Hydrology · Other
New weather and climate research on hydrology whose main contribution is a finding rather than models and methods, observations or AI and machine learning, one page per paper.
All summaries
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HydrologyWater use efficiency first rises, then falls, as drought deepens over 57.5% of vegetated land
Ecosystem water use efficiency rises under mild drought but reverses once drought passes a threshold, so earlier reports of both rises and falls may describe two stages of one response.
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HydrologyDroughts cut Upper Colorado streamflow and raised stream temperature and salinity
In four severe droughts from 1998 to 2022, Upper Colorado River Basin streams ran lower, warmer and saltier, and how much they changed depended on catchment traits such as withdrawals, forest cover and baseflow.
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HydrologyItalian snow droughts cut summer runoff by about half, raise high-elevation plant growth and strain water supply
In 38 Italian mountain catchments, snow droughts, mostly warm and dry, shortened the snow season, roughly halved summer runoff, boosted high-elevation plant productivity, and hit water supply from huts to foothills.
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HydrologyFlood waves take about 17 months to travel from Lake Victoria to the Sudd
Tracking individual flood peaks shows the White Nile moves a Lake Victoria flood to the Sudd wetland in about 17 months, not the four to five months that seasonal timing suggests.
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HydrologyDepleted groundwater made the 2022 Po River drought far worse than rainfall alone explains
In the 2022 Po drought, an aquifer already drained before the dry year appears to have amplified the river's collapse and kept hydrological drought going long after rainfall indices recovered.
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HydrologyFrench river projections: emissions drive low-flow loss, while internal variability stays large
In a large ensemble of French river projections, low flows fall in the south under high emissions, but changes in mean and high flows are very uncertain, and natural year-to-year variability is often as large as the model spread.
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HydrologySwiss glaciers cushioned the 2022 drought, but total meltwater was lower than in 2003
In the 2022 drought, extra glacier melt offset water deficits in catchments with around 15 % glacier cover, yet shrinking glacier area meant total meltwater was already below the 2003 level in most catchments.
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HydrologyAgricultural expansion aggravates water shortage more than climate change
Agricultural land expansion, not climate change, is the primary driver of intensifying water crises in arid regions.
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HydrologySoil moisture falls as precipitation rises in some dry and cold Northern Hemisphere regions
In parts of the Northern Hemisphere, mostly deserts, montane shrublands and tundra, soil moisture can be negatively tied to precipitation, and temperature and vegetation productivity help explain it.
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HydrologySoil salt area in a dry Chinese river basin held steady while salt severity rose
Satellite maps of the Shiyang River basin from 2002 to 2022 show the salty area changed little overall, but salinization got more severe near reservoirs, irrigated land and downstream water-input zones.