Estimating Wind Direction and Wind Speed Over Lakes With Surface Water Ocean Topography and Sentinel‐1 Satellite Observations

Earth and Space Science, Journal Year: 2025, Volume and Issue: 12(3)

Published: March 1, 2025

Abstract Wind at the water‐air interface is an important driver of hydrologic and biogeochemical processes in lakes. Satellite synthetic aperture radar (SAR) commonly used over ocean to retrieve wind fields using backscatter coefficients which are sensitive wind‐driven surface water roughness; however, its application lakes has been largely unexplored. Here we assess utility SAR specifically for We estimated direction from Modified Local Gradient method Surface Water Ocean Topography (SWOT) Sentinel‐1 data. The was then as input into a C‐band geophysical modeling function (GMF) invert speed Comparisons between SWOT situ speeds were provide foundation understanding how could be study speeds. Using buoy data validation, found (1 km) mean absolute error (MAE) ranged 31° 40° 28° 38° SWOT. (100 m) MAE 1.05 2.09 m/s. These retrievals more accurate higher resolution compared global reanalysis dataset ERA5 (0.25°), with 23° 50° 1.49 2.35 sensitivity depended on incidence angle, demonstrated developing GMF methods better understand dynamics globally, especially small poor regions.

Language: Английский

The Once and Future Hydrology Is Whole Earth Hydrology

Perspectives of Earth and Space Scientists, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 8, 2025

Abstract We here argue for a new paradigm to advance pursuit of truth in global freshwater science. Our proposed Whole Earth Hydrology is hydrology that explicitly empirical and discovery‐based, grounded primary data, detailed at scale, incorporates humans as essential. Empiricism rational response the limits rationality basis hydrologic embrace fieldwork, machine learning, parsimonious modeling (provided parameters are, most, circumspectly interpreted) so long they are pointed common goal: fundamental understanding scales meaningful ecosystems hydrosphere where human alteration norm, not exception. The once future is, we hope, one first measure, then reliably robustly predict, begin unravel truth.

Language: Английский

A novel Multiple Persistent Peaks (MPP) retracker to improve global inland water level monitoring from satellite radar altimetry

Remote Sensing of Environment, Journal Year: 2025, Volume and Issue: 324, P. 114744 - 114744

Published: April 11, 2025

Language: Английский