Thursday, May 19, 2022
SCIENMAG: Latest Science and Health News
No Result
View All Result
  • Login
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
No Result
View All Result
Scienmag - Latest science news from science magazine
No Result
View All Result
Home SCIENCE NEWS Technology and Engineering

CMIP6 models have improved in simulating sea surface salinity and freshwater flux

March 18, 2022
in Technology and Engineering
0
Share on FacebookShare on Twitter

Salinity changes the ocean stratification by affecting the density, which has a certain impact on the thermodynamic processes of the ocean, and then modulates sea surface salinity variations. With the development of numerical models in recent years, climate models have become an important tool for studying the mechanism of climate change and predicting climate change. It is feasible and necessary to study the underlay mechanisms of variation in El Niño–Southern Oscillation (ENSO) by examining the temporal and spatial characteristics of sea surface salinity in the tropical Pacific. The Coupled Model Intercomparison Projects (CMIPs) were initiated by the Working Group on Coupled Modeling (WGCM) of the World Climate Research Program (WCRP) in 1995. With the rapid development and growth of global ocean–atmosphere models, the CMIPs provide the basis for multimodel assessments that reveal differences between models and observations.

Relationship between sea surface salinity anomalies, sea surface temperature anomalies, and freshwater flux anomalies in the tropical Pacific. The sea surface salinity anomalies in the tropical western Pacific correspond to SST anomalies in the equatorial eastern Pacific, while the sea surface salinity anomalies correspond to precipitation and evaporation anomalies during ENSO. The blue area indicates sea surface salinity anomalies and the red sea surface temperature anomalies.

Credit: Hai Zhi

Salinity changes the ocean stratification by affecting the density, which has a certain impact on the thermodynamic processes of the ocean, and then modulates sea surface salinity variations. With the development of numerical models in recent years, climate models have become an important tool for studying the mechanism of climate change and predicting climate change. It is feasible and necessary to study the underlay mechanisms of variation in El Niño–Southern Oscillation (ENSO) by examining the temporal and spatial characteristics of sea surface salinity in the tropical Pacific. The Coupled Model Intercomparison Projects (CMIPs) were initiated by the Working Group on Coupled Modeling (WGCM) of the World Climate Research Program (WCRP) in 1995. With the rapid development and growth of global ocean–atmosphere models, the CMIPs provide the basis for multimodel assessments that reveal differences between models and observations.

With Prof. Hai Zhi from Nanjing University of Information Science and Technology, as the first author, and Prof. Pengfei Lin from the Institute of Atmospheric Physics, Chinese Academy of Sciences, as the corresponding author, led a study in which CMIP data were used to compare model outputs and observations to effectively evaluate model simulations, and to obtain strengths and weaknesses of individual models and the differences between the models. These results have been recently published in Atmospheric and Oceanic Science Letters.

By comparing CMIP5 and CMIP6 simulations of the sea surface salinity and freshwater flux response to ENSO in the tropical Pacific, it is shown that both CMIP5 and CMIP6 can better simulate the spatial distribution of sea surface salinity and freshwater flux variability associated with ENSO. Compared with the CMIP5 models, the interannual variabilities in sea surface salinity and freshwater flux simulated by the CMIP6 models show greater improvement in some regions, correcting the underestimation of the spatial relationship between the variability of sea surface salinity and freshwater flux in the central-western Pacific and ENSO. However, some CMIP6 models overestimate the strength of the interannual variability of sea surface salinity. The CMIP5 and CMIP6 models still have large uncertainties in simulating the interannual variation of sea surface salinity, and the related physical processes need to be improved.

“The results of our study, as part of the evaluation of CMIP, can be used as an assessment of the simulation results of CMIP5- and CMIP6-related models for the interannual vaariabilities in salinity and freshwater flux in the tropical Pacific, and can provide an important reference for the study of the impact of ENSO on global climate”, says Prof. Zhi.



Journal

Atmospheric and Oceanic Science Letters

DOI

10.1016/j.aosl.2022.100190

Article Title

Interannual variability of the sea surface salinity and its related freshwater flux in the tropical Pacific: A comparison of CMIP5 and CMIP6

Article Publication Date

15-Feb-2022

Tags: CMIP6fluxFreshwaterImprovedmodelssalinityseasimulatingsurface
Share26Tweet16Share4ShareSendShare
  • Gladstone scientists Tongcui Ma, Irene Chen, and Rahul Suryawanshi.

    “Natural immunity” from omicron is weak and limited, study finds

    68 shares
    Share 27 Tweet 17
  • Scripps Research awarded $67 million by NIH to lead new Pandemic Preparedness Center

    66 shares
    Share 26 Tweet 17
  • Researchers discover genetic cause of megaesophagus in dogs

    1022 shares
    Share 409 Tweet 256
  • Do early therapies help very young children with or at high likelihood for autism?

    66 shares
    Share 26 Tweet 17
  • Ecological functions of streams and rivers severely affected globally

    71 shares
    Share 28 Tweet 18
  • Null results research now published by major behavioral medicine journal

    310 shares
    Share 124 Tweet 78
ADVERTISEMENT

About us

We bring you the latest science news from best research centers and universities around the world. Check our website.

Latest NEWS

Understanding how sunscreens damage coral

SUTD develops design-based activity to enhance students’ understanding in electrochemistry

New Curtin research resurrects ‘lost’ coral species

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 187 other subscribers

© 2022 Scienmag- Science Magazine: Latest Science News.

No Result
View All Result
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US

© 2022 Scienmag- Science Magazine: Latest Science News.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
Posting....