Conferencia
https://hdl.handle.net/20.500.12542/189
2024-03-28T09:27:03ZSistema de Alerta Temprana en zona de aluviones
https://hdl.handle.net/20.500.12542/2721
Sistema de Alerta Temprana en zona de aluviones
Chira La Rosa, Jorge; Kuroiwa, J.M.
En la cuenca media-alta del río Rímac en la región Lima Metropolitana se ha producido la ocupación irregular de quebradas aparentemente secas que se activan periódicamente por efectos de lluvias locales. La activación de estas quebradas genera flujos de lodos y detritos, conocidos como “huaycos” que son una forma de aluvión, lo que a su vez produce daños materiales y pérdidas a la salud y la vida, principalmente de la población del distrito de Chosica. El presente trabajo presenta una propuesta de mejora del Sistema de Monitoreo de Peligros existente, manejado por el Servicio Nacional de Meteorología e Hidrología del Perú, organismo encargado de la emisión de avisos de peligros. La propuesta consiste en una mejora en el diseño de la red, incrementando el número de estaciones automáticas; una propuesta tecnológica que implicaría un cambio en las telecomunicaciones con un sistema GPRS y la adquisición de un radar meteorológico del tipo LAWR (Radar Meteorológico de Área Local, en inglés); así como un modelo de gestión del sistema, lo cual vendría a constituir un Sistema de Alerta Temprana para la zona de Chosica.
2016-01-01T00:00:00ZThe challenges of new Regional Basic Observation Network on the Regional Association III
https://hdl.handle.net/20.500.12542/2720
The challenges of new Regional Basic Observation Network on the Regional Association III
Chira La Rosa, Jorge
According to decision 21 taken by 69th Executive Congress of World Meteorological Organization (WMO), the new Regional Basic Observations Network (RBON) will be created, which will be mainly made up of the Regional Basic Synoptic Network (RBSN) and Regional Basic Climatological Network (RBCN), but with new functions. It is expected that this new network will provide better services and It will allow regional observing capabilities to be fully exploited. However, although the RBSN and RBCN on the Regional Association III (RA III) have improved their performance with respect to previous years, there are still some challenges for the National Meteorological and Hydrological Weather Services (NMHSs) that must be solved in order that the RBON meets the expected objectives. In some NMHSs of the RA III, as in the case of Peru, there are institutions linked to the aeronautical sector whose interests currently are not necessarily aligned with the plans of NMHSs and WMO and those that have allowed in the past the conformation of the RBSN and RBCN networks with stations of their own networks. This coupled with the lack of WIGOS Regional Center that help to implement WIGOS National Plan, makes the implementation of the future Regional Basic Observations Network a challenge for these NMHSs. This presentation attempts to draw some of the key issues and to give some suggestions for the future development of RBON in the RA III.
2018-01-01T00:00:00ZValidation of CMIP5 models by means of representing pattterns of mesoscale systems on South America for the summer and Winter
https://hdl.handle.net/20.500.12542/2149
Validation of CMIP5 models by means of representing pattterns of mesoscale systems on South America for the summer and Winter
Barreto Schuler, Christian; Llacza Rodríguez, Alan
The climate model developers have conducted a new series of climate modeling experiments, which are part of the Couple Models Intercomparison Phase 5 (CMIP5). These show us a new generation of Atmosphere-Ocean couple models, as well as a new generation of sceneries. The performance rate of the models representing the current climate is not uniform. In other words, not every region on the planet is well represented by the same models (Errasti, 2011). Therefore, it is necessary the validation of the General Circulation Models (GCMs) prior to elaborate climate change studies.
For the development of this study, some specific data has been used: pressure at sea level, 200hPa geopotential, precipitation and 2m temperature, all of them are monthly data from 48 CMIP5 models. On the other hand, the 7 models represent better the minimum temperature than the maximum, mainly for summertime. Finally the best represented regions are central and northern forest.
WCRP VAMOS/CORDEX LACII - Workshop
2014-01-01T00:00:00ZDynamic regionalization over Peru: HadGEM2-ES / WRF
https://hdl.handle.net/20.500.12542/1554
Dynamic regionalization over Peru: HadGEM2-ES / WRF
Llacza Rodríguez, Alan; Jácome Vergaray, Gerardo
The present work has as objective the elaboration of a new gridded data base to 16 km, for the analysis of the changes of the future climate on Peru, mainly in the variables of precipitation, maximum and minimum temperature. The methodology used is the dynamic regionalization technique, using the regional climate model Weather Research and Forecasting (WRF), using the initial conditions of the HadGEM2-ES global model, for the period of 1981-2065, with the RCP 8.5 emission scenario. The analysis of the results for the observed period indicates a better representation of the precipitation in the central and southern part of the Peruvian Andes and overestimation mainly in the summer period (December, January and February). With regard to temperatures, there is a better representation of the minimum temperature compared to the maximum. While the results of the changes to 2030 indicate non-uniform values over Peru, with an increase in precipitation over the coast and jungle, and decreases over part of the Andes and southern coast of Peru. Regarding the temperatures, there are increases over the whole country, mainly over the Andes.
2008-01-01T00:00:00Z