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Significant increase of global anomalous moisture uptake feeding landfalling Atmospheric Rivers

Author

Listed:
  • Iago Algarra

    (CIM-UVIGO, Universidade de Vigo)

  • Raquel Nieto

    (CIM-UVIGO, Universidade de Vigo)

  • Alexandre M. Ramos

    (Universidade de Lisboa)

  • Jorge Eiras-Barca

    (CIM-UVIGO, Universidade de Vigo
    University of Illinois at Urbana-Champaign)

  • Ricardo M. Trigo

    (Universidade de Lisboa
    Universidade Federal do Rio de Janeiro)

  • Luis Gimeno

    (CIM-UVIGO, Universidade de Vigo)

Abstract

One of the most robust signals of climate change is the relentless rise in global mean surface temperature, which is linked closely with the water-holding capacity of the atmosphere. A more humid atmosphere will lead to enhanced moisture transport due to, among other factors, an intensification of atmospheric rivers (ARs) activity, which are an important mechanism of moisture advection from subtropical to extra-tropical regions. Here we show an enhanced evapotranspiration rates in association with landfalling atmospheric river events. These anomalous moisture uptake (AMU) locations are identified on a global scale. The interannual variability of AMU displays a significant increase over the period 1980-2017, close to the Clausius-Clapeyron (CC) scaling, at 7 % per degree of surface temperature rise. These findings are consistent with an intensification of AR predicted by future projections. Our results also reveal generalized significant increases in AMU at the regional scale and an asymmetric supply of oceanic moisture, in which the maximum values are located over the region known as the Western Hemisphere Warm Pool (WHWP) centred on the Gulf of Mexico and the Caribbean Sea.

Suggested Citation

  • Iago Algarra & Raquel Nieto & Alexandre M. Ramos & Jorge Eiras-Barca & Ricardo M. Trigo & Luis Gimeno, 2020. "Significant increase of global anomalous moisture uptake feeding landfalling Atmospheric Rivers," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18876-w
    DOI: 10.1038/s41467-020-18876-w
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    Cited by:

    1. José C. Fernández-Alvarez & Albenis Pérez-Alarcón & Jorge Eiras-Barca & Stefan Rahimi & Raquel Nieto & Luis Gimeno, 2023. "Projected changes in atmospheric moisture transport contributions associated with climate warming in the North Atlantic," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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