Robert Monjo

Robert Monjo
Climate Research Foundation (FIC) · Department of Climate Research

PhD

About

59
Publications
22,151
Reads
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570
Citations
Introduction
Research in Mathematical Physics, applied to Climatology, Meteorology, Relativity and Cosmology. Working at the Climate Research Foundation (FIC) and the Department of Algebra, Geometry and Topology of the Complutense University of Madrid (UCM).
Additional affiliations
October 2018 - present
Complutense University of Madrid
Position
  • Professor (Assistant)
Description
  • Department of Algebra, Geometry and Topology of the Complutense University of Madrid (UCM), Area of Geometry and Topology
January 2018 - present
Independent Researcher
Position
  • Research Officer
October 2010 - present
Climate Research Foundation (FIC)
Position
  • Researcher
Education
October 2007 - January 2011
University of Valencia
Field of study
  • Physics

Publications

Publications (59)
Article
Full-text available
The Mediterranean region is a climate change hotspot, especially concerning issues of hydrological planning and urban water supply systems. In this context, the Jucar River Basin (Spain) presents an increase of frequency, intensity and duration of extreme meteorological phenomena, such as torrential rains, droughts or heat waves, which directly aff...
Article
Full-text available
RESCCUE is an H2020 research project that aims to help cities around the world to become more resilient to physical, social, and economic challenges, using the water sector as the central point of the approach. Since 2016, RESCCUE has been developing methodologies and tools to support cities increase their resilience. The three RESCCUE cities, Barc...
Presentation
Full-text available
Presentation made during the UHINAK IV the Cross-border conference on climate and coastal change that took place in Irún (Spain) during the days 4-5 of November 2020. The abstract works on a comparative study between the ECCLIPSE and CRISI-ADAPT II European projects regarding their respective local future climate scenarios in the Port of Valencia....
Article
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Hyperconical universes can be represented by means of an inhomogeneous metric with positive curvature and linear expansion, that is isomorphic to flat universes with acceleration thanks to an appropriate transformation. Various symmetry properties of this metric are analysed, primarily at the local scale. In particular, the Lagrangian formalism and...
Article
Full-text available
The results of recent climate projections for the city of Barcelona show a relevant increment of the maximum rainfall intensities for the period 2071-2100. Considering the city as a system of systems, urban resilience is strictly linked to the proper functioning of urban services and the knowledge of the cascading effects that may occur in the case...
Article
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p>En el marco del Proyecto europeo RESCCUE, las proyecciones climáticas para la ciudad de Barcelona muestran aumentos significativos de las intensidades máximas de precipitación para el horizonte del 2071-2100. En este trabajo se presenta la evaluación de la resiliencia de los servicios urbanos de la ciudad frente a episodios de inundación para con...
Article
Full-text available
Drought duration strongly depends on the definition thereof. In meteorology, dryness is habitually measured by means of fixed thresholds (e.g. 0.1 or 1 mm usually define dry spells) or climatic mean values (as is the case of the Standardised Precipitation Index), but this also depends on the aggregation time interval considered. However, robust mea...
Article
Full-text available
Dynamical climate models present an initialisation problem due to the poor availability of deep oceanic data, which is required for the model assimilation process. In this sense, teleconnection indices, defined from spatial and temporal patterns of climatic variables, are conceived as useful tools to complement them. In this work, the near‐term cli...
Article
Full-text available
Barcelona city has a strong dependence on the Ter and Llobregat reservoir system to provide drinking water. One main concern for the next century is a potential water scarcity triggered by a severe and persistent rainfall shortage. This is one of the climate-driven impacts studied within the EU funded project RESCCUE. To evaluate potential drought...
Preprint
Full-text available
Drought duration strongly depends on the definition thereof. In meteorology, dryness is habitually measured by means of fixed thresholds (e.g. 0.1 or 1 mm usually define dry spells) or climatic mean values (as is the case of the Standard-ised Precipitation Index), but this also depends on the aggregation time interval considered. However, robust me...
Article
Full-text available
The need for early seasonal forecasts stimulates continuous research in climate teleconnections. The large variability of the Mediterranean climate presents a greater difficulty in predicting climate anomalies. This article reviews teleconnection indices commonly used for the Mediterranean basin and explores possible extensions of one of them, the...
Article
Heat- and cold-wave scenarios and temperature scenarios during the 21st century were obtained for Aragón (Spain), using, for the first time, nine Earth System Models (ESM) and two Representative Concentration Pathway (RCP) scenarios – RCP4.5 and RCP8.5 - belonging to the 5th Coupled Model Intercomparison Project (CMIP5). Local climate heat-wave sce...
Article
Full-text available
The RESCCUE Project is an H2020 research project that aims to help cities around the world to become more resilient to physical, social, and economic challenges, using the water sector as the central point of the approach. RESCCUE will generate models and tools to bring this objective to practice, while delivering a framework enabling city resilien...
Article
Full-text available
This paper explores the derivation of dark energy from a locally conformal projection of hyperconical universes. It focuses on the analysis of theoretical compatibility between the intrinsic view of the standard cosmology and an adequate transformation of hyperconical manifolds. Choosing some parametric family of locally conformal transformations a...
