Live: Collect 10 NWP variables

[peterdudfield]

Detailed Description

Update NWP to collect the following variables

• lcc : Low-level cloud cover in %.
• mcc : Medium-level cloud cover in %.
• hcc : High-level cloud cover in %.
• sde : Snow depth in meters.
• dlwrf : Downward longwave radiation flux - ground
• t : Air temperature at 1 meter above surface in Kelvin.
• r : Relative humidty in %.
• vis : Visibility in meters.
• si10 : Wind speed in meters per second, 10 meters above surface.
• prate : Precipitation rate at the surface in kg/m^2/s

Currently only 4 are collected

Context

• We currently only collect 4 NWP variables, but it would be useful to collect all 10
• Would be good to first to #20 , so production system doesn't break
• Sometimes they arent named exatactly the same, when they come through the API
• Need to be of GB limits, might have to upgrade our subscription
• We might need this for new national forecast

Possible Implementation

This is done in api of https://metoffice.apiconnect.ibmcloud.com/

Tasks

• [x] Create new order in MetOffice API with extra parameters - https://gridded-data-ui.cda.api.metoffice.gov.uk/order-summary/0cd79040-8570-4a42-8f69-20793f1bed41

[devsjc]

NOTE: snow depth is not measured in meters - from the API configurator:

Liquid water equivalent (LWE) depth of the snow lying on the surface (ground). Typically water is 10 times as dense as snow so multiplying by 10 gives an approximate depth of the snow, although wet snow can be significantly denser and powder snow much less dense. A scaling factor of 1000 is used to convert m (the units received from Science) to kg m-2 (GRIB2 units).

Unit kg m-2

[devsjc]

@peterdudfield The description above asks for downward longwave radiation flux - ground however the current in-use order (of 4 parameters) requests downward shortwave radiation flux at surface - ground. Do we definitely want to swap to longwave?

[devsjc]

Created draft order at https://gridded-data-ui.cda.api.metoffice.gov.uk/order-summary/0cd79040-8570-4a42-8f69-20793f1bed41. Estimated at 33gb/month

[peterdudfield]

I think we should get dswrf, but actually grabbing both could be good