retrieval, errors outside EURD threshold

Enumeration FLG_RESID

FLG_RESID	Retrieval residual acceptance flag	Enumerated, length: 1 Byte
Value	Meaning
0	Residual check was not passed, sounding rejected
1	Residual check passed, sounding accepted

Enumeration FLG_SATMAN

FLG_SATMAN	Indication of satellite manoeuvre	Enumerated, length: 1 Byte
Value	Meaning
0	The platform is not undergoing a manoeuvre
1	The platform is undergoing a manoeuvre, nominal processing
2	The platform is undergoing a manoeuvre, no processing

Enumeration FLG_SELBAC

FLG_SELBAC	Selection of background state	Enumerated, length: 1 Byte
Value	Meaning
0	No background state vector selected
1	ATOVS level 2 selected as background state vector
2	Climatology selected as background state vector
3	NWP forecast selected as background state vector
4	Previous retrieval selected as background state vector

Enumeration FLG_SUNGLNT

FLG_SUNGLNT	Identification of sun glint	Enumerated, length: 1 Byte
Value	Meaning
0	No sun glint
1	IASI observes sun glint

Enumeration FLG_SUPADI

FLG_SUPADI	Indication of super-adiabatic conditions in final retrieval	Enumerated, length: 1 Byte
Value	Meaning
0	No super adiabatic layering
N	Super-adiabatic conditions in N layers

Enumeration FLG_SUPSAT

FLG_SUPSAT	Indication of super-saturation in final retrieval	Enumerated, length: 1 Byte
Value	Meaning
0	No super saturation of water vapour
N	Super-saturation at N levels

Enumeration FLG_THICIR

FLG_THICIR	Thin cirrus cloud test	Enumerated, length: 1 Byte
Value	Meaning
0	No thin cirrus detected
1	Thin cirrus detected
2	Test failed or not executed

Enumeration FLG_THICOR

FLG_THICOR	Thin cirrus cloud test	Enumerated, length: 1 Byte
Value	Meaning
0	The IASI data have not been corrected
1	The IASI data have been corrected for thin cirrus

Enumeration FLG_VARCLR

FLG_VARCLR	Cloud clearing by variational analysis	Enumerated, length: 1 Byte
Value	Meaning
0	The IASI IFOV has been initialised for variational cloud clearing
1	The IASI IFOV has not been initialised for variational cloud clearing

Bitfield NAVIGATION_STATUS

Length 4 bytes

NAVIGATION_STATUS		Bit string, length: 4 Byte
Value	Meaning
31 - 17	not used	15
16	If bit set to 1, Earth location corrected for Euler angles	1
15 - 12	Earth location indicator, if value: 0 = Earth location available, 1 = user ephemeris files older than 24 hours, 2 = no earth location available	4
11 - 8	Spacecraft attitude control, if value 0 = NOMINAL mode, 1 = operating in another mode, 2 = attitude exceeds nominal tolerance, 3 = operating in another mode and attitude exceeds nominal tolerance	4
7 - 4	Attitude SMODE: TBC	4
3 - 0	Attitude mode: TBC	4
Total		32

Bitfield FLG_ATOVCLR

Length 1 bytes

FLG_ATOVCLR	Cloud flag for ATOVS products	Bit string, length: 1 Byte
Value	Meaning
0 (all Bits set to 0)	ATOVS L2 is cloud-free
Bit 0 = 1	ATOVS L2 is partly cloudy
Bit 1 = 1	ATOVS L2 is completely cloudy
Bit 2 = 1	ATOVS L2 cloud information is incomplete
Bit 3 - 7 = 0	not used

Bitfield FLG_ATOVCMP

Length 1 byte

FLG_ATOVCMP	Completeness of ATOVS products	Bit string, length: 1 Byte
Value	Meaning
0 (all Bits set to 0)	ATOVS product is complete
Bit 0 = 1	AMSU-A1 level 1 is incomplete
Bit 1 = 1	AMSU-A2 level 1 is incomplete
Bit 2 = 1	MHS level 1 is incomplete
Bit 3 = 1	ATOVS level 2 is incomplete
Bit 4 - 7 = 0	not used

Bitfield FLG_ATOVINT

Length 3 bytes

FLG_ATOVINT	Interpolation of ATOVS to IASI	Bit string, length: 3 Byte
Value	Meaning
Bit 0 = 1	ATOVS Level 2 data are not available
Bit 1 = 1	ATOVS Level 2 data are incomplete
Bit 2 = 1	ATOVS Level 2 data from a single sounding are very close to the IASI IFOV and have been selected to match it
Bit 3 = 1	ATOVS Level 2 data from three or more soundings have been interpolated to the IASI IFOV
Bit 4 = 1	ATOVS Level 2 data from two soundings have been averaged to the IASI IFOV
Bit 5 = 1	ATOVS Level 2 data from a single sounding, not very close to the IASI IFOV have been selected to match the IASI IFOV since no other soundings are available for an interpolation.
Bit 6 = 1	AMSU-A Level 1 data are not available
Bit 7 = 1	AMSU-A Level 1 data are incomplete for cloud detection
Bit 8 = 1	AMSU-A Level 1 data are incomplete for retrieval
Bit 9 = 1	AMSU-A Level 1 data from a single sounding are very close to the IASI IFOV and have been selected to match it
Bit 10 = 1	AMSU-A Level 1 data from three or more soundings have been interpolated to the IASI IFOV
Bit 11 = 1	AMSU-A Level 1 data from two soundings have been averaged to the IASI IFOV
Bit 12 = 1	AMSU-A Level 1 data from a single sounding, not very close to the IASI IFOV have been selected to match the IASI IFOV since no other soundings are available for an interpolation.
Bit 13 = 1	MHS Level 1 data are not available or incomplete for retrieval
Bit 14 = 1	MHS Level 1 data from a single sounding are very close to the IASI IFOV and have been selected to match it
Bit 15 = 1	MHS Level 1 data from three or more soundings have been interpolated to the IASI IFOV
Bit 16 = 1	MHS Level 1 data from two soundings have been averaged to the IASI IFOV
Bit 17 = 1	MHS Level 1 data from a single sounding, not very close to the IASI IFOV have been selected to match the IASI IFOV since no other soundings are available for an interpolation.
Bit 18 - 23 = 0	not used

Bitfield FLG_AVHBAD