Update of bioclimatic atlas of jalisco state [Actualización del Atlas Bioclimático del estado de Jalisco]

In this new version of the bioclimatic Atlas of Jalisco State, we present a more detailed description of bioclimate conditions for municipalities in the state, obtained using the most current methodology and larger meteorological database, than used in the previous version, by Amador SEMADES (2009). Processed data were used from 1971-2000 from the Climatological Normal data of the National weather Service belonging to the National Water Commission. The maps were developed using the ArcGIS Geographic Information System 9.3, with monthly and annual seasonality. It is observed that in the months of January to May the predominant bioclimate in most of the state is dry extremes, with lesser occurrence of warm and cold, but from June, the bioclimate changes to warm, with occurrence temperate days. In July temperate bioclimate predominates with lesser occurrence of warm and August is characterized by warm; then from September to October temperate dominates again, followed by warm bioclimate. Finally in November and December extremely dry is dominant again and followed by temperate and cold. As for the annual distribution, since the average bioclimate is a balance of extremes, most of the state has temperate bioclimate

Update of bioclimatic atlas of jalisco state [Actualizaci�n del Atlas Bioclim�tico del estado de Jalisco]

In this new version of the bioclimatic Atlas of Jalisco State, we present a more detailed description of bioclimate conditions for municipalities in the state, obtained using the most current methodology and larger meteorological database, than used in the previous version, by Amador SEMADES (2009). Processed data were used from 1971-2000 from the Climatological Normal data of the National weather Service belonging to the National Water Commission. The maps were developed using the ArcGIS Geographic Information System 9.3, with monthly and annual seasonality. It is observed that in the months of January to May the predominant bioclimate in most of the state is dry extremes, with lesser occurrence of warm and cold, but from June, the bioclimate changes to warm, with occurrence temperate days. In July temperate bioclimate predominates with lesser occurrence of warm and August is characterized by warm; then from September to October temperate dominates again, followed by warm bioclimate. Finally in November and December extremely dry is dominant again and followed by temperate and cold. As for the annual distribution, since the average bioclimate is a balance of extremes, most of the state has temperate bioclimate

Climatology of severe local thunderstorms (TLS) in the Metropolitan Area of Guadalajara [Climatología de las tormentas eléctricas locales severas (TELS) en la Zona Metropolitana de Guadalajara]

The presence of severe weather phenomena (tornados, hailstorms and linear winds with destructive gusts) is related to important changes in the morphology of the thunderstorms. The thunderstorms that reach that stage are considered as a special type of thunderstorms called local severe thunderstorms (TELS). The development of TELS in the Metropolitan Area of Guadalajara (ZMG) is a reality and should be considered in the protection of society due to the losses of lives, material damages and considerable effects that happen as a consequence of these. As we don't have a chronology of TELS in ZMG it was necessary to make a compilation of them as base to their climatology. Among the results obtained is that TELS happens from May until November, but especially in the months of June, July and August. Most happen during hours of the afternoon or of the night, but not a insignificant group also happens during the dawn. It is established that TELS constitute an important element of the climate of ZMG that cannot be ignored from the scientific point of view and much less in practice, for the effects that takes place in many of them

Climatology of severe local thunderstorms (TLS) in the Metropolitan Area of Guadalajara [Climatología de las tormentas eléctricas locales severas (TELS) en la Zona Metropolitana de Guadalajara]

The presence of severe weather phenomena (tornados, hailstorms and linear winds with destructive gusts) is related to important changes in the morphology of the thunderstorms. The thunderstorms that reach that stage are considered as a special type of thunderstorms called local severe thunderstorms (TELS). The development of TELS in the Metropolitan Area of Guadalajara (ZMG) is a reality and should be considered in the protection of society due to the losses of lives, material damages and considerable effects that happen as a consequence of these. As we don't have a chronology of TELS in ZMG it was necessary to make a compilation of them as base to their climatology. Among the results obtained is that TELS happens from May until November, but especially in the months of June, July and August. Most happen during hours of the afternoon or of the night, but not a insignificant group also happens during the dawn. It is established that TELS constitute an important element of the climate of ZMG that cannot be ignored from the scientific point of view and much less in practice, for the effects that takes place in many of them

The spatial-temporal distribution of the atmospheric polluting agents during the period 2000-2005 in the Urban Area of Guadalajara, Jalisco, Mexico

In the large cities, the disordered urban development, the industrial activities, and the transport, have caused elevated concentrations of polluting agents and possible risks to the health of the population. The metropolises located in valleys with little ventilation (such as the Urban Area of Guadalajara: UAG) present low dispersion of polluting agents can cause high risk of respiratory and cardiovascular diseases. The objective of this work was to describe the spatial-temporal distribution of the atmospheric polluting agents: carbon monoxide (CO), nitrogen dioxide (NO2), sulfur dioxide (SO2), particles smaller than 10 microns (?m) (PM10) and ozone (O3) in the UAG during the period 2000-2005. A spatial-temporal distribution analysis was made by means of graphic interpolation (Kriging method) of the statistical parameters of CO, NO2, SO2, PM10 and O3 with the collected data from eight stations of atmospheric monitoring in the UAG. The results show that the distributions of the atmospheric polluting agents are variable during the analyzed years. The polluting agent with highest concentration is PM10 (265.42 ?g/m3), followed by O3 (0.11 ppm), NO2 (0.11 ppm), CO (9.17 ppm) and SO2 (0.05 ppm). The most affected zone is the southeast of the UAG. The results showed that an important percentage of days exceed the Mexican norms of air quality (93-199 days/year). © 2008