10 documents found, page 1 of 1
Heat islands in Manaus City: Study with remote sensing data, modeling and meteo...
Corrêa, Polari Batista; Cândido, Luiz Antônio; Souza, Rodrigo Augusto Ferreira de; Andreoli, Rita Valéria; Kayano, Mary ToshieThe heat island phenomenon (HI) in the city of Manaus was studied using the urban climate modeling with the Weather Research and Forecasting (WRF) model and meteorological weather station data. The surface temperature (ST) data from the environmental satellite MODIS Aqua, product MYD11A2 with a horizontal resolution of 1 km by 1 km for the period 2002 to 2012 were used to evaluate the urbanization process in Ma...
Spatio-temporal analysis of the droughts in Cali, Colombia and their primary re...
Cerón, Wilmar Loaiza; Carvajal-Escobar, Yesid; Souza, Rita Valeria Andreoli de; Kayano, Mary Toshie; López, Nathalia GonzálezThis paper analyzed the spatio-temporal variability of droughts in Cali, Colombia and their primary relations to the El Nino Southern Oscillation (ENSO). The Standardized Precipitation Index (SPI) was used to detect drought events from monthly rainfall data of 24 stations well spread over Cali during 1971-2011. The SPI provided the drought intensity, magnitude, frequency, and the minimum rainfall thresholds, ma...
Spatio-Temporal Variability of Carbon Monoxide Over South America Using Satelli...
dos Santos, Yara Luiza Farias; Souza, Rodrigo Augusto Ferreira de; Souza, Jaidete Monteiro de; Andreoli, Rita Valéria; Kayano, Mary ToshieUsing the information of the Earth Observation System/AQUA (EOS/AQUA) satellite during the 2003-2012 period, the present work investigates the tropospheric carbon monoxide (CO) behavior over the central South American region, and its spatiotemporal variability. The results show a well-defined seasonal behavior of the CO concentration, with decrease during the wet season and increase during dry season, due to th...
The influence of the atlantic multidecadal oscillation on the choco low-level j...
Cerón, Wilmar Loaiza; Andreoli, Rita Valéria; Kayano, Mary Toshie; Souza, Rodrigo Augusto Ferreira de; Jones, Charles; Carvalho, Leila M.V.This study examines the influence of the Atlantic Multidecadal Oscillation (AMO) on the Choco Low-level Jet (CJ) variations during the 1983-2016 period. Considering the September-November (SON) 925 hPa zonal wind index in the CJ core, a significant breakpoint occurs in 1997 with larger values after 1997. The changes in the CJ and Caribbean Low-Level Jet (CLLJ), and their related ocean-atmospheric patterns and i...
Streamflow intensification driven by the atlantic multidecadal oscillation (AMO...
Cerón, Wilmar Loaiza; Kayano, Mary Toshie; Andreoli, Rita Valéria; Ávila, Álvaro; Canchala, Teresita; Frances, Felix; Rivera, Irma AyesThe impact of the Atlantic Multidecadal Oscillation (AMO) on the variations in the streamflow in the Atrato River Basin (ARB) during the 1965-2016 period was analyzed here by considering the cold (1965-1994) and warm (1995-2015) phases of this oscillation. The mean streamflow increased after 1994 (AMO phase change). This increase is related to the strengthening of the zonal gradients of the sea surface temperat...
Evaluation of the WRF ability to represent the precipitation in the amazon usin...
Sousa, Jeanne Moreira de; Cândido, Luiz Antônio; Silva, Júlio Tóta da; Andreoli, Rita Valéria; Kayano, Mary Toshie; Manzi, Antônio OcimarPrecipitation over the northern Amazon during the austral summer and autumn seasons of the 1988-1999 was simulated using the Regional Weather Research and Forecasting (WRF) model, with downscaling approach with nested domains of 45 and 15 km. The boundary and initial conditions were obtained from the Climate Forecast System Reanalysis (CFSR) of the National Centers for Environmental Prediction (NCEP). The model...
American cutaneous leishmaniasis cases in the metropolitan region of manaus, Br...
Souza, Rodrigo Augusto Ferreira de; Andreoli, Rita Valéria; Kayano, Mary Toshie; Carvalho, Afrânio LimaA temporal series of the normalized difference vegetation index (NDVI) and other environmental parameters covering the years 2002- 2009 was used for the study of the potential association between the climate and the number of cases of American cutaneous leishmaniasis (CL) in Manaus Metropolitan Region (MMR), State of Amazonas, Brazil. The results show that CL has a marked seasonality and a strong linkage with l...
Streamflow variability in colombian pacific basins and their teleconnections wi...
Canchala, Teresita; Cerón, Wilmar Loaiza; Frances, Felix; Carvajal-Escobar, Yesid; Andreoli, Rita Valéria; Kayano, Mary ToshieOceanic-atmospheric phenomena of different time scales concurrently might affect the streamflow in several basins around the world. The Atrato River Basin (ARB) and Patia River Basin (PRB) of the Colombian Pacific region are examples of such basins. Nevertheless, the relations between the streamflows in the ARB and PRB and the oceanic-atmospheric factors have not been examined considering different temporal sca...
Characterization of the different el niño types and their impacts in South Amer...
Viegas, Juarez; Andreoli, José Rita Valéria; Kayano, Mary Toshie; Cândido, Luiz Antônio; Souza, Rodrigo Augusto Ferreira de; Hall, Denisi HolandaRecent studies have pointed out to the existence of two El Niño (EN) types: Eastern Pacific or Canonical (EP) EN and Central Pacific or Modoki (CP) EN. In the present study, the observed and simulated data in three models of the Coupled Model Intercomparison Project phase 5 (CMIP5) were used to evaluate the impacts of two EN types on the South American precipitation from June-August of the EN onset year to Marc...
Influence of EI Niño-Southern oscillation and equatorial Atlantic on rainfall o...
Araújo, Rosimeire Gonzalez; Andreoli, Rita Valéria; Cândido, Luiz Antônio; Kayano, Mary Toshie; Sousa, Rodrigo Augusto Ferreira deThe impacts of anomalous events in the Pacific Ocean associated with the El Niño - Southern Oscillation (ENSO) on rainfall over northern and northeastern regions of South America were evaluated for the period from 1900 to 2007 using composite analyses. The El Niño (La Niña) events in the Pacific, that together with a cold (warm) Atlantic Equatorial Mode (AEM) form an interbasin gradient between the Pacific and ...