Descripción
Research on temperature anomalies in Colombia highlights the influence of the El Niño-Southern Oscillation (ENSO) phenomenon and global climate change. ENSO, in particular, induces marked variations in the region's extreme temperatures and precipitation, influencing water availability and agricultural productivity. During El Niño events, temperature increases are observed, while La Niña is associated with lower temperatures. On the other hand, long-term trends indicate an increase in the frequency and intensity of extreme temperature events, both high and low, attributed to climate change and natural climate variability.Using daily mean air temperature data at 2 meters above the surface from ERA5-Land for Bogotá, the relationship between extreme temperatures and the succession of El Niño and La Niña years, as well as long-term changes, was studied. From this time series, indices related to Cold Spell Duration Index (CSDI) and Warm Spell Duration Index (WSDI) were calculated, as well as the total count of very cold days (T10p) or very warm days (T90p) for each hydrological year considered (hydrological year from 01/06 of one year to 31/05 of the following year).
The conclusions indicated that the obtained extreme temperature indices follow the trends observed for mean temperature: warmer indices during El Niño years and colder indices during La Niña years. Furthermore, the long-term analysis indicates a trend towards "warming" of the indices (e.g., cold days tend to be less frequent, while warm days and warm spells will be more common).
It is concluded that temperature patterns in Colombia are transforming, with potential impacts on the country's ecology, hydrology, and socioeconomics.
| Período | 09 oct. 2024 → 11 oct. 2024 |
|---|---|
| Título del evento | Water Security and Climate Change 2024 |
| Tipo de evento | Conferencia |
| Número de la conferencia | 8 |
| Ubicación | Gießen, Alemania, HesseMostrar en mapa |
| Grado de reconocimiento | Internacional |