Now showing items 1-20 of 124

    • The 2017 coastal El Niño 

      Takahashi, Ken; Aliaga Nestares, Vannia; Ávalos, Grinia; Bouchon, M.; Castro, Anabel; Cruzado, L.; Dewitte, B.; Gutiérrez, B.; Lavado-Casimiro, W.; Marengo, J.; Mosquera-Vásquez, K.; Quispe, Nelson

      (American Meteorological Society, 2018-08)
      Acceso abierto
      The original concept of El Niño consisted of anomalously high sea surface temperature and heavy rainfall along the arid northern coast of Peru (Carranza 1891; Carrillo 1893). The concept evolved into the El Niño–Southern ...
    • A framework for research linking weather, climate and COVID-19 

      Zaitchik, Benjamin F.; Sweijd, Neville; Shumake-Guillemot, Joy; Morse, Andy; Gordon, Chris; Marty, Aileen; Trtanj, Juli; Luterbacher, Juerg; Botai, Joel; Behera, Swadhin; Lu, Yonglong; Olwoch, Jane; Takahashi, Ken; Stowell, Jennifer D.; Rodó, Xavier

      (Nature Research, 2020)
      Acceso abierto
      When COVID-19 began to spread, environmental scientists recognized that the world faced a dangerous upper respiratory viral disease that might exhibit sensitivity to seasonal weather conditions. Many of these scientists ...
    • Accuracy assessment of SRTM v4 and ASTER GDEM v2 over the Altiplano watershed using ICESat/GLAS data 

      Satgé, F.; Bonnet, M.P; Timouk, F.; Calmant, S.; Pillco, R.; Molina, J.; Lavado-Casimiro, W.; Arsen, A.; Crétaux, J.F.; Garnier, J.

      (Taylor and Francis Ltd., 2015-01)
      Acceso cerrado
      The new Global Digital Elevation Model (GDEM v2) has been available since 17 October 2011. With a resolution of approximately 30 m, this model should provide more accurate information than the latest version of Shuttle ...
    • Air pollution and COVID-19 lockdown in a large South American city: Santiago Metropolitan Area, Chile 

      Toro A., Richard; Catalán, Francisco; Urdanivia Lermo, Francesco Renato; Rojas Quincho, Jhojan Pool; Manzano, Carlos A.; Seguel, Rodrigo; Gallardo, Laura; Osses, Mauricio; Pantoja, Nicolás; Leiva-Guzman, Manuel A.

      (Elsevier B.V., 2021-02)
      Acceso abierto
      The implementation of confinement and physical distancing measures to restrict people's activities and transit in the midst of the COVID-19 pandemic allowed us to study how these measures affect the air quality in urban ...
    • Amazon River dissolved load: temporal dynamics and annual budget from the Andes to the ocean 

      Moquet, J.S.; Guyot, J.L.; Crave, A.; Viers, J.; Filizola, N.; Martinez, J.-M.; Oliveira, T.C.; Sánchez, L.S.H.; Lagane, C.; Lavado-Casimiro, W.; Noriega, L.; Pombosa, R.

      (Springer Verlag, 2016-06)
      Acceso abierto
      The aim of the present study is to estimate the export fluxes of major dissolved species at the scale of the Amazon basin, to identify the main parameters controlling their spatial distribution and to identify the role of ...
    • Assessing hydrological changes in a regulated river system over the last 90 years in Rimac Basin (Peru) 

      Vega-Jácome, Fiorella; Lavado-Casimiro, W.; Felipe-Obando, Oscar

      (Springer-Verlag Wien, 2018-04)
      Acceso abierto
      Hydrological changes were assessed considering possible changes in precipitation and regulation or hydraulic diversion projects developed in the basin since 1960s in terms of improving water supply of the Rimac River, which ...
    • Assessing multidecadal runoff (1970–2010) using regional hydrological modelling under data and water scarcity conditions in Peruvian Pacific catchment 