Article
Full-text available
A two-step statistical downscaling method has been reviewed and adapted to simulate twenty-first-century climate projections for the Gulf of Fonseca (Central America, Pacific Coast) using Coupled Model Intercomparison Project (CMIP5) climate models. The downscaling methodology is adjusted after looking for good predictor fields for this area (where...
Article
Full-text available
Most of current cosmological theories are built combining an isotropic and homogeneous manifold with a scale factor that depends on time. If one supposes a hyperconical universe with linear expansion, an inhomogeneous metric can be obtained by an appropriate transformation that preserves the proper time. This model locally tends to a flat Friedman-...
Research
Supplement containing the detailed results from the simulations: expected relative seasonal changes in daily absolute precipitation (mm/day) and daily mean temperature (ºC) throughout the XXI century per meteorological station and each of the climate change studied scenarios, predicted daily mean air temperature; predicted daily mean streamflow, an...
Article
Full-text available
Climate changes affect aquatic ecosystems by altering temperatures and precipitation patterns, and the rear edges of the distributions of cold-water species are especially sensitive to these effects. The main goal of this study was to predict in detail how changes in air temperature and precipitation will affect streamflow, the thermal habitat of a...
Article
Full-text available
Climate change affects aquatic ecosystems altering temperature and precipitation patterns, and the rear edge of the distribution of cold-water species is especially sensitive to them. The main goal was to predict in detail how change in air temperature and precipitation will affect streamflow, the thermal habitat of a cold-water fish (brown trout,...
Article
For the purposes of weather nowcasting, flood risk monitoring and water resources assessment, it is often difficult to achieve a reliable spatio-temporal representation of rainfall due to a low rain gauge network density. However, quantitative precipitation estimation (QPE) has acquired new prospects with the introduction of weather radars, thanks...
Conference Paper
Full-text available
RESUMEN La eficiencia en el uso de los recursos naturales es una prioridad para garantizar la sostenibilidad económica y ambiental de la agricultura. El proyecto Riego-Asesor analiza las relaciones entre la variabilidad climática y las necesidades requeridas en la gestión hídrica agrícola para así diseñar una batería de buenas prácticas de riego en...
Poster
Full-text available
Quantitative precipitation estimation covering a certain area has an essential role in many hydrometeorological applications, highlighting the integration of these estimations into early warning systems and using them as a tool for improving nowcasting of flash‐flood and extreme precipitation events. Previous research allowed assessing a quantifica...
Article
Full-text available
The temporal concentration of precipitation may be characterised using several methods. For climate-scale precipitation, concentration measures are usually performed by means of dimensionless indices such as the Gini Index or the Theil Index. For the purposes of this paper, a set of 66,409 daily time series from around the world were analysed to es...
Article
Full-text available
Groundwater resources are typically the main fresh water source in arid and semi-arid regions. Natural recharge of aquifers is mainly based on precipitation; however, only heavy precipitation events (HPEs) are expected to produce appreciable aquifer recharge in these environments. In this work we used daily precipitation and monthly water level tim...
Conference Paper
Full-text available
Streamflow and temperature regimes are well-known to influence on the availability of suitable physical habitat for instream biological communities. General Circulation Models (GCMs) have predicted significant changes in timing and geographic distribution of precipitation and atmospheric temperature for the ongoing century. However, differences in...
Conference Paper
Full-text available
The present study deals the rainfall spatial variability of a small mountainous catchment, which includes the spatial distribution and variability of convective and stratiform events. This work focuses on the precipitation events with hydrological response in Venero-Claro Basin (Avila, Spain). In this basin of 15km2, flood events of different magni...
Article
Full-text available
This paper addresses the determination of the realized thermal niche and the effects of climate change on the range distribution of two brown trout populations inhabiting two streams in the Duero River basin (Iberian Peninsula) at the edge of the natural distribution area of this species. For reaching these goals, new methodological developments we...
Article
Full-text available
The n-index is defined as the exponent of the power law relating the maximum averaged intensity over given periods of time (e.g. minutes, hours or days) and these periods of averaging. The n-index (between 0 and 1) reports on temporal variability of the rainfall behaviour within an event. This study analyses the n-index around the world and its unc...
Conference Paper
Full-text available
This study is aimed at forecasting the changes in the suitability of brown trout habitat (Salmo trutta L.), caused by alterations in the stream temperature and the flow regime under climate change scenarios. The stream temperature and instantaneous flow in several streams in Central Spain were modelled from daily temperature and precipitation data....
Chapter
Full-text available
Rainfall concentration and drought recurrence are usually studied independently. However, the fractal behavior of the precipitation suggests that there are similarity relations to different time scales between both climatic features. In this paper we have taken a set of 66,409 time series worldwide and have obtained different patterns of similarity...
