Results 71 to 80 of about 6,032 (263)

Climate change and the Madden‐Julian Oscillation: A vertically resolved weak temperature gradient analysis

Journal of Advances in Modeling Earth Systems, 2017
WTG balance is used to examine how changes in the moist thermodynamic structure of the tropics affect the MJO in two simulations of the Superparameterized Community Earth System Model (SP‐CESM), one at preindustrial (PI) levels of CO2 and one where CO2 ...
Brandon O. Wolding, Eric D. Maloney, Stephanie Henderson, Mark Branson   +3 more
doaj   +1 more source

A Python diagnostics package for evaluation of Madden–Julian Oscillation (MJO) teleconnections in subseasonal-to-seasonal (S2S) forecast systems [PDF]

Geoscientific Model Development
The Madden–Julian Oscillation (MJO) teleconnections diagnostics package is an open-source Python software package that provides process-level evaluation of MJO teleconnections predicted by subseasonal-to-seasonal (S2S) forecast systems.
C. Stan, S. Kollapaneni, A. M. Jenney, J. Wang, Z. Wu, C. Zheng, C. Zheng, H. Kim, C. I. Garfinkel, A. Singh   +9 more
doaj   +1 more source

Tree‐Ring Oxygen Isotope Values During the Last Glacial Maximum and Insights to Future Changes in Climate

Terra Nova, EarlyView.
ABSTRACT Annual tree‐ring oxygen‐isotope values were measured from sections of two fossil logs of Picea mariana (black spruce) recovered from last glacial maximum proglacial sediment in Illinois, USA. Collectively, the specimens date from ca. 25,130 to 24,720 cal years BP.
Dana M. Labotka, Mostafa J. Fayek, B. Brandon Curry   +2 more
wiley   +1 more source

Empirical Orthogonal Teleconnections

Journal of Climate, 2000
Abstract A new variant is proposed for calculating functions empirically and orthogonally from a given space–time dataset. The method is rooted in multiple linear regression and yields solutions that are orthogonal in one direction, either space or time. In normal setup, one searches for that point in space, the base point (predictor), which, by linear
H. M. van den Dool, S. Saha, Å Johansson   +2 more
openaire   +1 more source

Teleconnections in the Atmosphere and Oceans

Bulletin of the American Meteorological Society, 2010
AFFILIATIONS: KucharsKi—international centre for Theoretical physics, earth system physics section, Trieste, italy; Kang—seoul national University, seoul, Korea; straus—center for oceanland-Atmosphere studies, George mason University, Fairfax, Virginia; King—monash University, Jalan lagoon selatan, Bandar sunway, malaysia CORRESPONDING AuThOR: Fred ...
Kucharski, Fred, Kang, In-Sik, Straus, David, King, Martin P.   +3 more
openaire   +2 more sources

Stratospheric Ozone Depletion Causes Southern Ocean Surface Cooling

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Stratospheric ozone depletion strongly influences Southern Ocean climate change. Using coupled climate model simulations, we quantify the transient effect of stratospheric ozone depletion on sea surface temperature (SST) over the Southern Ocean from 1982 to 2005.
Shouwei Li, Wei Liu, Liping Zhang, William J. M. Seviour, Gavin A. Schmidt   +4 more
wiley   +1 more source

An Atmosphere–Land–Ocean Coupled Global NWP System: Performance Evaluation for Potential Operational Use

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract This study assesses the influence of ocean–atmosphere coupling on short‐ and medium‐range forecasts of the July 2024 Indian summer monsoon using the newly configured coupled NCMRWF Unified Model (C‐NCUM). Forecasts are evaluated against the operational atmosphere–land model (NCUM) using GPM rainfall, OSTIA SSTs, and reanalysis‐derived moisture
Sumit Kumar, Imranali M. Momin, Sukhwinder Kaur, Kondapalli Niranjan Kumar, Jonah Roberts‐Jones, Matthew J. Martin, John P. George, V. S. Prasad   +7 more
wiley   +1 more source

ENSO teleconnections with the NAE sector during boreal early-winter in CMIP5/CMIP6 models: impacts of the atmospheric mean state

The simulation of teleconnections in climate models can be hindered by biases. This study investigates the impact of model systematic errors on the teleconnections between the El Niño-Southern Oscillation (ENSO) and the North Atlantic-European (NAE ...
Gualdi, Silvio, Sabatani, Davide
core   +1 more source

Track‐Dependent Links Between Tropical Cyclones and Extratropical Predictability in Physical and AI Models

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Global medium‐range weather forecasts suffer occasional failures (“busts”) linked to tropical cyclones (TCs). We investigate TC influences on extratropical predictability by comparing forecasts from a physics‐based model (ECMWF‐IFS) and an AI‐hybrid model (Google‐NGCM) initialized near TC genesis.
Gan Zhang
wiley   +1 more source

Atmospheric teleconnections between the Arctic and the Baltic Sea regions

, 2017
. The teleconnections between meteorological parameters of the Arctic and the Baltic Sea regions were analysed based on the NCEP-CFSR reanalysis data for 1979–2015.
Piia Post, Erko Jakobson, Jaak Jaagus, Liisi Jakobson   +3 more
core   +1 more source