HEИндивидуална стипендия2023–2024

ELATE · Exchange of Light alkenes and Alkyl halides from Arctic Tundra Ecosystem

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

Период: 2023-01-01 → 2024-12-31
Финансиране от ЕС: 230 774 €
Участници: 2
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Арктическите почви и техният обмен на летливи органични съединения, като леки алкени и алкилхалиди, се анализират при различни температури и нива на CO2. Това помага за по-точни климатични прогнози и разбиране на процесите, които влияят върху озона и атмосферата.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Exchange of Light alkenes and Alkyl halides from Arctic Tundra Ecosystem

Anthropogenic climate change is driving unprecedented warming across Arctic and permafrost-affected regions, leading to thawing soils, shifts in vegetation, and altered soil biogeochemistry. These changes can profoundly affect the exchange of volatile organic compounds (VOCs) between soils and the atmosphere. While VOCs make up a relatively small portion of total carbon flux compared with carbon dioxide or methane, they play a significant role in atmospheric chemistry, contributing to ozone formation and secondary aerosol production. This project aims to clarify how Arctic and permafrost-affected soils can simultaneously act as sources and sinks of VOCs—particularly light alkenes and alkyl halides, as well as other key compounds—under both current conditions and plausible future climate scenarios. It pursued four overarching objectives: (1) characterize the capacity of these soils to emit or absorb relevant VOCs, (2) determine how environmental drivers such as temperature, moisture, and vegetation status influence fluxes, (3) assess the sensitivity of VOC exchanges to simulated warming and elevated CO2, and (4) provide refined parameterizations to inform regional- and global-scale models, thus supporting more accurate projections of climate feedbacks. By advancing our knowledge of VOC dynamics in these sensitive environments, the project delivers insights that can help shape climate response strategies and refine policy measures aimed at combating global climate change.

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

Цел на проекта

Volatile Organic Compounds (VOCs) play a critical role in the physical and chemical properties of the atmosphere and regulating Earths climate. Among them, light alkenes and alkyl halides (e.g., CH3X) are also critically important for tropospheric ozone formation and stratospheric ozone depletion, respectively. However, global budgets of light alkenes and CH3X are not in balance because many sources/sinks have not been quantified realistically due to paucity of measurements; especially, fluxes in Arctic ecosystems have not yet been well established. Furthermore, drivers of the fluxes and their response to the fast climate change are yet to be unraveled. This proposed project aims to fill in the gaps of the state-of-the-art by (1) determining the sources/sinks of these VOCs in an Arctic tundra ecosystem; (2) quantifying how Arctic warming and increased atmospheric CO2 may impact the VOCs fluxes in the Arctic tundra ecosystems; (3) constructing the relationships between the VOC fluxes and environmental and biological factors to determine the drivers of variability and synchronicity of fluxes; and (4) constructing flux algorithms to be incorporated into the MEGAN model to enhance scientific understanding of VOC biogeochemistry and related environmental implications. The project takes an interdisciplinary approach involving atmospheric biogeochemistry, environmental chemistry, Arctic ecology and ecosystem modeling, which combines my research skills and expertise of the host. The expected high-quality publications, training and interdisciplinary collaborations will be valuable assets to support my career development. The effective dissemination of the research outputs will increase the publics consciousness on earth system as a whole and the action of climate change mitigation, and will bring important social benefits by promoting the publics agreements on EUs goal of climate-neutral by 2050 and the implementation of European Green Deal.

Оригинален текст от CORDIS (на английски).

Участници

KOBENHAVNS UNIVERSITET · KOBENHAVNКоординаторДания
LEIBNIZ-ZENTRUM FUER AGRARLANDSCHAFTSFORSCHUNG (ZALF) e.V. · MuenchebergГермания