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The road to a carbon neutral Intermountain West: Arizona Stakeholder Workshop Report, September 2021
Workshop report of general outcomes from stakeholder discussions regarding the planning of the decarbonization of the state of Arizona as part of a regional effort.

We analyze current approaches to carbon accounting for removed carbon sold on carbon markets, focusing on carbon crediting under the framing of a remaining carbon budget, the issue of durability, and approaches to accounting methodologies. We explore the topic of mixing carbon with other problems in developing carbon accounting methodologies and highlight the open policy questions. We conclude with a suggested framework for accounting for carbon removal accounting that simplifies climate action and enables a world with negative carbon emissions.

An exploration of the potential for a digital twin for direct air capture: background, classification, and integration.

Workshop report on socio-economic and technical discussions Direct Air Capture as a technology for the climate transition.


The Italian organ Mass begins with the Faenza Codex of c.1430, which contains the earliest surviving liturgical music for organ. Over a century would pass before Girolamo Cavazzoni published his three organ Masses in 1543: Mass IV (for feasts of apostles), Mass IX (for Marian feasts) and Mass XI (for typical Sundays of the year). The prevalence of publishing in Venice and the flourishing liturgical culture at San Marco led two notable organists, Andrea Gabrieli and Claudio Merulo, to publish their own Masses in 1563 and 1568. Both composers cultivated imitation and figurative lines which were often replete with ornamentation.
Frescobaldi’s Fiori musicali, published in Venice in 1635, represents the pinnacle of the Italian organ Mass. Reflecting the type of music he performed liturgically at San Pietro in Rome, this publication includes several new genres: canzonas after the reading of the Epistle and after Communion; ricercars after the Credo; and toccatas to be played during the Elevation of the Host. Frescobaldi’s music shows unparalleled mastery of counterpoint and invention of figuration. His liturgical music casts a long shadow over the three composers who published organ Masses in the decade following Fiori musicali: Giovanni Salvatore, Fra Antonio Croci and Giovanni Battista Fasolo.
This comprehensive look at Italian organ Masses from the 15th-17th centuries reveals the musical creativity inspired by the Catholic liturgy. Perhaps because of their practical use, these organ works are often neglected, mentioned merely as addenda to the other accomplishments of these composers. Hopefully insight into the contents of each organ Mass, along with the information about their style and aspects of performance practice, will make these musical gems more accessible to contemporary organists.

The primary organ composers of the Restoration period are Matthew Locke, John Blow, and Henry Purcell; these three musicians began to take advantage of new possibilities in organ composition, particularly the use of two-manuals with a solo register, and their writing displays the strong influence of French and Italian compositional styles. Each adapts Continental forms and techniques for the English organ, drawing from such forms as the French overture and récit pour le basse et dessus, and the Italian toccata and canzona. English organ composers from the Restoration period borrow form, stylistic techniques, ornamentation, and even direct musical quotations, to create a body of repertoire synthesizing both French and Italian styles.



Five organ builders were interviewed regarding their views on sustainable materials. In addition, the author consulted the websites of nine national and four international organ builders for information about sustainability, indicating that each organ builder defines the term somewhat differently. Decisions on the woods and metals to be used in building or refurbishing an existing organ are based more on the visual appearance, the sound desired, and the potential for reuse of existing materials. A number of sustainability practices are currently in use by organ builders in the United States and Europe. These include the reuse of transportation boxes, efforts towards recycled metal and wood pipework, and the use of high efficiency lighting.
The investigations into sustainable practice that are presented here document a variety of approaches to sustainability in organ building in the United States, Canada and Europe. This research should assist in the evaluation of further efforts to conserve valuable resources while ensuring the high quality of sound that has characterized the organ throughout its long history.