Article
Full-text available
The Mediterranean coast of Spain often experiences intense rainfall, sometimes reaching remarkable amounts of more than 400 mm in one day. The aim of this work is to study possible changes of extreme precipitation in Spain for this century, simulated from several Coupled Model Intercomparison Project Phase 5 (CMIP5) climate models. Eighteen climate...
Article
Full-text available
A parametric quantile–quantile transformation is used to correct the systematic errors of precipitation projected by regional climate models. For this purpose, we used two new probability distributions: modified versions of the Gumbel and log-logistic distributions, which fit to the precipitation of both wet and dry days. With these tools, the dail...
Article
Full-text available
This study describes a two-step analogue statistical downscaling method for daily temperature and precipitation. The first step is an analogue approach: the “n” days most similar to the day to be downscaled are selected. In the second step, a multiple regression analysis using the “n” most analogous days is performed for temperature, whereas for pr...
Conference Paper
Full-text available
The evaluation of two Global Climate Models (GCM, Lehner et al. 2006) projections under the IPCC IS92a emission scenario (mild scenario similar to SRES A1B—IPCC, 1992) indicate that the flood risk increases in Northern, central and Eastern Europe (IPCC, 2007). The increase of the intense short-duration precipitation in most of Europe is likely to l...
Conference Paper
Full-text available
Inadequate timber extraction management of forests, cattle farming, abusive recreational practices, and rapid urban expansion are all factors that create significant problems in the Cantabrian area watershed for the sustainable management of the hydrological ecosystem services. These problems, added to the consequences of climate change, are alread...
Article
Full-text available
In climatology, there is difficulty in describing the probability distribution of rainfall because there are many days without precipitation, which usually causes the most likely daily rainfall to be zero. None of the widely used models is able to describe the overall variation of daily precipitation. This article proposes an alternative model for...
Conference Paper
Full-text available
Tenerife, the largest of the seven Canary Islands, has the highest elevation of Spain, the Teide volcano (3.718 m. – the third largest volcano in the world from its base). Its climate is hard influenced both for its tropical latitude and for its exposition to the Trade Winds (alisios), which blow from the northeast for almost the whole year. These...
Article
Full-text available
The impacts of global climate change on the Basque coast and the pelagic systems within the southeastern Bay of Biscay are reviewed. Climate projections under greenhouse gas emission scenarios indicate that this area will experience changes in climate throughout the 21st century, including warming of surface air (especially heat wave episodes), int...
Article
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The Potential Distribution model can describe at once the probability distribution and temporal distribution of rainfall. It also allows the incorporation of the dependence of the probability with the number of independent stations. This paper analyzes the probability distribution and temporal distribution of extreme rainfall in the Autonomous Comm...
Article
Full-text available
Recently, possible variations of 'gravitational constant' G have been measured, which can be explained by the expansion of the universe. Usually cosmological models are built with "dark energy" in order to explain why the expansion of the universe is not slowing by the gravitational action. In this paper we propose an alternative model to explain t...
Article
Full-text available
Classical gravitation is so similar to the electrostatic that the possible unification has been investigated for many years. Although electromagnetism is formulated now successfully by quantum field theory, this paper proposes a simple approach to describe the electromagnetism from the macroscopic perspective of general relativity. The hypothesis i...
Article
Full-text available
Future climate change will affect aquatic systems on various pathways. Regarding the hydrological cycle, which is a very important pathway, changes in hydrometeorological variables (air temperature, precipitation, evapotranspiration) in first order impact discharges. The fourth report assessment of the Intergovernmental Panel for Climate Change ind...
Article
Full-text available
According to different regional projections of climate change for the 21st century, changes in the mean and extreme precipitation regimes are expected in most of Europe (Christensen et al., 2007). Precipitation extreme events, in particular, can generate important natural hazards and associated social impacts. such as increasing the probability of...
Article
Full-text available
RESUMEN A menudo se habla de precipitación intensa refiriéndose a la acumulación en una hora o en pocos segundos, incluso realizando comparaciones lineales entre ambas. Sin embargo el comportamiento natural de la precipitación hace que sea necesario hablar de una relación no lineal para referirse a cómo cambia la intensidad de la precipitación con...
Article
Full-text available
The analysis of maximum precipitation is usually carried out by using IDF curves (Intensity- Duration-Frequency), which in turn could be expressed as MAI curves (Maximum Average In- tensities). An index "n" has been developed in this work, defined from the exponent obtained when adjusting IDF climatic curves to MAI curves. That index provides infor...
Article
Full-text available
The analysis of maximum precipitation is usually carried out by using IDF curves (Intensity- Duration-Frequency), which in turn could be expressed as MAI curves (Maximum Average Intensities). An index "n" has been developed in this work, defined from the exponent obtained when adjusting IDF climatic curves to MAI curves. That index provides informa...

