Results 231 to 240 of about 1,602,454 (306)

Structural changes in the interannual variability of extreme autumn precipitation in eastern Spain and the weakening of synoptic forcing

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Total autumn precipitation in eastern Spain remains stable between 1950 and 2024, masking a substantial internal redistribution between ordinary and extreme rainfall. While torrential precipitation (Rp95) increases and ordinary precipitation (Ro) decreases, the extreme contribution index (Cext) shows a significant positive trend and a structural shift ...
Eduardo A. Agosta, David Corell, Juan J. Miró, María José Estrela   +3 more
wiley   +1 more source

Spring leaf-out keeps pace with warming across the Northern Hemisphere

Zohner C, Wu Z, Mo L, Crowther T, Fu Y, Renner S, Vitasse Y, Rebindaine D.   +7 more
europepmc   +1 more source

Determining the cause of inconsistent onset-season trends in the Northern Hemisphere snow cover extent record. [PDF]

Sci Adv
Elias Chereque A, Kushner PJ, Mudryk L, Derksen C.   +3 more
europepmc   +1 more source

A new scale‐selective measure of curvature for meteorological fields

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We introduce a novel diagnostic called curvature using radial variation (CURV) that quantifies the local cyclonic or anticyclonic curvature of mean‐sea‐level pressure or geopotential height gridded fields over selected scales. A depiction of how CURV values relate to differing cyclonic curvature is shown in the figure.
Nigel Roberts, Timothy Hewson, Anca Brookshaw, Matthieu Chevallier   +3 more
wiley   +1 more source

Volumetric quantifications and dynamics of areas undergoing retrogressive thaw slumping in the Northern Hemisphere. [PDF]

Nat Commun
Dai C, Ward Jones MK, van der Sluijs J, Nesterova N, Howat IM, Liljedahl AK, Higman B, Freymueller JT, Kokelj SV, Sriram S.   +9 more
europepmc   +1 more source

Low‐order system for eddy growth in the storm track

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Reanalysis data for the North Atlantic storm track are used to construct a low‐order model that optimally fits the observed interaction between the mean flow and baroclinic eddies. The resulting model is a certain type of predator–prey model. It explains various properties of the storm track, including why eddies grow linearly with the Eady growth rate,
Maarten H. P. Ambaum, Thomas H. A. Frame
wiley   +1 more source

Blocking diversity causes distinct roles of diabatic heating in the Northern Hemisphere. [PDF]

Nat Commun
Liu Z, Wang L.
europepmc   +1 more source

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi, Thomas Gastaldo, Virginia Poli, Chiara Marsigli, Tijana Janjic, Alberto Carrassi   +5 more
wiley   +1 more source

Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the late Miocene. [PDF]

Nat Commun
Vaks A, Mason A, Breitenbach SFM, Giesche A, Osinzev A, Adrian I, Kononov A, Umbo S, Lechleitner FA, Rosensaft M, Henderson GM.   +10 more
europepmc   +1 more source

Evaluation of a stochastically perturbed parametrisations scheme for sea ice in sub‐seasonal forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Overconfident sea ice forecasts pose a challenge in subseasonal prediction. To test a potential way to address this issue and account for sea ice model uncertainty, this article investigates a stochastically perturbed parametrisations (SPP) scheme for sea ice in a prototype CY49R2 configuration of the coupled IFS‐NEMO4‐SI3 system. The results show that
Jonas Spaeth, Steffen Tietsche, Kristian Strommen, Michael Mayer, Andrea Storto, Christopher D. Roberts, Sarah‐Jane Lock, Sarah Keeley   +7 more
wiley   +1 more source