Code Table 4.2 : new entry for hydrology

[sebvi]

Initial request

ECMWF is requesting new hydrological parameters in discipline 1 - hydrology

Amendment details

ADD new entries to code table 4.2

Name	Product Discipline	Parameter Category	proposed Parameter Number	Units
Lake depth	1	2	15	m
River depth	1	2	16	m
River outflow of water	1	0	17	m3 s-1
Floodplain outflow of water	1	0	18	m3 s-1
Floodpath outflow of water	1	0	19	m3 s-1

Comments

No response

Requestor(s)

Robert Osinski (ECMWF)
Sebastien Villaume (ECMWF)

Stakeholder(s)

ECMWF

Publication(s)

Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 1, category 0
Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 1, category 2

Expected impact of change

None

Collaborators

No response

References

No response

Validation

No response

[amilan17]

https://github.com/wmo-im/CCT/wiki/Teleconference.6.7.June.2023 

@sebvi add samples and update branch; @amilan17 share with WMO hydro colleagues for review;

Jeff was wondering what a "floodpath" is...

[jbathegit]

Jeff was wondering what a "floodpath" is...

And also how it differs from a flood plain. I know what a flood plain is, but I'm not familiar with the term "flood path" or how that differs from a flood plain ;-)

[sebvi]

Branch updated, I am gathering facts about floodplain vs floodpath

[sebvi]

Floodplain: A flood plain is an area of flat land alongside a river. This area gets covered in water when the river floods. Flood plains are naturally very fertile due to the river sediment which is deposited there.
Floodpath: The term "flowpath" is commonly used to refer to the path or route taken by water as it moves across the landscape during a flood event. In the context of our model , the term is used for river bifurcations. The variable 'floodpath outflow' is used to output the flow in the bifurcating river.

[amilan17]

https://github.com/wmo-im/CCT/wiki/Teleconference.13.July.2023 notes:

ready