      Rau, P.; Bourrel, L.; Labat, D.; Ruelland, D.; Frappart, F.; Lavado-Casimiro, W.; Dewitte, v; Felipe-Obando, Oscar

      (John Wiley and Sons Ltd, 2019-01)
      Acceso abierto
      In a context of water scarcity in Peruvian Pacific catchments as a crucial issue for Peru, added to the paucity of data availability, we propose a methodology that provides new perspectives for freshwater availability ...
    • Assessing near real-time satellite precipitation products for flood simulations at sub-daily scales in a sparsely gauged watershed in Peruvian andes 

      Llauca, Harold; Lavado-Casimiro, W.; León, Karen; Jimenez, Juan; Traverso, Kevin; Rau, Pedro

      (MDPI AG, 2021-02-23)
      Acceso abierto
      This study investigates the applicability of Satellite Precipitation Products (SPPs) in near real-time for the simulation of sub-daily runoff in the Vilcanota River basin, located in the southeastern Andes of Peru. The ...
    • Assessment of climate change impacts on the hydrology of the Peruvian Amazon-Andes basin 

      Lavado-Casimiro, W.; Labat, D.; Guyot, J.L.; Ardoin-Bardin, Sandra

      (Wiley-Blackwell, 2011-11)
      Embargado
      In this article, we propose an investigation of the modifications of the hydrological response of two Peruvian Amazonas-Andes basins in relationship with the modifications of the precipitation and evapotranspiration rates ...
    • Assessment of ECMWF SEAS5 seasonal forecast performance over South America 

      Gubler, S.; Sedlmeier, K.; Bhend, J.; Ávalos, Grinia; Coelho, C.A.S.; Escajadillo Fernandez, Yury; Jacques-Coper, M.; Martinez, R.; Schwierz, C.; De Skansi, M.; Spirig, C.

      (American Meteorological Society, 2020-03-11)
      Acceso abierto
      Seasonal predictions have a great socioeconomic potential if they are reliable and skillful. In this study, we assess the prediction performance of SEAS5, version 5 of the seasonal prediction system of the European Centre ...
    • Atmospheric transmissivity: distribution and empirical estimation around the central Andes 

      Baigorria, Guillermo A.; Villegas, Esequiel B.; Trebejo, Irene; Carlos, Jose F.; Quiroz, Roberto

      (John Wiley & SonsPE, 2004)
      Acceso abierto
      This study of the distribution in space and time of atmospheric transmissivity τ takes into account the fact that, in complex terrain, many factors affect this variable; thus, it is not possible to use the generalizations ...
    • Attribution of Amazon floods to modes of climate variability: A review 

      Towner, Jamie; Cloke, Hannah L.; Santini, W.; Bazo, Juan; Coughlan de Perez, Erin; Stephens, Elisabeth M.

      (John Wiley & Sons, 2020-08)
      Acceso abierto
      Anomalous conditions in the oceans and atmosphere have the potential to beused to enhance the predictability of flood events, enabling earlier warnings toreduce risk. In the Amazon basin, extreme flooding is consistently ...
    • Basin-scale analysis of rainfall and runoff in Peru (1969–2004): Pacific, Titicaca and Amazonas drainages 

      Lavado-Casimiro, W.; Ronchail, J.; Labat, D.; Espinoza, J.C.; Guyot, J.L.

      (Taylor and Francis Ltd., 2012-06)
      Acceso abierto
      According to the Peruvian agricultural ministry, the Pacific watersheds where the great cities and intense farming are located only benefit from 1% of the available freshwater in Peru. Hence a thorough knowledge of the ...
    • Can artificial neural networks estimate potential evapotranspiration in Peruvian highlands? 

