Xandre Chourio

Columbia University | CU · International Research Institute for Climate and Society

Up to fifteen tick-borne pathogens – including the agent of Lyme disease – continue to expand geographically in North America, invading populations that may be unaware of the risk. Process-based, mechanistic models have significantly deepened our understanding of the population dynamics of Ixodes scapularis and Ambylomma americanum ticks. We have d...

The Inter-Americas Seas (IAS), involving the Gulf of Mexico, the Caribbean and a section of the eastern tropical Pacific Ocean bordering Central America, Colombia and Ecuador, exhibits very active ocean-land-atmosphere interactions that impact socio-economic activities within and beyond the region, and that are still not well understood or represen...

The subseasonal-to-seasonal (S2S) predictive timescale, encompassing lead times ranging from 2 weeks to a season, is at the frontier of forecasting science. Forecasts on this timescale provide opportunities for enhanced application-focused capabilities to complement existing weather and climate services and products. There is, however, a ‘knowledge...

The provision of climate services has the potential to generate adaptive capacity and help coffee farmers become or remain profitable by integrating climate information in a risk-management framework. Yet, in order to achieve this goal, it is necessary to identify the local demand for climate information, the relationships between coffee yield and...

According to the World Food Programme (WFP, April 2020), the prevalence in Guatemala of stunting in children under the age of 5 reaches 46.5% nationally, and it climbs up to 70% in some departments, with peaks as high as 90% in the hardest hit municipalities. Food insecurity in Guatemala is driven by both climate and non-climate factors, and its pa...

Faced with the greatest public health crisis of our time, people must work together and learn from each other to overcome the complex challenges facing our communities, countries, and the world. Climate-related hazards are one of those challenges; they exacerbate already challenging public health conditions and impact not just people, but also the...

Common approaches to diagnose systematic model errors involve the computation of statistical metrics aimed at providing an overall summary of the performance of the model in reproducing the particular variables of interest in the study, normally tied to speciWc spatial and temporal scales. However, the evaluation of model performance is not always...

Aedes-borne diseases, such as dengue and chikungunya, are responsible for more than 50 million infections worldwide every year, with an overall increase of 30-fold in the last 50 years, mainly due to city population growth, more frequent travels and ecological changes. In the United States of America, the vast majority of Aedes-borne infections are...

Aedes-borne diseases, such as dengue and chikungunya, are responsible for more than 50 million infections worldwide every year, with an overall increase of 30-fold in the last 50 years, mainly due to city population growth, more frequent travels and ecological changes. In the United States of America, the vast majority of Aedes-borne infections are...

In the original version of the article contained errors in the fig 3 and 4 and captions of Figures 3 and 4 with respect to the panels in the top row.

While many Madden–Julian Oscillation (MJO) teleconnections are well documented, the significance of these teleconnections to agriculture is not well understood. Here we analyze how the MJO affects the climate during crop flowering seasons, when crops are particularly vulnerable to abiotic stress. Because the MJO is located in the tropics of the sum...

Aedes-borne diseases, such as dengue and chikungunya, are responsible for more than 50 million infections worldwide every year, with an overall increase of 30-fold in the last 50 years, mainly due to city population growth and more frequent travels. In the United States of America, the vast majority of Aedes-borne infections are imported from endem...

Successful climate services often involve the use of tailored regional climate forecasts at one or multiple timescales. The way those forecasts are implemented is not always straightforward, and depends on several different factors, like which variables, models and calibration methods to use, how to produce the ensemble and tailoring, or even how t...

La Cuenca del Lago de Maracaibo, ubicada en el occidente de Venezuela, es la zona con mayor descargas electro-atmosféricas a nivel mundial, superando los 200 rayos/km2 por año. Estos eventos son tan comunes que tienen nombre propio --los Relámpagos del Catatumbo--, estando asociados a un conjunto de tormentas que ocurre en promedio unas 260 noches...

This study explores the predictive skill of seasonal rainfall characteristics for the irst rainy (and planting) season, May–June, in Central America. Statistical predictive models were built using a Model Output Statistics (MOS) technique based on canonical correlation analysis, in which variables that forecast with the Climate Forecast System vers...

Given knowledge at the time, the recent 2015-2016 zika virus (ZIKV) epidemic probably could not have been predicted. Without the prior knowledge of ZIKV being already present in South America, and given the lack of understanding of key epidemiologic processes and long-term records of ZIKV cases in the continent, the best related prediction was for...

Given knowledge at the time, the recent 2015-2016 zika virus (ZIKV) epidemic probably could not have been predicted. Without the prior knowledge of ZIKV being already present in South America, and given the lack of understanding of key epidemiologic processes and long-term records of ZIKV cases in the continent, the best related prediction was for...

Using the Datoteca, a local branch of the International Research Institute for Climate and Society’s (IRI) Data Library, the Observatory is developing a web service that (a) fully considers the contribution of climate as a partial driver of the disease seasonality, (b) uses the most updated health and socio-economic information relevant to the prob...

Se presenta un resumen de las actividades de la expedición realizada entre el 12 y 15 de abril de 2015 a la zona del Catatumbo, en el Sur de la Cuenca del Lago de Maracaibo (CLM). En esta actividad participaron 14 expedicionarios, pertenecientes al Centro de Modelado Científico (CMC) de la Universidad del Zulia, al Servicio de Meteorología de la Av...

The Latin American Observatory, or OLE2 (Muñoz et al., 2010), is an informal regional partnership started in 2008 with the aim of enhancing the collaboration between national weather services (NWS) and research and development institutes in Latin America. OLE2 provides scientific support, training, and additional (weather and) climate services to p...

It is not common to find web pages that show interactive multi-user 3D virtual environments as part of their contents without requiring special plug-ins for the web browser to be able to execute such an application. This paper presents a new architecture based on Java technology to create web portals which include 3D virtual scenarios that many use...

ANDESGRID is a project coordinated by Centro de Modelado Cient´ıfico (CMC) of Zulia University, in Venezuela, aiming to provide a common Grid-based infrastructure for Geoscience HPC and data sharing to institutions located in the six Andean Countries (Venezuela, Colombia, Ecuador, Peru, Bolivia and Chile) with and without NRENs connection, dependin...