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Agricultural droughts will continue across water-scarce Central Asia, says study

Phys.org/news (JANUARY 12, 2023)

Whether the worsening agriculture droughts will continue in the future is of great concern to both the public and the scientific community.

Titre : Agricultural droughts will continue across water-scarce Central Asia, says study

Phys.org/news (JANUARY 12, 2023)

Présentation
A severe agriculture drought swept Central Asia in 2021 in its early growing season, causing mass die-offs of crops and livestock and leading to increased food prices. This harsh drought is not an independent event but an intensification of a drying trend since the 1990s. Whether the worsening agriculture droughts will continue in the future is of great concern to both the public and the scientific community.

Dr. Jiang Jie and Prof. Zhou Tianjun from the Institute of Atmospheric Physics (IAP) of the Chinese Academy of Sciences have investigated past changes in agriculture droughts across Central Asia and made projections about future changes. They found that the aggravation of agricultural droughts across southern Central Asia in its early growing season since 1992 was caused by the combination of anthropogenic forcing and internal variability associated with the Interdecadal Pacific Oscillation (IPO). They also found that human-induced reduction in soil moisture will be aggravated in the future due to the rapidly warming climate.

The researchers found that anthropogenic external forcing and the natural internal variability of the climate system together have led to aggravated droughts since the 1990s by modulating long-term changes in meteorological factors, including temperature and precipitation.

Source  : Chinese Academy of Sciences

Annonce (Phys.org/news)

Page publiée le 13 janvier 2023