Implementation and demonstration of the CLM lake model in the NOAA Unified Forecasting System (UFS)

Trahan, Samuel G.; Smirnova, Tatiana G.; Benjamin, Stanley G.; Kenyon, Jaymes S.

doi:10.25923/8srx-pm39

i

Implementation and demonstration of the CLM lake model in the NOAA Unified Forecasting System (UFS)

2025
By Trahan, Samuel G. ; Smirnova, Tatiana G. ; Benjamin, Stanley G. ; ...
Series: NOAA technical memorandum OAR GSL 75

Details

Personal Author:

Trahan, Samuel G. ; Smirnova, Tatiana G. ; Benjamin, Stanley G. ; Kenyon, Jaymes S.
Corporate Authors:

Global Systems Laboratory (U.S.)
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GSL (Global Systems Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

A 1D lake model was implemented into the NOAA Unified Forecast System and its regional model, the Rapid Refresh Forecast System (RRFS). The CLM (Community Land Model) lake model was tested in an experimental version of the RRFS (RRFS version 1). Our experimental control is RRFS with a global sea-surface temperature field and no lake model. This was compared to RRFS with the CLM 1D lake model initialized with cycled lake temperatures. The RRFS with the CLM 1D lake model shows improved 2-m temperature and 2-m dewpoint forecasts over the control. These tests were carried out for both winter and summer periods. The use of the CLM 1D lake model and lake temperature initialization via cycling had previously been found to be effective for the NOAA HRRR model version 4. Its application to RRFS is now confirmed to also be able to improve surface predictions in the vicinity of the lakes.
Keywords:

Computer Simulation Evaluation Lakes Mathematical Models Numerical Weather Forecasting Computer Simulation Mathematical Models Numerical Weather Forecasting
Series:

NOAA technical memorandum OAR GSL 75
DOI:

https://doi.org/10.25923/8srx-pm39
Format:

pdf
Document Type:

Technical Memorandum
Place as Subject:

United States
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:95b203cd604c0f8f52835a913f1421988312d3c0dca7f760a0aa05148c7ce8d18679ea9bf80276bb4d33507908db8f35c5344486862b6f0b488f79d200d517b7
Download URL:

https://repository.library.noaa.gov/view/noaa/71188/noaa_71188_DS1.pdf
File Type:

[PDF - 5.43 MB ]

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