Questions

Questions (2)
Question
"According to the water cycle around the world, the speed of physical processes (evaporation + transport + condensation) is interconnected at several time scales". 
What is the best citation to support this claim? It is better to reformulate the affirmation? Thanks!
Question
If we measure the concentration of rainfall over the wet days (for example, using CI of Martin-Vide), what are the possible relationships between the number of wet days and the rainfall concentration? I have seen that sometimes the relationship is reverse (negative correlation) and sometimes is direct (positive correlation). Why?
That is, one would expect that higher concentration is always observed in climates with fewer wet days, but sometimes we can find cases with few wet days and rainfall is distributed uniformly, or in reverse. Are there explanations in dynamic meteorology? Thanks for your reply.

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Projects

Projects (5)
Project
The frequency distribution of daily precipitation amounts almost anywhere conforms to a negative exponential distribution, reflecting the fact that there are many small daily totals and few large ones. Positive exponential curves, which plot the cumulative percentages of days with precipitation against the cumulative percentage of the rainfall amounts that they contribute, can be evaluated through the Concentration Index.
Project
Temporal and spatial features of the rainfall are analysed at local and global scale according to exhaustive methods (Lorenz curve, fractal behaviour, Shannon Entropy, ...). A global characterisation of the rainfall is required in the climate simulation and climate change analysis.