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Downstream development during ridging South Atlantic Ocean anticyclones
Ridging South Atlantic high pressure systems (ridging highs) are often accompanied by cut-off low (COL) pressure systems aloft, but may also occur...
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Wind energy potential of weather systems affecting South Africa’s Eastern Cape Province
As a percentage of the total global energy supply, wind energy facilities could provide 10% of the total global energy supply by 2050 as reported in...
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A quasi-geostrophic analysis of summertime southern African linear-regime westerly waves
Linear-regime westerly waves that propagate across the South African domain are often linked to well-known rainfall producing systems such as...
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Circulation Pattern Controls of Summer Temperature Anomalies in Southern Africa
This study investigates the relationship between circulation patterns and austral summer temperature anomalies in southern Africa. The results show...
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Improving rainfall simulations over the Drakensberg on weak-synoptic days
Reanalysis is well known for reliable reproduction of weather and climate. However, there is a dearth of information on the reliability of reanalysis...
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Record-high Antarctic Peninsula temperatures and surface melt in February 2022: a compound event with an intense atmospheric river
The Antarctic Peninsula (AP) experienced a new extreme warm event and record-high surface melt in February 2022, rivaling the recent temperature...
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High-elevation snowpack loss during the 2021 Pacific Northwest heat dome amplified by successive spring heatwaves
A heatwave in June 2021 exposed Pacific Northwest (PNW) snowpack to record temperatures, allowing us to probe seasonal snowpack response to...
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Tropical cyclones in the northern Mozambique Channel: composite intra-seasonal forcing and 2019 event
Tropical cyclone (TC) activity in the northern Mozambique Channel (nMC) during the satellite era is studied, culminating with the anomalous 2019...
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Analysis of the Hadley cell, subtropical anticyclones and their effect on South African rainfall
This study investigates the behaviour of subtropical high-pressure systems and the Hadley cell, which affect the weather of South Africa, using the...
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Revisiting the 1992 severe drought episode in South Africa: the role of El Niño in the anomalies of atmospheric circulation types in Africa south of the equator
During strong El Niño events, below-average rainfall is expected in large parts of southern Africa. The 1992 El Niño season was associated with one...
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Classifying moisture sources associated with snowfall in the mountains of Lesotho
An average of eight snowfall events occur each year in the eastern Lesotho Highlands. These snowfall events are typically associated with cut-off low...
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Winter and spring atmospheric rivers in High Mountain Asia: climatology, dynamics, and variability
Atmospheric rivers (ARs) that reach the complex terrain of High Mountain Asia (HMA) cause significant hydrological impacts for millions of people....
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Large-scale mechanisms linked to anomalously wet summers over the southwestern Cape, South Africa
Although on average, the southwestern Cape (SWC) of South Africa is a winter rainfall dominated region, almost 30% of the total rainfall occurs...
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South African winter rainfall zone shifts: A comparison of seasonality metrics for Cape Town from 1841–1899 and 1933–2020
Mounting evidence across South Africa’s southwestern winter rainfall zone (WRZ) reflects consistent drying since ~ 1980, and projected trends suggest...
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North American fire weather catalyzed by the extratropical transition of tropical cyclones
When tropical cyclones in the western North Pacific transition into midlatitude cyclones, it often perturbs the jet stream, resulting in amplified...
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Centripetal Acceleration and the Gradient Wind
When the pressure gradient force and Coriolis effect are imbalanced, the flow does not remain straight but instead curves. The centripetal...
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Circulation Patterns Linked to the Positive Sub-Tropical Indian Ocean Dipole
The positive phase of the subtropical Indian Ocean dipole (SIOD) is one of the climatic modes in the subtropical southern Indian Ocean that...
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Global oscillatory modes in high-end climate modeling and reanalyses
Interannual oscillatory modes, atmospheric and oceanic, are present in several large regions of the globe. We examine here low-frequency variability...
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Winter wet–dry weather patterns driving atmospheric rivers and Santa Ana winds provide evidence for increasing wildfire hazard in California
Floods caused by atmospheric rivers and wildfires fanned by Santa Ana winds are common occurrences in California with devastating societal impacts....
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Cut-off lows in the Southern Hemisphere and their extension to the surface
Many cut-off low (COL) climatologies have been done throughout the Southern Hemisphere. Few have focused on COL vertical depth and their link to...
