A5059929339- Climate variability and models
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Hydrology and Drought Analysis
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Plant Water Relations and Carbon Dynamics
- Atmospheric chemistry and aerosols
- Arctic and Antarctic ice dynamics
- Oceanographic and Atmospheric Processes
- Precipitation Measurement and Analysis
- Geophysics and Gravity Measurements
- Climate change and permafrost
- Cryospheric studies and observations
- Climate change impacts on agriculture
- Ocean Waves and Remote Sensing
- Hydrology and Watershed Management Studies
- Ionosphere and magnetosphere dynamics
- Geology and Paleoclimatology Research
- Climate Change and Health Impacts
- Air Quality and Health Impacts
- Tree-ring climate responses
- Atmospheric aerosols and clouds
- Geography and Environmental Studies
- Groundwater and Isotope Geochemistry
Universidade de Vigo
2016-2025
University of Lisbon
2006-2025
Centro de Supercomputación de Galicia
2024-2025
Universidade Federal do Rio de Janeiro
2023
Ghent University
2023
Weatherford College
2023
University of California, Los Angeles
2022
NOAA Chemical Sciences Laboratory
2021-2022
Complejo Hospitalario de Ourense
2021-2022
National Research Council
2011
The most important sources of atmospheric moisture at the global scale are herein identified, both oceanic and terrestrial, a characterization is made how continental regions influenced by water from different source regions. methods used to establish source‐sink relationships vapor reviewed, advantages caveats associated with each technique discussed. described include analytical box models, numerical tracers, physical tracers (isotopes). In particular, consideration given wide range...
About 9 out of 10 liters water evaporated from the oceans every year precipitates back onto oceans. However, remaining 10% that get transported to continents play an irreplaceable role feeding land branch hydrological cycle. Here we use objective 3‐D Lagrangian model (FLEXPART) detect major oceanic moisture source areas and associated continental regions significantly influenced by each source. Our results reveal a highly asymmetrical supply continents, with Northern Atlantic subtropical...
Atmospheric rivers (ARs) are narrow regions responsible for the majority of poleward water vapour transport across midlatitudes. They characterized by high content and strong low level winds, form a part broader warm conveyor belt extratropical cyclones. Although meridional within ARs is critical resources, can also cause disastrous floods especially when encountering mountainous terrain. were labelled as atmospheric in 1990s, have since become well-studied feature midlatitude climate. We...
Abstract. Average monthly precipitation, the original Palmer Drought Severity Index (PDSI) and a recent adaptation to Europe, Self Calibrated PDSI (scPDSI) have been used here analyse spatial temporal evolution of drought conditions in Mediterranean during 20th century. Monthly, seasonal annual trends were computed for period 1901–2000 also first second halves this period. The statistical significance was obtained with modified version Mann-Kendall test that accounts serial auto-correlation....
Attribution of extreme events is a challenging science and one that currently undergoing considerable evolution. In this paper are 19 analyses by 18 different research groups, often using quite methodologies, 12 occurred in 2012. addition to investigating the causes these events, multiple four high temperatures United States, record low levels Arctic sea ice, heavy rain northern Europe eastern Australia, provide an opportunity compare contrast strengths weaknesses various methodologies. The...
We review the major conceptual models of atmospheric moisture transport, which describe link between evaporation from ocean and precipitation over continents. begin by summarizing some basic aspects structure geographical distribution two mechanisms namely low-level jets (LLJs) rivers (ARs). then focus on a regional analysis role these in extreme events with particular attention to intensification (or reduction) transport outcome, terms anomalies subsequent flooding (drought), consider...
Abstract We have analyzed the record-breaking drought that affected western and central Europe from July 2016 to June 2017. It caused widespread impacts on water supplies, agriculture, hydroelectric power production, was associated with forest fires in Iberia. Unlike common continental-scale droughts, this event displayed a highly unusual spatial pattern affecting both northern southern European regions. Drought conditions were observed over 90% of central-western Europe, hitting values...
