A Later Onset of the Rainy Season in California
Abstract
Californian hydroclimate is strongly seasonal and prone to severe water shortages. Recent changes in climate trends have induced shifts in seasonality, thus exacerbating droughts, wildfires, and adverse water shortage effects on the environment and economy. Previous studies have examined the timing of the seasonal cycle shifts mainly as temperature driven earlier onset of the spring season. In this paper, we address quantitative changes in the onset, amounts, and termination of the precipitation season over the past 6 decades, as well as the large‐scale atmospheric circulation underpinning the seasonal cycle changes. We discover that the onset of the rainy season has been progressively delayed since the 1960s, and as a result the precipitation season has become shorter and sharper in California. The progressively later onset of the rainy season is shown to be related to the summer circulation pattern extending into autumn across the North Pacific, in particular, a delay in the strength...ening of the Aleutian Low and later southward displacement of the North Pacific westerlies.
Keywords:
rainfall / climate changeSource:
Geophysical Research Letters, 2021, 48, e2020GL090350Publisher:
- American Geophysical Union, John Wiley & Sons
Funding / projects:
- Studying climate change and its influence on environment: impacts, adaptation and mitigation (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43007)
- Serbian geodetic infrastructure advancement for the needs of a modern state survey (RS-MESTD-Technological Development (TD or TR)-36020)
URI
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL090350https://grafar.grf.bg.ac.rs/handle/123456789/2356
Collections
Institution/Community
GraFarTY - JOUR AU - Luković, Jelena AU - Chiang, John C. H. AU - Blagojević, Dragan AU - Sekulić, Aleksandar PY - 2021 UR - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL090350 UR - https://grafar.grf.bg.ac.rs/handle/123456789/2356 AB - Californian hydroclimate is strongly seasonal and prone to severe water shortages. Recent changes in climate trends have induced shifts in seasonality, thus exacerbating droughts, wildfires, and adverse water shortage effects on the environment and economy. Previous studies have examined the timing of the seasonal cycle shifts mainly as temperature driven earlier onset of the spring season. In this paper, we address quantitative changes in the onset, amounts, and termination of the precipitation season over the past 6 decades, as well as the large‐scale atmospheric circulation underpinning the seasonal cycle changes. We discover that the onset of the rainy season has been progressively delayed since the 1960s, and as a result the precipitation season has become shorter and sharper in California. The progressively later onset of the rainy season is shown to be related to the summer circulation pattern extending into autumn across the North Pacific, in particular, a delay in the strengthening of the Aleutian Low and later southward displacement of the North Pacific westerlies. PB - American Geophysical Union, John Wiley & Sons T2 - Geophysical Research Letters T1 - A Later Onset of the Rainy Season in California IS - e2020GL090350 VL - 48 DO - 10.1029/2020GL090350 ER -
@article{ author = "Luković, Jelena and Chiang, John C. H. and Blagojević, Dragan and Sekulić, Aleksandar", year = "2021", abstract = "Californian hydroclimate is strongly seasonal and prone to severe water shortages. Recent changes in climate trends have induced shifts in seasonality, thus exacerbating droughts, wildfires, and adverse water shortage effects on the environment and economy. Previous studies have examined the timing of the seasonal cycle shifts mainly as temperature driven earlier onset of the spring season. In this paper, we address quantitative changes in the onset, amounts, and termination of the precipitation season over the past 6 decades, as well as the large‐scale atmospheric circulation underpinning the seasonal cycle changes. We discover that the onset of the rainy season has been progressively delayed since the 1960s, and as a result the precipitation season has become shorter and sharper in California. The progressively later onset of the rainy season is shown to be related to the summer circulation pattern extending into autumn across the North Pacific, in particular, a delay in the strengthening of the Aleutian Low and later southward displacement of the North Pacific westerlies.", publisher = "American Geophysical Union, John Wiley & Sons", journal = "Geophysical Research Letters", title = "A Later Onset of the Rainy Season in California", number = "e2020GL090350", volume = "48", doi = "10.1029/2020GL090350" }
Luković, J., Chiang, J. C. H., Blagojević, D.,& Sekulić, A.. (2021). A Later Onset of the Rainy Season in California. in Geophysical Research Letters American Geophysical Union, John Wiley & Sons., 48(e2020GL090350). https://doi.org/10.1029/2020GL090350
Luković J, Chiang JCH, Blagojević D, Sekulić A. A Later Onset of the Rainy Season in California. in Geophysical Research Letters. 2021;48(e2020GL090350). doi:10.1029/2020GL090350 .
Luković, Jelena, Chiang, John C. H., Blagojević, Dragan, Sekulić, Aleksandar, "A Later Onset of the Rainy Season in California" in Geophysical Research Letters, 48, no. e2020GL090350 (2021), https://doi.org/10.1029/2020GL090350 . .