H2020Индивидуална стипендия2021–2023

ICECAP · Investigation of Climatic Events - Cooling and Ash in the Palaeogene

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-10-18 → 2023-10-17
Финансиране от ЕС: 214 159 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Климатичните събития от палеогенния период, като например внезапното охлаждане и образуването на минерала глендонит, се анализират чрез геоложки проби. Това помага за по-доброто разбиране на механизмите за промяна на климата и подобрява прогнозите за бъдещото затопляне на Земята.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Investigation of Climatic Events - Cooling and Ash in the Palaeogene

ICECAP set out to improve understanding of regional to global climate feedback mechanisms during periods of rapidly evolving CO2 levels, through the study of a period analogous to the near-future Earth, namely, the Paleogene. ICECAP also aimed to solve the question of glendonite significance in the geological record (from Phanerozoic to Recent). This project has implications for both future climate forecasting under predicted CO2 levels, and for palaeoclimatic reconstructions on regional and global scales throughout geological time. To these aims, ICECAP had the following specific objectives: (1) To develop a high-resolution climatic reconstruction for the Palaeogene successions of Denmark and Northeast Atlantic Margin, identifying the magnitude and duration of these cooling events within the longer-term trends and to examine their extent by comparison between the two cores and with published global records from this time. (2) To obtain multi-proxy, quantitative temperature reconstructions for glendonites and glendonite-bearing sedimentary horizons from other Palaeogene successions around the globe in order to understand the climatic significance of glendonites in the geological record. (3) To generate a database of organic and inorganic chemical data for glendonites from Palaeogene successions around the globe, that will be used to understand the (bio)geochemical requirements for glendonite formation, with implications for the significance of glendonites in the geological record as palaeo-environmental indicators. (4) To use the climatic and geochemical data to develop a model for the mechanism for transient cooling events and glendonite formation in the Danish early Palaeogene succession, and so solve how regionalised cooling can occur in a greenhouse world. ICECAP met these objectives through publication of the planned deliverables laid out in the project proposal.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The Palaeogene period in the early Cenozoic (66 – 23 million year ago) saw the transition of the Earth’s climate state from Greenhouse (with no polar ice-caps, as characterised the entire Mesozoic) to Icehouse (as we see today with Polar ice caps). Understanding the dynamics in climate during such an unstable period of Earth’s climatic history is crucial for accurate forecasting of future climate change under anthropogenically-elevated atmospheric CO2. Whilst many studies have looked at particular episodes during this period (focusing on hyperthermals or the descent to icehouse in the Oligocene), there is a lack of studies which look holistically at the entire period. Furthermore, sedimentological evidence that suggests transient cool periods (local or global in scale) may have punctuated the long-term warmth of the early part of the Palaeogene have been largely overlooked as this appears to disagree with published geochemical proxy studies. This project proposes to Investigate Climatic Events, relating Cooling and Ash in the Palaeogene period (ICECAP), by generating a high resolution, multi-proxy temperature reconstruction for the exceptionally well-preserved, continuous Palaeogene succession from northern Denmark, which contain numerous thick ash horizons and enigmatic deposits associated with cold water (“glendonites”). Geochemical analysis and temperature reconstructions for other Palaeogene sites containing cold-water indicators will be undertaken in order to understand the global palaeoclimatic significance of the Danish glendonites.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITETET I OSLO · OsloКоординаторНорвегия