Abstract This study presents the first multidecadal climatology of cutoff low systems in Northern Hemisphere. The was constructed by using 41 yr (1958–98) NCEP–NCAR reanalysis data and identifying lows means an objective method based on imposing three main physical characteristics conceptual model (the 200-hPa geopotential minimum, circulation, specific structure both equivalent thickness thermal front parameter fields). Several results were confirmed climatologically validated: 1) existence...
[1] In this study we analyzed the influence of El Niño-Southern Oscillation (ENSO) phenomenon on drought severity at global scale. A unique aspect analysis is that ENSO was quantified using a multiscalar indicator, which allowed assessment role phases types affecting various hydrological, agricultural and environmental systems. The based composites corresponding to Niño La Niña phases, were obtained from winter 3.4 index for period 1901–2006. Drought identified in way Standardized...
This work examines the main sources of moisture over Central Brazil and La Plata Basin during year through a new Lagrangian diagnosis method which identifies humidity contributions to budget region. methodology computes budgets evaporation minus precipitation by calculating changes in specific along back‐trajectories for previous 10 d. The origin all air masses residing each region was tracked period 5 years (2000–2004). These regions were selected because they coincide with two centers...
Abstract This study investigated the main sources of moisture in atmosphere over Iberian Peninsula (IP) at annual and seasonal scales using FLEXPART, a powerful new 3D Lagrangian diagnosis method that identifies humidity contributions to budget region. can identify lower cost with greater accuracy than standard isotopic content methods. The results are based on back-tracking analysis all air masses residing IP 5-yr period from 2000 2004. show two most important source regions affecting...
Abstract. We used a Lagrangian model (FLEXPART) together with the 1979–2012 ERA-Interim reanalysis data to investigate role of moisture in Amazon Basin regional hydrological budget over course year. FLEXPART computes budgets evaporation minus precipitation by calculating changes specific humidity along forward and backward trajectories. The tropical Atlantic is most important remote source for Basin. North (NA) mainly contributed during austral summer, while contribution South (SA) prevailed...
We herein present an analysis of the sources atmospheric moisture for Central America using a Lagrangian technique. The results backward and forward tracking FLEXPART model has enabled identification main that reach America, as well evaluation their spatial evolution during passage toward region interest. Data from European Center Medium‐Range Weather Forecasts (ECMWF) 5 year period (2000–2004) were used input model. applied method reproduces variations in location Intertropical Convergence...
Abstract In this study, we address two key issues in the hydrological cycle that have remained elusive: 1) to what extent can expect climate change affect transport of moisture? and, particular, 2) how will changes sources’ intensity (that is, more evaporation) distribution continental precipitation? This was achieved using a multimodel ensemble allowed delimiting those oceanic areas where likely lead an increase evaporation ( E ) minus precipitation P ). Finally, sophisticated Lagrangian...
Abstract. We analyzed changes in surface relative humidity (RH) at the global scale from 1979 to 2014 using both observations and ERA-Interim dataset. compared variability trends RH with those of land evapotranspiration ocean evaporation moisture source areas across a range selected regions worldwide. The sources for each particular region were identified by integrating different observational data model outputs into Lagrangian approach. aim was account possible role air temperature over...
Abstract. An automated atmospheric river (AR) detection algorithm is used for the North Atlantic Ocean basin, allowing identification of major ARs affecting western European coasts between 1979 and 2012 over winter half-year (October to March). The entire coast Europe was divided into five domains, namely Iberian Peninsula (9.75° W, 36–43.75° N), France (4.5° 43.75–50° UK 50–59° southern Scandinavia Netherlands (5.25° E, northern 59–70° N). Following main that made landfall in Europe, a...
The rapidity and synchrony of the African Humid Period (AHP) termination at around 5.5 ka are debated, it is unclear what caused a rapid hydroclimate response. Here we analysed hydrogen isotopic composition sedimentary leaf-waxes (δDwax) from Gulf Guinea, proxy for regional precipitation in Cameroon central Sahel-Sahara. Our record indicates high during AHP followed by decrease 5.8-4.8 ka. similarity with δDwax northern East Africa suggests large-scale atmospheric mechanism. We show that...