A 4-week advance in the growing season in Napa Valley, California, USA

Nicholas, Kimberly A. (författare): Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,LUCSUS,Samhällsvetenskapliga institutioner och centrumbildningar,Samhällsvetenskapliga fakulteten,LU profilområde: Naturbaserade framtidslösningar,Lunds universitets profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,LUCSUS (Lund University Centre for Sustainability Studies),Departments of Administrative, Economic and Social Sciences,Faculty of Social Sciences,LU Profile Area: Nature-based future solutions,Lund University Profile areas

(creator_code:org_t)

2023
2023
Engelska.
Ingår i: International Journal of Climatology. - 0899-8418. ; 43:12, s. 5586-5603

Relaterad länk:: http://dx.doi.org/10... (free); visa fler...; https://lup.lub.lu.s...; https://doi.org/10.1...; visa färre...

Abstract Ämnesord

Stäng

The growing season start and duration, along with other temperature-related measures of importance to premium wine grapes in Napa Valley, California have changed as climate over the western United States has warmed. The growing season start has varied from year to year with a standard deviation of about 3 weeks, but over the 1958–2016 record a linear fit to the time sequence shows it advanced by more than 4 weeks. Over the study period, advances in the growing season were strongly influenced by temperature increases beginning in the late 1960s with warm anomalies generally persisting through recent years. The date upon which the growing season accumulated 1400 growing degree-days also shifted earlier by about 4 weeks. Other measures swung to a warmer status, including the mean temperature of the last 45 days of the growing season, which warmed by over 1.5°C. Warming days and especially warming nights contributed to the growing season advance as well as trends towards warmer expressions of other viticultural measures. Years with earlier and warmer growing seasons experienced a substantial reduction in the number of daily cool extremes, and an increase in daily warm extremes, including the number of days whose temperature reaches or exceeds 35°C.

Av författaren/redakt...: Cayan, Daniel R.; DeHaan, Laurel; Tyree, Mary; Nicholas, Kimber ...

Om ämnet

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