ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia
Por um escritor misterioso
Last updated 17 julho 2024
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Abstract. The El Niño–Southern Oscillation (ENSO) is a crucial driver of fire weather in Australia, with the correlation between ENSO and Australian fire weather having intensified over the past 2 decades. However, the underlying causes for this change have not been thoroughly investigated. In this study, we utilize reanalysis datasets and numerical model simulations to demonstrate that the Atlantic Multidecadal Oscillation (AMO) could potentially modulate the ENSO–Australian fire weather relationship. The correlation between ENSO and the Australian Fire Weather Index (FWI) increases from 0.17 to 0.70 as the AMO transitions from its negative to positive phase. This strengthening effect can be attributed to atmospheric teleconnection mechanisms. Specifically, the positive AMO phase, characterized by warming in the northern and tropical Atlantic, generates Rossby wave trains, leading to high-pressure systems over Australia. Consequently, local temperature and wind speed increase, while precipitation decreases. This signal, superimposed on ENSO, serves to amplify the ENSO effect on Australian fire weather.
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://ars.els-cdn.com/content/image/1-s2.0-S0048969723020168-gr1.jpg)
Influence of local scale and oceanic teleconnections on regional fire danger and wildfire trends - ScienceDirect
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://www.pmel.noaa.gov/pubs/outstand/mcph2969/images/fig01.jpg)
McPhaden et al. -- ENSO as an Integrating Concept in Earth Science
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://www.ipcc.ch/site/assets/uploads/sites/3/2019/11/IPCC-SROCC-CH_6_2.jpg)
Chapter 6: Extremes, Abrupt Changes and Managing Risks — Special Report on the Ocean and Cryosphere in a Changing Climate
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://ars.els-cdn.com/content/image/1-s2.0-S0048969723020168-gr6.jpg)
Influence of local scale and oceanic teleconnections on regional fire danger and wildfire trends - ScienceDirect
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://acp.copernicus.org/articles/23/13769/2023/acp-23-13769-2023-avatar-web.png)
ACP - Relations - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://i0.wp.com/judithcurry.com/wp-content/uploads/2022/08/Fig-2.8.png?fit=976%2C376&ssl=1)
The Sun-Climate Effect: The Winter Gatekeeper Hypothesis (II). Solar activity unexplained/ignored effects on climate
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://www.frontiersin.org/files/Articles/894779/fenvs-10-894779-HTML-r1/image_m/fenvs-10-894779-g006.jpg)
Frontiers ENSO Teleconnection to Interannual Variability in Carbon Monoxide Over the North Atlantic European Region in Spring
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://www.frontiersin.org/files/Articles/866241/feart-10-866241-HTML/image_m/feart-10-866241-g003.jpg)
Frontiers Atlantic Multidecadal Oscillation Modulates the Relation of ENSO With the Precipitation in the Central-Western Indian Ocean
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://acp.copernicus.org/articles/23/9217/2023/acp-23-9217-2023-f02-web.png)
ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Nino_Modok-PMM_connections.png/220px-Nino_Modok-PMM_connections.png)
Pacific Meridional Mode - Wikipedia
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://www.whoi.edu/wp-content/uploads/2019/03/graphics-To_IMS-NAOglobes.jpg)
El Niño & Other Oscillations - Woods Hole Oceanographic Institution
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://www.frontiersin.org/files/Articles/866241/feart-10-866241-HTML/image_m/feart-10-866241-g010.jpg)
Frontiers Atlantic Multidecadal Oscillation Modulates the Relation of ENSO With the Precipitation in the Central-Western Indian Ocean
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://wires.onlinelibrary.wiley.com/cms/asset/c330cd32-edba-475d-8cb5-32171757a62e/wcc823-fig-0010-m.jpg)
Variability and long‐term change in Australian monsoon rainfall: A review - Heidemann - 2023 - WIREs Climate Change - Wiley Online Library
![ACP - Atlantic Multidecadal Oscillation modulates the relationship between El Niño–Southern Oscillation and fire weather in Australia](https://journals.ametsoc.org/view/journals/clim/35/12/full-JCLI-D-21-0603.1-f8.jpg)
Atlantic Multidecadal Oscillation Modulates ENSO Atmospheric Anomaly Amplitude in the Tropical Pacific in: Journal of Climate Volume 35 Issue 12 (2022)
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