Aug 2026· Journal of Geophysical Research - Atmospheres· Vol 131· 0 citations· 45 references
Abstract
The diurnal cycle of ocean surface wind reflects the daily response of air–sea thermal and dynamical processes. Using 1‐hr wind speed data from the Cyclone Global Navigation Satellite System (CYGNSS, 2018–2024), this study refines the characterization of tropical ocean diurnal winds and evaluates their consistency with ERA5 reanalysis. Compared with conventional 6‐hourly satellite records, the hourly sampling of CYGNSS provides sufficient temporal coverage for harmonic fitting, yielding diurnal phase estimates with sub‐hour precision and revealing coherent nighttime wind maxima between 23:00 and 06:00 local time. Both data sets show stronger amplitudes near coasts, straits, and bays, and weaker but detectable signals over open oceans. ERA5 amplitudes are approximately 1.4 times those derived from CYGNSS, with a correlation of 0.75 and a root‐mean‐square phase difference of 1.54 hr. Notably, strong diurnal signals frequently appear in regions lacking buoy observations, highlighting the importance of spaceborne measurements. By providing independent, all‐weather, and high‐frequency observations, CYGNSS offers a unique capability for resolving global diurnal wind variability and validating model‐based reanalysis.
West Africa is the largest global source of mineral dust, with significant impacts on climate, air quality, and biogeochemical cycles. While temporal variations in dust loading from daily to interannual scales are well studied, the long‐term evolution of the diurnal cycle itself is often overlooked. Here, we investigat...
Xiao-Han Li, P. Ginoux· Geophysical Research Letters· 0 citations
Abstract. Glacier and valley winds are characteristic features of the microclimate of glacierised valleys. The speed of such winds influences the turbulent heat flux, which contributes to ice melt significantly. Sparse in-situ meteorological measurements and the inability of large-scale climate data products to capture...
J. Krishnanand, A. Banerjee, R. Shankar et al.· The Cryosphere· 0 citations
A global climatology of diurnal tides in the mesosphere and lower thermosphere (MLT) is constructed using multiyear observations from fifteen meteor radars distributed worldwide. The results show that diurnal tidal amplitudes are strongest at low and mid-latitudes (10–50° N/S), with peak values of about 60 m s
−1
n...
W. Yi, Jian-Yuan Wang, X. Xue et al.· Atmospheric Chemistry and Ph...· 0 citations
Atmospheric rivers (ARs) influence weather and climate along the North American west coast, yet their effects on Pacific Northwest (PNW) surface temperatures remain unclear across seasons and synoptic configurations. Motivated by the 2021 PNW heatwave—which was preceded by a poleward‐tracking AR—we analyze how ARs modu...
P. Goddard, T. O'Brien, Y. Zhou et al.· Journal of Geophysical Resea...· 0 citations
This study examines multiscale controls on the diurnal cycle of precipitation over Timika, southern Papua, where coastal processes, steep orography, and large‐scale tropical variability interact within a narrow coastal‐to‐mountain transition zone. Rainfall peak timing is identified using ground‐based gauge observatio...
Dony Christianto, R. S. Plant, T. Stein et al.· Quarterly Journal of the Roy...· 0 citations
Aerosol properties and effects vary by region because of emission sources, meteorological conditions, topography, elevation, and land–sea interaction. These factors can produce substantial aerosol changes within a day, rendering it important to study the aerosol diurnal behavior. Using available 2015–2025 observations...