      Laqui, Wilber; Zubieta, Ricardo; Rau, P.; Mejía, Abel; Lavado-Casimiro, W.; Ingol, Eusebio

      ( John Wiley and Sons , 2019-09-26)
      Embargado
      Evapotranspiration (ETo) is one of the most important variables of the water cycle when water requirements for irrigation, water resource planning or hydrological applications are analyzed. In this context, models based ...
    • Central South America 

      Marengo, J. A.; Espinoza, J. C.; Alves, L. M.; Ronchail, J.; Lavado-Casimiro, W.; Ramos, A. M.; Molina-Carpio, J.; Correa, Kris; Baez, J.; Salinas, R.

      (American Meteorological Society, 2020-08)
      Acceso abierto
      Heavy rainfall events were observed in January along the dry southern coast of Peru, resulting in some locations breaking precipitation records of more than 30 years. Heavy rainfall during February led to 42 landslides ...
    • Change in strong Eastern Pacific El Niño events dynamics in the warming climate 

      Carréric, Aude; Dewitte, Boris; Cai, Wenju; Capotondi, Antonietta; Takahashi, Ken; Yeh, Sang-Wook; Wang, Guojian; Guémas, Virginie

      (Springer, 2020)
      Acceso restringido
      While there is evidence that ENSO activity will increase in association with the increased vertical stratification due to global warming, the underlying mechanisms remain unclear. Here we investigate this issue using the ...
    • Characteristics of Precipitating Storms in Glacierized Tropical Andean Cordilleras of Peru and Bolivia 

      Perry, L. B.; Seimon, Anton; Andrade, Marcos; Endries, J. L.; Yuter, S. E.; Velarde, Fernando; Arias, S.; Bonshoms, Marti; Burton, E.J.; Winkelmann, I. R.; Cooper, C.M.; Mamani, G.; Rado, M.; Montoya, N.; Quispe, Nelson

      (Taylor & Francis, 2016-06-01)
      Acceso cerrado
      Precipitation variability in tropical high mountains is a fundamental yet poorly understood factor influencing local climatic expression and a variety of environmental processes, including glacier behavior and water ...
    • Chemical characteristics and identification of PM10 sources in two districts of Lima, Peru 

      Ilizarbe-Gonzáles, Gina Mishel; Rojas-Quincho, Jhojan Pool; Cabello-Torres, Rita Jaqueline; Ugarte-Alvan, Carlos Alfred; Reynoso-Quispe, Patricia; Valdiviezo-Gonzales, Lorgio Gilberto

      (Universidad Nacional de Colombia, 2020-11)
      Acceso abierto
      This study evaluates the concentration of PM10 and PM2.5 andidentifies the sources of pollution in the districts of San Juan de Lurigancho (SJL) and Puente Piedra (PPD) located in the eastern and northern zones of the ...
    • Chemical weathering and atmospheric/soil CO2 uptake in the Andean and Foreland Amazon basins 

      Moquet, J.S.; Crave, A.; Viers, J.; Seyler, P.; Armijos, E.; Bourrel, L.; Chavarri, E.; Lagane, C.; Laraque, A.; Lavado-Casimiro, W.; Pombosa, R.; Noriega, L.; Vera, A.; Guyot, J.L.

      (Elsevier B.V., 2011-08)
      Acceso cerrado
      This study is a geochemical investigation of the Andean and Foreland basins of the Amazon River at high spatial and time resolution, carried out within the framework of the HYBAM research program (Hydro-geodynamics of the ...
    • Cl and Na Fluxes in an Andean Foreland Basin of the Peruvian Amazon: An Anthropogenic Impact Evidence 

      Moquet, Jean-Sébastien; Maurice, Laurence; Crave, Alain; Viers, Jérôme; Arevalo, Nore; Lagane, Christelle; Lavado-Casimiro, W.; Guyot, Jean-Loup

      (Springer, 2014-09-14)
      Acceso abierto
      The dissolved load of the Amazon River is generally considered to be lowlyimpacted by anthropogenic activities. In this work, based on the chemical and hydrologicaldatabase of the Environmental Research Observatory—HYBAM ...