H2020Индивидуална стипендия2020–2023

CYCLOCARB · Oceanic Carbon Cycling Response to Global Temperature Changes

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

Период: 2020-04-01 → 2023-05-01
Финансиране от ЕС: 277 062 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Връзката между глобалните температури и въглеродния цикъл в океаните се анализира чрез микрофосили от седиментни ядра. Данните помагат за проверка на климатичните модели и по-добро разбиране на процесите, които влияят на бъдещето на планетата.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Oceanic Carbon Cycling Response to Global Temperature Changes

Anthropogenic changes to the Earth's carbon cycle pose significant environmental and societal challenges for the coming centuries. The increasing levels of atmospheric CO2 are already impacting the climate and the ocean's carbon cycle, resulting in rapid global warming, rising sea levels, and ocean acidification, all of which have adverse effects on human societies. To forecast the future, we rely on climate models; however, these models cannot be thoroughly tested as climate observations typically span less than 150 years. Geological records that reveal evidence of past climate and carbon cycle variations offer a unique way to contextualize ongoing changes and evaluate the performance of climate models over timeframes surpassing the instrumental record of the past few decades. The CYCLOCARB project aims to assess the interactions between global climate changes and the ocean's carbon reservoir in the past. By utilizing a specialized database of paleoenvironmental indicators, the project provides new insights into carbon cycling and global temperature changes. The CYCLOCARB project has successfully described global and regional temperature variations, shedding light on the underlying processes involved, particularly the differing sensitivity of oceanic and continental surfaces to climate drivers and feedback mechanisms. Additionally, studying carbon cycle indicators in the ocean based on microfossils obtained from sediment cores revealed a strong correlation between atmospheric pCO2 variations and physical and biological exchanges between the ocean's surface and its depths on glacial-interglacial timescales. Therefore, the results of the CYCLOCARB project provide clear benchmarks for climate models, as their ability to accurately replicate past climate variations in both space and time will increase confidence in their regional projections of future climate change.

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

Цел на проекта

Human-caused emissions of carbon dioxide are disrupting the natural variations of the carbon cycle. Past climatic variations provide essential information on the carbon cycling and its associated climate changes to explore different scenarios from unrestrained to even decreased emissions of CO2. In the CYCLOCARB project, we will develop a semi empirical model of carbon cycling and climates over the last glacial cycle, a unique dampened natural analogue for expected anthropogenic forcing’s. This semi-empirical model will be constrained by an extensive database including indicators for temperature and ice volume (δ18O of foraminifers, sea surface temperature proxies) and proxies for global carbon cycling and partitioning between ocean, atmosphere and solid earth (δ13C of foraminifers, carbonate, organic carbon content in marine sediment). Temperature proxies’ records will help refining climatic sensitivity to greenhouse gases, and the temporal evolution of temperature pattern will shed light on the response of the oceans to climate forcing’s. The δ13C of the climatic system will be reconstructed and the effect of the biological pump quantified for the last 150ka, encompassing both a major emission event at termination II and some decreased CO2 intervals. Altogether, our climatic reconstructions and the semi-empirical model will improve our understanding of the natural response of the carbon cycling to anthropic changes. Moreover, CYCLOCARB will permit the quantification of carbon stocks in Exclusive Economic Zones, which could affect Europe national greenhouse gases inventories and marine carbon stock management.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITE D'AIX MARSEILLE · MarseilleКоординаторФранция