Results 41 to 50 of about 10,278 (196)

Using a causal effect network approach to quantify the impact of ENSO teleconnections on summer monsoon precipitation over the Himalayas and key regional circulations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We quantified the causal effect (CE) of linkages between four monthly climate indices ENSO, SMHP, RWC, and MHC for 1940–2022 with a time lag of one month. The results show CE values from (1) ENSO to SMHP of −0.33$$ -0.33 $$ to −0.44$$ -0.44 $$ (i.e., a one standard deviation (SD) increase in ENSO causes a decrease in SMHP of −0.33$$ -0.33 $$ to −0.44$$
Grzegorz Muszynski, Andrew Orr, Indrani Roy, Giorgia Di Capua, Hamish D. Pritchard, J. Scott Hosking   +5 more
wiley   +1 more source

Performance evaluation of regional weather predictions with the Model for Prediction Across Scales – Atmosphere (MPAS‐A) over the Maritime Continent

Quarterly Journal of the Royal Meteorological Society, EarlyView.
As part of the ongoing efforts to develop next‐generation forecasting systems at the Meteorological Service Singapore, this study presents the setup and evaluation of the SINGV_NG(MPAS) system. Overall, the SINGV_NG(MPAS) system outperforms European Centre for Medium‐Range Weather Forecasts (ECMWF) deterministic forecasts in capturing heavy rainfall ...
I‐Han Chen, Pratiman Patel, Kalli Furtado, Wei Wang, Zhiquan Liu, Dale Barker, Jimy Dudhia, Hugh Zhang   +7 more
wiley   +1 more source

Quantifying transport into the lowermost stratosphere using simultaneous in-situ measurements of SF6 and CO2 [PDF]

, 2008
The seasonality of transport and mixing of air into the lowermost stratosphere (LMS) is studied using distributions of mean age of air and a~mass balance approach, based on in-situ observations of SF6 and CO2 during the SPURT (Spurenstofftransport in der
Birner, Thomas, Bönisch, Harald, Curtius, Joachim, Engel, Andreas, Hoor, Peter   +4 more
core   +3 more sources

A new interpretation of total column BrO during Arctic spring [PDF]

, 2010
Emission of bromine from sea-salt aerosol, frost flowers, ice leads, and snow results in the nearly complete removal of surface ozone during Arctic spring.
Atlas, E L, Bhartia, P K, Blake, D R, Bui, T P, Canty, T, Chance, K, Chen, G, Crawford, J H, da Silva, Arlindo, Dibb, Jack E., Donohue, D, Flocke, F, Gao, R S, Hendrick, F, Huey, L Gregory, Jacob, D J, Johnson, B, Johnston, P V, Kinnison, D, Knapp, D, Kreher, K, Kurosu, T P, Liang, Q, Liao, J, Liu, X, Montzka, D, Neilsen, J E, Neuman, J A, Nowak, J, Oltmans, S J, Pan, L L, Pawson, S, Pierce, R B, Pierce, R Bradley, Rodriguez, J. V., Ryerson, Thomas B, Salawitch, R J, Simpson, W R, Stickel, R E, Tanner, D, Tilmes, S, Van Roozendael, M, Weinheimer, Andrew   +42 more
core   +2 more sources

The relationship between seasonal mean temperature and most extreme day

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In Northern Hemisphere winter, there is a strong correlation between seasonal mean temperature and coldest daily mean temperature which varies in magnitude from one region to another (with a weaker relationship in summer between mean and hottest day).
Anna Maidens, Hazel E. Thornton, Philip Bett‐Williams, Doug Smith   +3 more
wiley   +1 more source

The role of stratosphere-troposphere coupling in the occurrence of extreme winter cold spells over northern Europe

Journal of Advances in Modeling Earth Systems, 2012
Extreme cold spells over Northern Europe during winter are examined in order to address the question to what degree and in which ways stratospheric dynamics may influence the state of the troposphere.
Lorenzo Tomassini, Mark P. Baldwin, Felix Bunzel, Marco Giorgetta   +3 more
doaj  

The non‐hydrostatic option of the ECMWF global weather forecast model: Improvements for kilometre‐scale modelling

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study presents improvements to the non‐hydrostatic version of the European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), enabling stable global simulations at 1.4‐km resolution. A systematic comparison with the hydrostatic version at resolutions from 9 to 1.4 km shows that non‐hydrostatic effects emerge in ...
Jozef Vivoda, Inna Polichtchouk, Michail Diamantakis, Filip Váňa   +3 more
wiley   +1 more source

Diagnosing the 11‐year solar cycle's influence on the East Atlantic pattern

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A previously unidentified solar‐cycle response in the East Atlantic pattern is found in late winter at lag +3 years with larger amplitude than the NAO response. A statistically significant NAO response to the solar cycle is seen in late winter at lag 0 years.
Stergios Misios, Paula L. M. Gonzalez, Lesley J. Gray, Scott Osprey, Hedi Ma   +4 more
wiley   +1 more source

North American cooling signature of strong stratospheric wave events depends on the QBO phase

Environmental Research: Climate
Extreme stratospheric wave activity has been linked to surface cold extremes over North America, but little is known whether the Quasi-biennial Oscillation (QBO) plays a role in this linkage. Here, by comparing strong stratospheric wave events during the
Xiuyuan Ding, Gang Chen, Gudrun Magnusdottir   +2 more
doaj   +1 more source

Stratospheric initial conditions provide seasonal predictability of the North Atlantic and Arctic Oscillations

Environmental Research Letters, 2019
The North Atlantic Oscillation (NAO), the regional manifestation of the Arctic Oscillation (AO), dominates winter climate variability in Europe and North America.
Yu Nie, Adam A Scaife, Hong-Li Ren, Ruth E Comer, Martin B Andrews, Philip Davis, Nicola Martin   +6 more
doaj   +1 more source