- Av. Morán Valverde s/n y Rumichaca, Quito.
- 593 0995759915
- Physicist, Doctoral student in Metorology and Climatologyedit
El presente trabajo busca estimar las amenazas de inundación debido a los efectos de las lluvias intensas, cambio climático y el Fenómeno de El Niño (ENSO) sobre la ciudad de Machala, Ecuador. Se han estudiado siete estaciones... more
El presente trabajo busca estimar las amenazas de inundación debido a los efectos de las lluvias intensas, cambio climático y el Fenómeno de El Niño (ENSO) sobre la ciudad de Machala, Ecuador. Se han estudiado siete estaciones meteorológicas del Instituto Nacional de Meteorología e Hidrología (INAMHI), dos de las cuales tenían datos diarios
de precipitación y temperatura con series temporales con más de 30 años. Para identificar los índices de cambio climático se utilizó el programa R-climdex, incluyendo los reportes de inundaciones de la Secretaría Nacional de Gestión de Riesgos SNGR y el Índice del Fenómeno del Niño ONI. Los resultados muestran que Machala es una ciudad en riesgo ante inundaciones en la que los eventos extremos de precipitación son la principal causa. Presentándose un aumento, tanto en intensidad como en frecuencia, lo cual es congruente con el fenómeno de cambio climático. Además se encontró que los eventos de inundación están relacionados con la aparición de ENSO. En lo que se refiera a la temperatura, se encontró también que los valores altos de temperaturas mínimas están en aumento, una evidencia más de que el cambio climático podría estar afectando a la zona de estudio.
de precipitación y temperatura con series temporales con más de 30 años. Para identificar los índices de cambio climático se utilizó el programa R-climdex, incluyendo los reportes de inundaciones de la Secretaría Nacional de Gestión de Riesgos SNGR y el Índice del Fenómeno del Niño ONI. Los resultados muestran que Machala es una ciudad en riesgo ante inundaciones en la que los eventos extremos de precipitación son la principal causa. Presentándose un aumento, tanto en intensidad como en frecuencia, lo cual es congruente con el fenómeno de cambio climático. Además se encontró que los eventos de inundación están relacionados con la aparición de ENSO. En lo que se refiera a la temperatura, se encontró también que los valores altos de temperaturas mínimas están en aumento, una evidencia más de que el cambio climático podría estar afectando a la zona de estudio.
Research Interests:
This research analyzes daily extreme events of minimum, maximum temperatures and rain in the Metropolitan District of Quito using data of more than 30 years from the meteorological network of INAMHI (Instituto Nacional de Meteorología e... more
This research analyzes daily extreme events of minimum, maximum temperatures and rain in the Metropolitan District of Quito using data of more than 30 years from the meteorological network of INAMHI (Instituto Nacional de Meteorología e Hidrología de Ecuador) using the R- ClimDex computer program. A scenario for the year 2032 combining
statistical results of extreme events and physical forcing from PRECIS scenarios A2 and B2 is also presented; using the extreme value theory from extReme computer program. The results showed an increase in extreme minimum and maximum monthly temperature values in both, magnitude and frequency; and an increase in the intensity of heavy rainfall. Projections to 2022 maintain this behavior, with results that should be taken into account by policy makers and scientists due to the danger they mean for Quito’s ecosystem.
statistical results of extreme events and physical forcing from PRECIS scenarios A2 and B2 is also presented; using the extreme value theory from extReme computer program. The results showed an increase in extreme minimum and maximum monthly temperature values in both, magnitude and frequency; and an increase in the intensity of heavy rainfall. Projections to 2022 maintain this behavior, with results that should be taken into account by policy makers and scientists due to the danger they mean for Quito’s ecosystem.
Research Interests:
The present study aims to determine the effects of climate change in the weather variability in the Metropolitan District of Quito and its surroundings in the last 30 years. For this purpose, using data from the National Institute of... more
The present study aims to determine the effects of climate change in the weather variability in the Metropolitan District of Quito and its surroundings in the last 30 years. For this purpose, using data from the National Institute of Meteorology and Hydrology (Instituto Nacional de Meteorología e Hidrología - INAMHI), two statistical treatments were performed. First, a trend analysis of the maximum and minimum monthly temperatures, precipitation, heliophany, relative humidity and cloudiness using a standard least
squares linear regression method and its associated F-test to determine the statistical significance of the model was done. The second treatment, looking for extreme events, we analyzed daily data in order to determine temperature and precipitation extremes using RclimDex package following the ECTCCDI (Expert Team on Climate Change Detection and Indices) recommendations. The results shows
increases in trends and anomalous behavior that may be considered as a result of the effect of climate change and climate variability.
squares linear regression method and its associated F-test to determine the statistical significance of the model was done. The second treatment, looking for extreme events, we analyzed daily data in order to determine temperature and precipitation extremes using RclimDex package following the ECTCCDI (Expert Team on Climate Change Detection and Indices) recommendations. The results shows
increases in trends and anomalous behavior that may be considered as a result of the effect of climate change and climate variability.
