U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Ocean Surface Flux Algorithm Effects on Tropical Indo‐Pacific Intraseasonal Precipitation

Supporting Files


Details

  • Journal Title:
    Geophysical Research Letters
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    Surface latent heat fluxes help maintain tropical intraseasonal precipitation. We develop a latent heat flux diagnostic that depicts how latent heat fluxes vary with the near-surface specific humidity vertical gradient (Δq) and surface wind speed (|V|). Compared to fluxes estimated from |V| and Δq measured at tropical moorings and the Coupled Ocean Atmosphere Response Experiment 3.0 (COARE3.0) algorithm, tropical latent heat fluxes in the National Center for Atmospheric Research CEMS2 and Department of Energy E3SMv1 models are significantly overestimated at |V| and Δq extrema. Madden–Julian oscillation (MJO) sensitivity to surface flux algorithm is tested with offline and inline flux corrections. The offline correction adjusts model output fluxes toward mooring-estimated fluxes; the inline correction replaces the original bulk flux algorithm with the COARE3.0 algorithm in atmosphere-only simulations of each model. Both corrections indicate reduced latent heat flux feedback to intraseasonal precipitation, in better agreement with observations, suggesting that model-simulated fluxes are overly supportive for maintaining MJO convection.
  • Content Notes:
    DeMott also received support from NOAA MAPP NA20OAR4310389.
  • Keywords:
  • Source:
    Geophysical Research Letters, 49(7)
  • DOI:
  • ISSN:
    0094-8276 ; 1944-8007
  • Format:
    PDF
  • Publisher:
    American Geophysical Union (AGU)
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA20OAR4310389
  • License:
  • Rights Information:
    CC BY-NC-ND
  • Compliance:
    CHORUS
  • Main Document Checksum:
    urn:sha-512:7cdbf8c6d46b2fa8095337c5830beaee340238ed2a1fd4d6764978b61d4787f6e31837e96f12af018729c261d321304d0091687d112731ef36e3d9b015480c9d
  • Download URL:
  • File Type:
    Filetype[PDF - 2.70 MB ]
PREVIOUS
ON THIS PAGE
Details Supporting Files
The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP