An unprecedented strengthening of Pacific trade winds since the late 1990s (ref. 1) has caused widespread climate perturbations, including rapid sea-level rise in the western tropical Pacific2–5, strengthening of Indo-Pacific ocean currents6,7, and an increased uptake of heat in the equatorial Pacific thermocline1. The corresponding intensification of the atmospheric Walker circulation is also ...

Abstract. We re-examine the uncertainty of El Niño–Southern Oscillation (ENSO) teleconnection to North Atlantic following investigation Deser et al. (2017) (DES2017). Our analyses are performed on November–December (ND) and January–February (JF) means separately for a geographical area that covers larger extent in midlatitude than DES2017. The motivation splitting cold season this way arises fr...

2 ABSTRACT A seasonal forecast system based on a global, fully coupled ocean-atmosphere general circulation model is used to (i) evaluate the interannual predictability of the Northwest Pacific climate during June-August following El Niño [JJA(1)], and (ii) examine the contribution from the tropical Indian Ocean (TIO) variability. The model retrospective forecast for 1983-2006 captures major mo...

We use long instrumental temperature series together with available field reconstructions of sea-level pressure (SLP) and three-dimensional climate model simulations to analyze relations between temperature anomalies and atmospheric circulation patterns over much of Europe and the Mediterranean for the late winter/early spring (January–April, JFMA) season. A Canonical Correlation Analysis (CCA)...

[1] Year-to-year variations in summer drawdown of Northern Hemisphere atmospheric carbon dioxide (CO2) are compared with corresponding year-to-year variations in sealevel pressure (SLP), surface air temperature, and the productivity of land vegetation as inferred from the satellite-derived normalized difference vegetation index (NDVI). Annual values of CO2 drawdown for the years 1980–2000 are e...

This study investigates circulation types (CTs) in Africa, south of the equator, that are related to wet and dry conditions Western Cape, statistical relationship between selected CTs Southern Annular Mode (SAM), changes frequency occurrence SAM under ssp585 scenario. Obliquely rotated principal component analysis applied sea level pressure (SLP) was used classify equator. Three were found have...

the areas of the world that have mediterranean style climate are found at about 35 degrees north and south of the equator, on the western sides of continents. the distinctive feature of this climate is the small amount of rain in the summer. overall, the climate has a moderate amount of rainfall and warm winters and hot summers and. the climate of the mediterranean region is conditioned by its ...

We test the hypothesis that climate and environmental conditions are becoming favorable for dengue transmission in San Juan, Puerto Rico. Sea Level Pressure (SLP), Mean Sea Level (MSL), Wind, Sea Surface Temperature (SST), Air Surface Temperature (AST), Rainfall, and confirmed dengue cases were analyzed. We evaluated the dengue incidence and environmental data with Principal Component Analysis,...

[1] A link is found between the variability of Fram Strait sea ice export and the phase of zonal wave 1 in SLP for the period 1958– 1997. Previous studies have found that the link between ice export through Fram Strait and the NAO is inconsistent over time scales longer than the last two decades. Inconsistent and low correlations are also found between Fram Strait ice export and the AO index. T...

We investigate the effects of solar forcing on North Atlantic (NA) summer climate, in climate simulations with Earth System Models (ESMs), over preindustrial past millennium (AD 850–1849). use one simulation and a four-member ensemble performed MPI-ESM-P CESM-LME models, respectively, forced only by low-scaling variations Total Solar Irradiance (TSI). apply linear methods (correlation regressio...