Tuesday, December 24, 2024
banner

Related Posts

Decoding atmospheric effects of gravity waves with high-res climate simulations


Decoding atmospheric effects of gravity waves with high-res climate simulations
Seen from the International Space Station, gravity waves take shape over Lake Superior when moisture-heavy air encounters air density imbalances, causing airflow to oscillate up and down. Credit: NASA/ISS

Researchers at Stanford University, the European Center for Medium-Range Weather Forecasts, or ECMWF, and Oak Ridge National Laboratory used the lab’s Summit supercomputer to better understand atmospheric gravity waves, which influence significant weather patterns that are difficult to forecast.

First, the team conducted ultrahigh-resolution climate simulations using the ECMWF Integrated Forecast System on Summit. Then they used a decomposition method to extract gravity-wave momentum fluxes that transport energy from atmospheric circulation.

“Detailed data on gravity waves are challenging to obtain from satellites, and simulating them at kilometer-scale resolutions is computationally very expensive,” said ORNL researcher Valentine Anantharaj. “Our simulations and analyses reveal gravity wave mechanics when direct observations lack sufficient frequency and detail.”

The results, validated using reanalyzed historical weather data, offer nearly twice the detail of previous studies. The high-resolution value-added data will support training of advanced machine learning models to improve forecasting of extreme weather events. The research is published in the journal Scientific Data.

More information:
Aman Gupta et al, Gravity Wave Momentum Fluxes from 1 km Global ECMWF Integrated Forecast System, Scientific Data (2024). DOI: 10.1038/s41597-024-03699-x

Citation:
Decoding atmospheric effects of gravity waves with high-res climate simulations (2024, December 23)
retrieved 24 December 2024
from https://phys.org/news/2024-12-decoding-atmospheric-effects-gravity-high.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.





Source link

LEAVE A REPLY

Please enter your comment!
Please enter your name here