Dropsonde data denial study for 2019 Atmospheric Rivers campaign

Title Dropsonde data denial study for 2019 Atmospheric Rivers campaign
Description noDropsonde experiment (other all usual observation types assimilated) for Observing System Experiment (OSE) looking at ARs affecting western USA DeHaan et al (2023). Experiment from 2019-01-28 to 2019-04-30, control is h4qi.
DOI 10.21957/wk8a-a783
Experiment ID h4ss
Experiment class ECMWF Research Department
Examples

Forecast fields for u-wind @250 hPa, step gives forecast range in hours

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

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2019-01-30",
    "expver": "h4ss",
    "levellist": "250",
    "levtype": "pl",
    "param": "131",
    "step": "0/12/24/48",
    "stream": "lwda",
    "target": "output.grib",
    "time": "00:00:00",
    "type": "fc"
})

Analysis fields for u-wind and v-wind @250 hPa

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

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2019-01-28",
    "expver": "h4ss",
    "levelist": "250",
    "levtype": "pl",
    "param": "131/132",
    "stream": "lwda",
    "target": "output.grib",
    "time": "00:00:00",
    "type": "an"
})