Ivana Cvijanović
A5066905498- Climate variability and models
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Climate change and permafrost
- Cryospheric studies and observations
- Climate Change and Health Impacts
- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Methane Hydrates and Related Phenomena
- Air Quality and Health Impacts
- Oceanographic and Atmospheric Processes
- Atmospheric Ozone and Climate
- Global Health Care Issues
- Plant Water Relations and Carbon Dynamics
- Isotope Analysis in Ecology
- Thermoregulation and physiological responses
- Plant responses to elevated CO2
- Geological and Geophysical Studies
- Hydrology and Drought Analysis
- Climate Change Policy and Economics
- Distributed and Parallel Computing Systems
- Ocean Acidification Effects and Responses
- Soil and Unsaturated Flow
- Scientific Computing and Data Management
- Agriculture Sustainability and Environmental Impact
Barcelona Institute for Global Health
2021-2024
University of California System
2012-2023
The University of Tokyo
2023
Universitat Politècnica de Catalunya
2020-2022
Barcelona Supercomputing Center
2020-2022
Lawrence Livermore National Laboratory
2015-2018
University of Copenhagen
2009-2016
Carnegie Institution for Science
2013-2015
Stanford University
2013
Due to their outstanding resolution and well-constrained chronologies, Greenland ice-core records provide a master record of past climatic changes throughout the Last Interglacial–Glacial cycle in North Atlantic region. As part INTIMATE (INTegration Ice-core, MArine TErrestrial records) project, protocols have been proposed ensure consistent robust correlation between different climate. A key element these has formal definition ordinal numbering sequence Stadials (GS) Interstadials (GI)...
The Earth system model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major configurations, a methodology ensuring the simulations are comparable across different high-performance computing (HPC) systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behavior biases well within frame known from recent CMIP models. With...
Abstract. The Earth System Model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major model configurations, a methodology ensuring the simulations are comparable across different HPC systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behaviour biases well within frame known from recent CMIP models. With improved...
Record-breaking summer forest fires have become a regular occurrence in California. Observations indicate fivefold increase burned area (BA) forests northern and central California during 1996 to 2021 relative 1971 1995. While the higher temperature increased dryness been suggested be leading causes of BA, extent which BA changes are due natural variability or anthropogenic climate change remains unresolved. Here, we develop climate-driven model evolution combine it with natural-only...
Older adults are generally amongst the most vulnerable to heat and cold. While temperature-related health impacts projected increase with global warming, influence of population aging on these trends remains unclear. Here we show that at 1.5 °C, 2 3 °C heat-related mortality in 800 locations across 50 countries/areas will by 0.5%, 1.0%, 2.5%, respectively; among which 1 5 4 deaths can be attributed aging. Despite a decrease cold-related due progressive warming alone, mostly counteract this...
'Tis the seasonal Anthropogenic climate change has become clearly observable through many metrics. These include an increase in global annual temperatures, growing heat content of oceans, and sea level rise owing to melting polar ice sheets glaciers. Now, Santer et al. report that a human-caused signal cycle tropospheric temperature can also be measured (see Perspective by Randel). They use satellite data anthropogenic “fingerprint” predicted models show extent effects discuss how these...
From 2012 to 2016, California experienced one of the worst droughts since start observational records. As in previous dry periods, precipitation-inducing winter storms were steered away from by a persistent atmospheric ridging system North Pacific. Here we identify new link between Arctic sea-ice loss and Pacific geopotential ridge development. In two-step teleconnection, changes lead reorganization tropical convection that turn triggers an anticyclonic response over Pacific, resulting...
Abstract. In this paper, we present and evaluate the skill of an EC-Earth3.3 decadal prediction system contributing to Decadal Climate Prediction Project – Component A (DCPP-A). This is capable skilfully simulating past global mean surface temperature variations at interannual forecast times as well local in regions such tropical Atlantic, Indian Ocean most continental areas, although comes from representation external radiative forcings. benefit initialization predictive evident some areas...
BackgroundClimate change can directly impact temperature-related excess deaths and might subsequently the seasonal variation in mortality. In this study, we aimed to provide a systematic comprehensive assessment of potential future changes variation, or seasonality, mortality across different climate zones.MethodsIn modelling collected daily time series mean temperature (all causes non-external only) via Multi-Country Multi-City Collaborative (MCC) Research Network. These data were during...
