H2020Индивидуална стипендия2018–2019

COSIF · Carbonyl sulfide and sun-induced fluorescence as joint constraints on terrestrial carbon cycling

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

Период: 2018-01-01 → 2019-12-31
Финансиране от ЕС: 166 157 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Поглъщането на въглероден диоксид от растенията се анализира чрез измерване на карбонил сулфид и слънчева флуоресценция. По-точните данни ще помогнат за планирането на мерки за ограничаване на глобалното затопляне.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Carbonyl sulfide and sun-induced fluorescence as joint constraints on terrestrial carbon cycling

Globally, terrestrial ecosystems are presently absorbing around 30 % of the carbon dioxide (CO2) that humans are releasing into the atmosphere every year, thus slowing down global warming. The main driver of the terrestrial carbon sink is gross primary productivity (GPP), the photosynthetic uptake by plants, which is partially counteracted by ecosystem respiration, which returns some of the GPP back to the atmosphere as CO2. GPP, unfortunately, cannot be measured directly and thus needs to be inferred from models, which are constrained by empirical data. The resulting uncertainty impedes our ability to project whether terrestrial ecosystems will be sequestering CO2 at similar rates in the future or whether their sink capacity might saturate or even decline. The MSCA project COSIF aims at reducing the uncertainty of GPP estimates by using two novel constraints of GPP, the ecosystem uptake of the trace gas carbonyl sulfide (COS) and the solar-induced chlorophyll fluorescence (SIF) in a model-data integration approach. These two proxies of GPP target different components of the photosynthesis process and thus allow constraining GPP from different perspectives. The reduced uncertainty of future GPP estimates will have far reaching consequences for the design of decarbonization pathways required for reaching defined climate goals and thus affect the global society.

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

Цел на проекта

The terrestrial biosphere annually absorbs around one quarter of the carbon dioxide emitted by human activities each year and thus beneficially decreases the rate of global warming. The sign and magnitude of the net land carbon dioxide flux is determined by the delicate balance between two key carbon cycle processes: gross primary productivity (photosynthetic carbon uptake by land plants) and ecosystem respiration (carbon dioxide production by all living things). The magnitude of both processes is however highly uncertain due to conceptual and methodological difficulties in disentangling the two from the (measurable) net carbon dioxide flux. This uncertainty undermines our ability to project the future of the terrestrial global carbon cycle, which in turn severely impedes the conception of realistic carbon emission reduction measures allowing constraining global warming below agreed targets. The overarching objective of the proposed project is to provide new constraints on gross primary productivity and ecosystem respiration using a dual-constraints approach. Gross primary productivity and ecosystem respiration will be estimated jointly by ecosystem-scale carbonyl sulfide eddy covariance and sun-induced fluorescence measurements at three contrasting European ecosystems. The resulting data will then be used in a unifying modelling framework allowing gross primary productivity and ecosystem respiration to be determined with much greater confidence based on the dual constraints by the experimental measurements.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITAET INNSBRUCK · InnsbruckКоординаторАвстрия