MORSE .rtv File

25APR24
Description
Retrieved parameters, uncertainties and diagnostics

Structure
Common File Format

The profile data will be on one of the following grids:
Size Description
NLEV Full set of profile levels[1]
NLVPRF[i] Specific subset of profile levels for species i
1 Scalar quantity (implied by NLVPRF[i]=0)
Note the distinction between NLVPRF[i]=0 and 1. The former indicates a scalar quantity or a full column retrieval, while the latter indicates a retrieval at a single profile level, with the perturbation bounded by top and bottom levels of NLEV [tbc]

The file contains the following profiles or scalars
Data Size Description Units Condition
rtv(:) NLVPRF Profile values for each retrieved species rtv [various]
rtv_SD(:) NLVPRF Profile SD values for each retrieved species rtv [2] [various]
rtv_RES(:) NLVPRF Vertical resolution of species rtv [3]
HGT(:) NLEV Profile altitude levels km Limb-viewing
PRE(:) NLEV Profile pressure levels hPa If pressure profile not also retrieved product
CLD_FLG(:) NLEV Cloud Flags (1=cloudy) Limb-viewing + CLD flag
rtv_DFS 1 Degrees of Freedom for Signal for species rtv DFS flag
rtv_INF 1 Information content of retrieval rtv bits INF flag
N_SEQRTV 1 No. Sequential retrievals performed STT flag
N_NOTCNV 1 No. Retrievals not converged STT flag
N_ITER 1 STT flag
CHISQ 1 STT flag

Notes
  1. NLEV (in the Common File Header) is defined by the number of retrieval grid levels (GRD) set in the IN *RTV section of the driver file

  2. The profile SD values are in the same units as the profile values, and are derived from the square roots of the diagonal elements of the retrieval error covariance matrix, i.e., a combination of instrument random noise and a priori uncertainty.

  3. The vertical resolution is expressed as a multiple of the profile spacing at each level. It is the inverse of the diagonal element of the associated element of the averaging kernel matrix

Examples
morse_pt.orb from MIPAS pT retrieval