Abstract California is one of the major uncertainty hotspots for climate change, as models have historically been split between projecting wetter and drier future conditions over region. We analysed (mid‐century end‐century) projections California's winter precipitation changes from latest Coupled Model Intercomparison Project Phase 6 (CMIP6), studied its respective model agreement in comparison to previous CMIP5 projections. Over northern more than two thirds each ensemble agree on...
BackgroundExposure to cold spells is associated with mortality. However, little known about the global mortality burden of spells.MethodsA three-stage meta-analytical method was used estimate by means a time series dataset 1960 locations across 59 countries (or regions). First, we fitted location-specific, spell-related associations using quasi-Poisson regression distributed lag non-linear model period up 21 days. Second, built multivariate meta-regression between location-specific and seven...
Updated and improved satellite retrievals of the temperature mid-to-upper troposphere (TMT) are used to address key questions about size significance TMT trends, agreement with model-derived values, whether models data show similar vertical profiles warming. A recent study claimed that trends over 1979 2015 3 times larger in climate than but did not correct for contribution receive from stratospheric cooling. Here, it is shown average ratio modeled observed sensitive both uncertainties...
Abstract Reduction of the Arctic sea ice cover can affect atmospheric circulation and thus impact climate beyond Arctic. The response may, however, vary with geographical location loss. sensitivity to loss is studied using a general model in configuration that allows combination prescribed an active mixed layer ocean. This hybrid setup makes it possible simulate isolated provides more complete compared experiments fixed surface temperatures. Three investigated scenarios different regions all...
Heatwaves are one of the leading causes climate-induced mortality. Using examples recent heatwaves in Europe, United States and Asia, we illustrate how communication dangerous conditions based on temperature maps alone can lead to insufficient societal perception health risks. Comparison maximum daily values with physiological heat stress indices accounting for impacts both humidity, illustrates substantial differences geographical extent timing their respective peak during these events....
Abstract The rising humid heat is regarded as a severe threat to human survivability, but the proper integration of into heat-health alerts still being explored. Using state-of-the-art epidemiological and climatological datasets, we examined association between multiple stress indicators (HSIs) daily mortality in 739 cities worldwide. Notable differences were observed long-term trends timing events detected by HSIs. Air temperature (Tair) predicts heat-related well with robust negative...
In land surface models, which account for the energy balance at surface, subsurface heat transport is an important component that reciprocally influences ground, sensible, and latent fluxes net radiation. most parameterizations are commonly simplified computational efficiency. A simplification made in all models to disregard sensible of rain, H l , convective flow, q cv i.e., through moisture redistribution. These simplifications act decouple from subsurface, not realistic. The influence on...
Changes in sea ice cover have important consequences for both Earth's energy budget and atmospheric dynamics. Sea acts as a positive feedback the climate system, amplifying effects of radiative forcing while also affecting meridional interhemispheric temperature gradients that can impact mid- low latitude circulation. In this study, we partition evaluate changing on global warming using set simulations with active suppressed response. Two aspects CO2-induced changes are investigated: (1)...
We calculate the hourly wet bulb globe temperature (WBGT) values for last 50 years over Western Africa to assess emergence of new heatwave hotspots and interplay between moist dry heatwaves. In formulation used, WBGT is derived using grided data from ERA5 ERA5-HEAT: 2-m air temperature, relative humidity, 10-m wind speed mean radiant (a measure incidence radiation on a body), thus representative outdoor conditions.We find that heat stress estimated through does not peak same geographical...
Abstract Through its atmospheric teleconnections, El Niño–Southern Oscillation (ENSO) shifts and disrupts weather climate patterns far beyond the equatorial Pacific where it occurs often resulting in catastrophic consequences many countries of world. It is also largest source seasonal interannual predictability. Despite huge importance, ENSO forecasting still not performed operationally at longer leads than about 6 months ahead. At same time, there mounting scientific evidence that forecasts...
Abstract In this study, southward intertropical convergence zone (ITCZ) shifts are investigated in three different scenarios: Northern Hemispheric cooling, Southern warming, and a bipolar seesaw-like forcing that combines the latter two. The experiments demonstrate mutual effects northern- southern-high-latitude forcings exert on tropical precipitation, suggesting time-scale-dependent dominance of northern versus southern forcings. accordance with this, two-phase precipitation suggested,...