Temperature variations in the Walla Walla valley American Viticultural Area

Abstract

Variations in average growing season and ripening season temperatures within the Walla Walla Valley American Viticultural Area are related to elevation and regional and local topography. Downstream narrowing of the Walla Walla Valley creates a nocturnal cold air pool that is more pronounced during the August to October ripening season. Average growing season temperatures are generally higher and growing degree-days greater at lower elevations. Average temperatures increase with elevation to 450 m during the ripening season as temperature inversions become more pronounced and persistent. Cool air descending from the Blue Mountains lowers average growing and ripening season temperatures at sites near major streams. Adiabatic warming of down-sloping prevailing winds increases average growing season and ripening season temperatures near the base of Vansycle Ridge. Grapevines planted below 300 m have a much greater risk of damage from frosts and freezes. Variations in vineyard ground surface materials have no apparent effect on ambient air temperatures as measured by radiation shielded data loggers at a height of 1.5 m

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

Kevin R. POGUE and Gregory M. DERING

Department of Geology, Whitman College, Walla Walla, WA 99362 USA

Contact the author

Keywords

Walla Walla Valley, temperature, elevation, topography, growing degree-day

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Nitrogen metabolism in Kluyveromyces marxianus and Saccharomyces cerevisiae: towards a better understanding of fermentation aroma production

During wine alcoholic fermentation, yeasts produce volatile aroma compounds from sugar and nitrogen metabolism. Some of the metabolic pathways leading to these compounds have been known for more than a century.

Multi-trait selection in ancient grapevine varieties

The selection of ancient grapevine varieties aims to achieve genetic gains in several important traits that can make the variety more interesting for the objectives of the producers. Traditionally, yield and quality traits of the must have been considered for selection, but many others can be taken into account. Linear mixed models are fitted to the data to predict the empirical best linear unbiased predictors (EBLUPs) of genotypic effects for each evaluated trait, which will be the basis for selection.

Sorption of aroma compounds by commercial specific yeast derivatives and the influence of polyphenols

Specific inactivated yeast derivatives (SYDs) from S. cerevisiae are obtained through thermal, mechanical, and enzymatic processes and are used to enhance wine quality.

Mineral-wine profile and AI: wine authentication and identification

Enhancing the mineral wine profile: from authentication to identification by artificial intelligence for enhanced security. Analysis of a wine’s mineral concentration profile provides a distinctive fingerprint for each cuvée. Unlike organic profiles, this identification signature remains stable over time and can be deciphered using direct analysis by inductively coupled mass spectrometry (icp-ms).

Il sistema vigneto del Lago di Bolsena: caratterizzazione della produzione di Cannaiola di Marta

Il comprensorio del Lago di Bolsena (VT) è un territorio ad elevata vocazione vitivinicola in cui il paesaggio della vite storicamente persiste e caratterizza la fisionomia dei luoghi. Qui gli agroecosistemi viticoli possiedono una valenza ecologico-ambientale, storico-culturale ed economica di rilievo.