A5001798874- Climate variability and models
- Meteorological Phenomena and Simulations
- Methane Hydrates and Related Phenomena
- Oceanographic and Atmospheric Processes
- Tropical and Extratropical Cyclones Research
- Geology and Paleoclimatology Research
- Superconducting Materials and Applications
- Geological Studies and Exploration
- Plant Water Relations and Carbon Dynamics
- Particle accelerators and beam dynamics
- Renal Transplantation Outcomes and Treatments
- Atmospheric and Environmental Gas Dynamics
- Blood Coagulation and Thrombosis Mechanisms
- Renal Diseases and Glomerulopathies
- Magnetic confinement fusion research
- Geomagnetism and Paleomagnetism Studies
- Precipitation Measurement and Analysis
- Geophysics and Gravity Measurements
- Marine and environmental studies
- Coagulation, Bradykinin, Polyphosphates, and Angioedema
- Magnetic Field Sensors Techniques
- Asthma and respiratory diseases
- Geological and Tectonic Studies in Latin America
- Myeloproliferative Neoplasms: Diagnosis and Treatment
- Platelet Disorders and Treatments
Instituto Geofísico del Perú
2013-2024
Servicio Nacional de Meteorología e Hidrología del Perú
2018-2023
Panasonic (Japan)
1999-2022
Juntendo University
2019-2020
Juntendo University Hospital
2020
National Hospital Organization
2017
Organ Technologies (Japan)
2004-2016
University at Albany, State University of New York
2015
Albany State University
2015
Kanazawa University
2012-2013
We propose that the first two empirical orthogonal function (EOF) modes of tropical Pacific sea surface temperature (SST) anomalies do not describe different phenomena (i.e., El Niño-Southern Oscillation (ENSO) and "El Niño Modoki") but rather nonlinear evolution ENSO.We introduce new uncorrelated indices (E C), based on leading EOFs, respectively account for extreme warm events in eastern cold/moderate central equatorial Pacific, corresponding to regimes with evolution.Recent trends ENSO...
Abstract The El Niño-Southern Oscillation (ENSO) is the main driver of interannual climate extremes in Amazonia and other tropical regions. current 2015/2016 EN event was expected to be as strong century 1997/98, with extreme heat drought over most Amazonian rainforests. Here we show that this protracted event, combined regional warming trend, associated unprecedented a larger extent compared earlier events 1982/83 1997/98. Typical EN-like conditions were observed only eastern Amazonia,...
Abstract The fast and slow components of global warming in a comprehensive climate model are isolated by examining the response to an instantaneous return preindustrial forcing. is characterized initial exponential decay with e-folding time smaller than 5 yr, leaving behind remnant that evolves more slowly. component estimated be small at present, as measured mean near-surface air temperature, and, examined, grows 0.4°C 2100 A1B scenario from Special Report on Emissions Scenarios (SRES),...
Abstract The El Niño of 2015/16 was among the strongest events observed since 1950 and took place almost two decades after previous major event in 1997/98. Here, perspectives are shared by scientists from three national meteorological or climate services that issue regular operational updates on status prediction Niño–Southern Oscillation (ENSO). Public advisories unfolding were issued first half 2015. This followed significant growth sea surface temperature (SST) anomalies, a peak during...
Abstract This article proposes a modification to the standard forcing–feedback diagnostic energy balance model account for 1) differences between effective and equilibrium climate sensitivities 2) variation of sensitivity over time in change experiments with coupled atmosphere–ocean models. In spirit Hansen et al. an efficacy factor is applied ocean heat uptake. Comparing evolution surface warming high low models demonstrates role this transient response CO2 forcing. Abrupt increase show...
Abstract The Andes/Amazon transition is among the rainiest regions of world and interactions between large‐scale circulation topography that determine its complex rainfall distribution remain poorly known. This work provides an in‐depth analysis spatial distribution, variability, intensity in southern transition, at seasonal intraseasonal time scales. based on comprehensive daily data sets from meteorological stations Peru Bolivia. We compare our results with high‐resolution TRMM‐PR 2A25...
ABSTRACT El Niño in the eastern and central Pacific has different impacts on rainfall of South America, atmospheric pathways through Convergence Zone ( SPCZ ) Inter‐Tropical ITCZ are poorly understood. To address this, we performed linear regression analysis E (eastern Pacific) C (central indices sea surface temperature SST ), as well precipitation for , with gridded reanalysis data sets during austral summer (December–February) 1980–2016 period. Positive induces dry anomalies along tropical...
It has been previously proposed that two El Niño (EN) regimes, strong and moderate, exist but the historical observational record is too short to establish this conclusively. Here, 1200 years of simulations with GFDL CM2.1 model allowed us demonstrate their existence in and, by showing relevant dynamics are also evident observations, we present a stronger case for nature. In CM2.1, robust bimodal probability distribution equatorial Pacific sea surface temperature (SST) indices during EN...
The Southwest Pacific Ocean Circulation and Climate Experiment (SPICE) is an international research program under the auspices of CLIVAR.The key objectives are to understand circulation South Convergence Zone (SPCZ) dynamics, as well their influence on regional basin-scale climate patterns.South thermocline waters transported in westward flowing Equatorial Current (SEC) toward Australia Papua-New Guinea.On its way, SEC encounters numerous islands straits forms boundary currents jets that...
The 1925 El Niño (EN) event was the third strongest in twentieth century according to its impacts far-eastern Pacific (FEP) associated with severe rainfall and flooding coastal northern Peru Ecuador February–April 1925. In this study we gathered synthesised a large diversity of situ observations provide new assessment from modern perspective. contrast extreme 1982–1983 1997–1998 events, very strong "coastal Niño" early characterised by warm conditions FEP, but cool elsewhere central Pacific....
Abstract Amazon tropical forests and the semiarid Northeast Brazil (NEB) region have registered very severe droughts during last two decades, with a frequency that may exceeded natural climate variability. Severe impact physiological response of forests, decreasing availability to absorb atmospheric CO 2 , as well biodiversity increasing risk fires. Droughts on this also affect population by isolating them due anomalous low river levels. Impacts over NEB are related water energy security...
Abstract The Andes‐Amazon transition, along the eastern Peruvian Andes, features “hot spots” with strong precipitation. Using 15 years of Tropical Rainfall Measuring Mission PR data we established a robust relation between terrain elevation and mean surface precipitation, latter peaking around 1000 m above sea level (asl), coinciding moisture flux peak South American Low Level Jet (SALLJ). There is diurnal variability, afternoon (13–18 LT) convection in Amazon plains, while on slopes...
This article examines age differences in positive, but especially negative, interactions close relationships. Two community-based representative samples of people from 13 to 96 years the United States and Japan were used explore these Analyses indicate stability across positive a general decline negative both countries. Three possible explanations for this difference examined: social maturity, familiarity, contact frequency. Results provide most support frequency explanation. And finally,...
Abstract The question of why the intertropical convergence zone (ITCZ) is generally north equator in tropical Pacific addressed. Experiments with an atmospheric general circulation model coupled to idealized representations ocean show that presence Andes enough lower sea surface temperature (SST) off west coast South America through evaporation, thus promoting a north–south asymmetry, ITCZ equator, which amplified by interactions between and atmosphere. evaporative cooling results mainly...