Analysis with the augmented control variable for the skin tempererature analysis (summer 2019)

Title Analysis with the augmented control variable for the skin tempererature analysis (summer 2019)
Description Analysis experiement with the IFS cycle 47R1, on a cubic horizontal grid with a 399 spectral truncature, and 137 vertical levels. The skin temperature analysis for the assimilation of the radiance is realised with the augmented control variable. Experiment described as SKTACV in Massart et al. (2021) to be compared to the reference experiment hg65. The skin temperature analysis is stored in the 4v fields, parameter 90. Infrared fields: model levels 14 to 26 (step 0-13, time 09Z or 18Z). Microwave fields: model levels 27 to 39 (step 0-13, time 09Z or 18Z). Period of interest: 1 July 2019 to 30 September 2019.
DOI 10.21957/vv2s-7h56
Experiment ID hg66
Experiment class ECMWF Research Department
Examples

Infrared skin temperature analysis time 09:00Z step 0 for 1 July 2019

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer

server = ECMWFDataServer()

server.retrieve({
    "anoffset": "12",
    "class": "rd",
    "dataset": "research",
    "date": "2019-07-01",
    "expver": "hg66",
    "levelist": "14",
    "levtype": "ml",
    "param": "90",
    "step": "0",
    "stream": "lwda",
    "target": "output.grib",
    "time": "09:00:00",
    "type": "4v"
})

METOP-A AMSUA ODB file for the 1 July 2019 00:00Z analysis 

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2019-07-01",
    "expver": "hg66",
    "reportype": "1007",
    "stream": "lwda",
    "target": "output.grib",
    "time": "00:00:00",
    "type": "mfb"
})