MORSE .dia File

22JUL25

Description

MORSE Diagnostics file

Type

Optional output file.

Structure

Text file. Formal structure tbd

File Structure
! Diagnostics file for MORSE v.VERSID
! HDRREC
FMT           (= .dia file format version)
NPTMAX     (= Max No.pts in any microwindow)
Then repeat for each iteration ...
! -------------------------
IPIX   IMIC   ISWP   ITER   MICLAB   STATUS   = Pixel#, MW#, Sweep#, Iter#, MW label
CHI2X   CHI2Y   GAMMA   NX   NY   = Chi2X, Chi2Y, Gamma, NX, NY
NMEAS   NTRUE   OFFSET   NESR   ALT   = NMeas, Ntrue, Offset, NESR, Alt
Meas
MEAS(1) MEAS(2) ...
... MEAS(NMEAS)
Masks
MASK(1) MASK(2) ...
... MASK(NMEAS)
Y vec
Y(1) Y(2) ...
... Y(NY)
Y-F vec
DY(1) DY(2) ...
... DY(NY)
NRTV     = N.Rtv
For i = 1, NRTV Repeat for each retrieved product
*RTV(i)
NLVRTV(i) = N.Lev
! ix ilv iatm z[km] x a x_sd a_sd
For ix = ix1, ix2 Repeat for each state vector element connected with retrieved product i
IX ILV(ix) IATM(ix) Z(ix) X(ix) A(ix) X_SD(ix) A_SD(ix)

Data Dictionary

Field	Format	Description	Units	Range
A(NX)	E10.2	A Priori Vector	[various]
A_SD(NX)	E10.2	SD of A Priori Vector	[various]
ALT	E10.2	Sweep tangent altitude	km	≥0 usually, 0 for nadir
CHI2X	E10.2	χ2 value for state vector		≥ 0
CHI2Y	E10.2	χ2 value for measurement vector		≥ 0
DY(NY)	E10.2	Vector of (meas-forward model) differences	R.U.
FMT	F5.2	.dia file format identifier		0.01
GAMMA	E10.2	Levenberg-Marquardt damping parameter		≥ 1
HDRREC	C79	Copied from *HDR section of the driver table
IATM(NLVRTV)	I4	Index of level in atmospheric profile		1:NATM
ILV(NLVRTV)	I4	Index of level in species retrieval profile		1:NLVRTV
IMIC	I4	Microwindow#		1:NMic
IPIX	I4	Pixel#		1:NPix
ISWP	I4	Sweep#		1:NSwp
ITER	I4	Iteration#		1:MAXITR
IX	I4	Index in state vector		1:NX
MEAS(NMEAS)	E10.2	Full list of measurements in Microwindow	R.U.
MASK (NMEAS)	I2	List of logical masks (1=use meas.)		1 or 0
MICLAB(NMIC)	2X, C8	Microwindow Label, eg 'NH3_0001'
NESR	E10.2	Radiometric noise	R.U.	> 0
NLVRTV(NRTV)	I*	No. profile levels for species i		> 0
NMEAS	I4	Total no. spectral points in microwindow (including masked points)		≥ NY
NPTMAX	I5	Max no. spectral points in any microwindow		> 0
NRTV	I	No. different retrieval products		> 0
NTRUE	I4	Total used spectral points in microwindow (=NY = ∑MASK)		1 ≥ : ≥ NMEAS
NX	I5	No.elements in state vector		≥ 1
NY	I5	No.elements in measurement vector		≥ 1
OFFSET	E10.2	Radiometric offset	R.U.
*RTV(NRTV)	Cn	Retrieved species, preceded by '*', eg '*H2O'
STATUS	2X, C7	Status		∈{'ITERATE', 'CONVRGD', 'STOPPED'}
VERSID	C11	MORSE version identifier, eg '27APR23'
X(NX)	E10.2	State Vector	K, hPa or ppmv
X_SD(NX)	E10.2	SD of State Vector elements	[same as X]
Y(NY)	E10.2	Vector of measurements used in microwindow	R.U.
Z(NLVRTV)	F8.2	Altitude of retrieved profile level	km

Example

morse.dia

Python Reader

read_dia.py

• MORSE Index