Variability of ENSO teleconnections indices, and its impacts on moroccan agriculture.
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| Title: | Variability of ENSO teleconnections indices, and its impacts on moroccan agriculture. |
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| Authors: | Peethani, Sujatha1 (AUTHOR) kadalisujatha2007@gmail.com, Pathakoti, Mahesh2 (AUTHOR), V, Mahalakshmi D.2 (AUTHOR), Kheir, Ahmed MS.1 (AUTHOR), Singh, Apoorva1 (AUTHOR), Govind, Ajit1 (AUTHOR) |
| Source: | Journal of Atmospheric & Solar-Terrestrial Physics. Dec2024, Vol. 265, pN.PAG-N.PAG. 1p. |
| Subjects: | El Niño, North Atlantic oscillation, Plant yields, Growing season, La Niña |
| Abstract: | In Morocco, drought periods have become more frequent and severe due to climate change, which has had a substantial effect on freshwater supply and agricultural output. The El Niño-Southern Oscillation (ENSO) and the influence of climatic variability were the main subjects of the current study, which made use of daily precipitation, maximum and minimum temperature data collected at 50 locations around the nation from 1990 to 2022. The study analysed Palmer Drought Severity Index (PDSI) over Morocco to evaluate the impact of climate indices such as the Oceanic Niño Index (ONI) and the North Atlantic Oscillation (NAO) on drought severity. It also investigated the changes in precipitation, temperature, and extreme event-related indices. Rainfall is used as a proxy for El Nino and La Nina, supported by a negative and significant correlation between Oceanic Nino Index (ONI) and rainfall. Attempted to understand the impact of the NAO on Morocco's agricultural production, particularly during the winter months. During negative NAO phases, winter temperatures can lead to reduced wheat yields by 35–45% during the El Niño years and decreased by 4–7% during the La Niña years compared to the actual yield. Relying on the NAO plays a crucial role in modulating the precipitation patterns, which implies that crop requires adequate soil moisture with no extreme temperature during the growing season in order to produce higher yield. ENSO events can indeed lead to these extreme conditions in selected locations, potentially impacting crop yields. • We evaluated changes in precipitation and temperature, as well as the severe indices that connect to extreme events by use of daily precipitation, maximum, and minimum temperature data collected at 50 locations across the country from 1990 to 2022. • The El Nio-Southern Oscillation (ENSO) is one of the most powerful sources of climate variability that has a direct impact on agricultural production. • The NAO has a significant impact on the harsh winter temperatures. Such connections, however, could not explain for the significant generalised warming patterns and drying history depicted in the image. During El Nio years over Morocco, the average wheat yield was 35–45% lower than the usual output and during La Nia years, wheat production was 4%–7% lower than the actual yield. • For a crop to produce a larger yield, the soil must be sufficiently moist and neither too hot or too cold throughout the growth season. Our findings imply that these parameters include, and the Crop requires adequate soil moisture with no extreme temperature during the growing season, in order to produce higher yield, our results suggest that these extreme conditions are likely effect during ENSO events in selected locations. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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