Identification

Title

Assimilating precipitation data via full‐hydrometeor scheme in WRF 4D‐Var for convective precipitation forecast associated with the Northeast China cold vortex (NCCV)

Abstract

The full‐hydrometeor four‐dimensional variational (4D‐Var) assimilation scheme in the Weather Research and Forecasting (WRF) model, based on the WRF single‐moment 6‐class microphysics scheme (WSM6), is utilized to assimilate precipitation data. The focus is on short‐term convective precipitation forecasts influenced by the Northeast China cold vortex (NCCV). Four assimilation experiments were designed to compare the warm rain scheme with the full‐hydrometeor scheme, as well as to examine the differences between assimilating hourly surface rain gauge data and multi‐source integrated precipitation products. Nine cases of intense convective precipitation related to NCCV were analyzed. The results demonstrate that the initial analysis of ice‐phase hydrometeors was satisfactory across the three experiments utilizing the full‐hydrometeor 4D‐Var assimilation scheme. The assimilation of precipitation data using the full‐hydrometeor scheme in WRF 4D‐Var effectively adjusted atmospheric thermodynamic properties and decreased model spin‐up time, leading to improved precipitation forecasts, especially for the 0–3 hr period. Furthermore, the assimilation of rain gauge data or multi‐source integrated precipitation data has been demonstrated to be an effective approach for enhancing the accuracy of weather forecasts.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.net/ark:/85065/d7xs60tg

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2025-04-28T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact