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Did recent sea surface temperature warming reinforce the extreme East Asian summer monsoon precipitation in 2020? — arXiv:2609.02545

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.02545
License (as archived): CC0-1.0
Archived: 2026-10-17T06:15:31.926Z
SHA-256 of the archived text: 9f43dd1c1c79178e3e279e4a3d0fe5de0ad4cc2d168b8255c7006029d6b179b2
Stable URL of this page: https://metraipolis.com/documento/dc_2abcedca6754

How to cite

Did recent sea surface temperature warming reinforce the extreme East Asian summer monsoon precipitation in 2020? — arXiv:2609.02545 — arXiv (en), https://arxiv.org/abs/2609.02545 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_2abcedca6754 (Metraipolis archive dc_2abcedca6754, sha256 9f43dd1c1c79178e3e279e4a3d0fe5de0ad4cc2d168b8255c7006029d6b179b2)

BibTeX

@misc{dc2abcedca6754,
  title = {Did recent sea surface temperature warming reinforce the extreme East Asian summer monsoon precipitation in 2020? — arXiv:2609.02545},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.02545},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_2abcedca6754; sha256 9f43dd1c1c79178e3e279e4a3d0fe5de0ad4cc2d168b8255c7006029d6b179b2},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.02545. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

We analyzed the possible effects of recent sea surface temperature (SST) warming on the extraordinary East Asian summer monsoon (EASM) precipitation in 2020 summer. The dynamic and thermodynamic impacts of SST are examined by conducting regional climate model experiments with observed SST and cold SST where the 22-year SST trend is removed. In the presence of warm SST, precipitation increases in low latitudes but decreases in the EASM region. This dipolar precipitation change pattern opposes the precipitation anomalies in 2020 summer, indicating that the extraordinary 2020 EASM precipitation is not likely driven by recent SST warming. The warm SST suppresses the western North Pacific subtropical high expansion and weakens the southwesterly from the South China Sea toward the EASM region. In terms of large-scale atmospheric circulations, SST-induced wind changes strengthen the local Walker circulation in the South China Sea and the Philippines and the local Hadley circulation across the EASM region. These support the reduced EASM rainfall in the control experiment compared to the cold SST experiment and imply that the precipitation reduction by dynamical effects could exceed the precipitation increase by thermodynamic effects in the EASM region under warm SST.

Tema degli esploratori: terra, clima ed energia (retro-catalogo arXiv: annunci del 2026-09-03 in physics.ao-ph).
Categorie arXiv: Atmospheric and Oceanic Physics (physics.ao-ph).
Pagina del lavoro: https://arxiv.org/abs/2609.02545 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-17T05:53:01.176Z dalla pagina https://arxiv.org/catchup/physics.ao-ph/2026-09-03?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).