1
informe técnico
Publicado 1998
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El presente documento evalúa los efectos negativos y beneficios directos e indirectos del fenómeno ENSO en la agricultura de la jurisdicción de las Direcciones Regionales del SENAMHI San Martín, Lambayeque y Piura a fin de reforzar los sistemas de alerta al Gobierno Central y el segmento de la población ligada a la actividad agrícola y pecuaria. El documento de trabajo de campo concluye que los efectos negativos ENSO 1997/98 predominaron sobre efectos benéficos ocasionados tanto por las anomalía térmica y sequía en las primeras fases del evento que causaron los mayores estragos (mayo/diciembre 97) y luego por huaycos e inundaciones en la fase culminantes (enero/marzo 98) dando en definitiva un balance negativo para la agricultura, cuyas incidencias fueron mayores en la costa norte (Piura y Lambayeque) y decrecieron hacia los valles de Jaén y Bagua y toda la región San Martín...
2
artículo
Publicado 2006
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Using data of atmospheric pollution dust registered in a network of 24 sample points, suitably distributed into the atmospheric basin of Lima-Callao Metropolitan Area and spatially analyzed related to the diary and annual meteorological and climatic cycle registered throughout the four season periods of 2004 in the Jorge Chavez Airport weather and radiosondaje station; three persistent cells or critical zones can be showed with nucleus values of 37,7; 22,6 and 25 t/km2/month for february (summer), 30,3; 17,5; and 25 t/km2/month for april (fall), 20,7;18,3 and 25,5 t/km2/month for august (winter) and 23,0; 29,0 and 25,5 t/km2/month for september (spring). The behavior described is in close relation with the variations of height of the subsidence thermal inversion layer base throughout the year, which in summer is in 669 m and the air pollution get worse, while in winter is in 848 m and th...
3
artículo
Publicado 2003
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Measurements of gaseous SO2,NH3,and O3 using IVL passive sampler technology were obtained during a pilot measurement program initiated as a key component of the newly established WMO/GAW Urban Research Meteorology and Environment (GURME) project. Monthly measurements were obtained at 50 stations in Asia,Africa, South America,and Europe. The median SO2 concentrations vary from a high of 13 ppb at Linan,China,to o0.03 ppb at four stations. At 30 of 50 regional stations,the observed median concentrations are o1 ppb. Median ammonia concentrations range from 20 ppb at Dhangadi,India,to o1 ppb at nine stations. At 27 of regional stations,the ambient ammonia levels exceed 1 ppb. The median ozone concentrations vary from a maximum of 45 ppb at Waliguan Mountain,China,to 8 ppb in Petit Saut,French Guiana. In general,the highest ozone values are found in the mid- latitudes,with the Northern hemisp...