Research Interests:
The present study aims to determine the effects of climate change in the weather variability in the Metropolitan District of Quito and its surroundings in the last 30 years. For this purpose, using data from the National Institute of... more
The present study aims to determine the effects of climate change in the weather variability in the Metropolitan District of Quito and its surroundings in the last 30 years. For this purpose, using data from the National Institute of Meteorology and Hydrology (Instituto Nacional de Meteorología e Hidrología - INAMHI), two statistical treatments were performed. First, a trend analysis of the maximum and minimum monthly temperatures, precipitation, heliophany, relative humidity and cloudiness using a standard least squares linear regression method and its associated F-test to determine the statistical significance of the model was done. The second treatment, looking for extreme events, we analyzed daily data in order to determine temperature and precipitation extremes using RclimDex package following the ECTCCDI (Expert Team on Climate Change Detection and Indices) recommendations. The results shows increases in trends and anomalous behavior that may be considered as a result of the e...
Research Interests:
Self-organized criticality (SOC) is characterized by a power law behavior over complex systems like earthquakes and avalanches. We study rainfall using data of one day, 3 hours and 10 min temporal resolution from INAMHI (Instituto... more
Self-organized criticality (SOC) is characterized by a power law behavior over complex systems like earthquakes and avalanches. We study rainfall using data of one day, 3 hours and 10 min temporal resolution from INAMHI (Instituto
Nacional de Meteorología e Hidrología) station at Izobamba, DMQ (Metropolitan District of Quito), satellite data over Ecuador from Tropical Rainfall Measure Mission (TRMM,) and REMMAQ (Red Metropolitana de Monitoreo Atmosférico de
Quito) meteorological stations over, respectively.
Our results show a power law behavior of the numbe
r of rain events
versus mm of rainfall measured for the high resolut
ion case (10 min), and as the resolution decreases
this behavior gets
lost. This statistical property is the fingerprint
of a self-organized critical process (Peter and Chr
istensen, 2002) and may serve as a benchmark for models of precipitation ba
sed in phase transitions between water vapor and pr
ecipitation (Peter
and Neeling, 2006).
Nacional de Meteorología e Hidrología) station at Izobamba, DMQ (Metropolitan District of Quito), satellite data over Ecuador from Tropical Rainfall Measure Mission (TRMM,) and REMMAQ (Red Metropolitana de Monitoreo Atmosférico de
Quito) meteorological stations over, respectively.
Our results show a power law behavior of the numbe
r of rain events
versus mm of rainfall measured for the high resolut
ion case (10 min), and as the resolution decreases
this behavior gets
lost. This statistical property is the fingerprint
of a self-organized critical process (Peter and Chr
istensen, 2002) and may serve as a benchmark for models of precipitation ba
sed in phase transitions between water vapor and pr
ecipitation (Peter
and Neeling, 2006).
Research Interests:
Investigation of an oxygen vacancy and F center in the cubic and tetragonal lattices of PbTiO3 crystals is done by means of quantumchemical simulations. Displacements of defect-surrounding atoms, electronic and optical properties, lattice... more
Investigation of an oxygen vacancy and F center in the cubic and tetragonal lattices of PbTiO3 crystals is done by means of quantumchemical simulations. Displacements of defect-surrounding atoms, electronic and optical properties, lattice relaxation energies and some new effects due to the defects presence are reported and analyzed. A comparison with similar studies is made and conclusions are drawn on the basis of the obtained results.
Research Interests:
Solar radiation is an important natural factor for terrestrial life because it shapes the climate of the Earth and has a significant influence on the environment. A part of this is, the ultraviolet radiation (UV) which is comprised of the... more
Solar radiation is an important natural factor for terrestrial life because it shapes the climate of the Earth and has a significant influence on the environment. A part of this is, the ultraviolet radiation (UV) which is comprised of the electromagnetic spectrum between 100 and 400 nm. A moderate exposure to UV radiation generated some cardiovascular benefits and vitamin D calcification (Marin, 2007). However, hazardous biological effects that can result considerable, for this, ultraviolet radiation is usually divided into three bands: UVC (100-280 nm) which is very dangerous to living things and is completely absorbed by the atmosphere, the radiation UVB (280-315 nm) that comes in a small proportion to the surface because it is absorbed about 90% and can generate ridges, skin cancer, cataracts and pterygium, and which comes full to the earth's surface is UVA (315-400 nm) which cause premature skin aging and darkening (Marin, 2007). All this effects of solar radiation are cumulative which has raised awareness of the danger, creating a UV index (UVI) with health recommendations for the community to consider their exposure (Benavides, 2010)