AQUATIC · Assessing and QUantifying the ATlantic Instrumental hydroClimate
„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“
- Период
- 2021-01-01 → 2023-07-02
- Финансиране от ЕС
- 203 149 €
- Участници
- 1
- Схема
- MSCA-IF
Линиите свързват координатора с партньорите.
Накратко на български
Вариациите в валежите и речните потоци в тропическия Атлантик от края на XIX век се анализират чрез стари данни. Това помага за разбирането на природни бедствия като сушата в Сахел и наводненията в Амазония, за да се уточнят бъдещите климатични прогнози.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Assessing and QUantifying the ATlantic Instrumental hydroClimate
The hydrological cycle in and around the tropical and subtropical Atlantic is fundamental for the global biosphere, climate system, and human livelihood. The tropical Atlantic basin receives the greatest planetary river systems by discharge and holds the largest planetary rainforests, which contain a wealth of biodiversity and are important in the global carbon cycle. From sustained droughts in the Sahel to recent flooding events in the Amazon, interannual-to-multidecadal variations in precipitation and runoff around the tropical and subtropical Atlantic have had major impacts on ecosystems and human societies. Long instrumental hydroclimate records are critically important for understanding these variations, and for contextualizing paleoclimate, present-day, and projected future hydroclimate changes. However, global satellite precipitation coverage only extends from the late 1970s, not long enough to resolve decadal and multidecadal modes of hydrological cycle variability; and gridded land surface coverage is highly infilled before the 1930s in many regions. Hydrologic paleo-proxy records extend over the last millennium in some areas, but are not always straightforward to interpret or compare directly with instrumental measurements. AQUATIC addresses these gaps in our understanding of Atlantic sector hydrological cycle variability back to the late 19th century. We aim to characterize late-19th-to-mid-20th tropical and subtropical Atlantic sector hydrological cycle variability, to evaluate the mechanisms responsible for this variability, and to understand long-term hydrological change and constrain future climate projections. Specific objectives are to: (1) Compile late-19th-to-mid-20th century (1880–1950) low-latitude Atlantic sector hydroclimate data, (2) Characterize their leading interannual-to-multidecadal variability, and examine the driving processes, and (3) Evaluate the Atlantic-sector hydroclimate responses to external climate forcings.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Precipitation (P) and runoff (R) variability around the tropical and subtropical Atlantic is of fundamental importance to the biosphere and carbon system, and to human livelihood. Over recent decades, decadal variations in P and R — including droughts in the Sahel region of West Africa, northeast Brazil, the Caribbean, and the Amazon basin — have caused large social and economic disruptions. However, understanding the causes of these events, as well as projecting regional 21st century climate change hydroclimate impacts, are complicated by the relative shortness in the instrumental record, which reduces confidence in the attribution of external forcings.AQUATIC will extend the record of Atlantic-sector hydroclimate variability during the 1880–1950 period. We will: (1) compile an integrated hydroclimate dataset including newly-recovered P station gauge data, long-term river R measurements, and a unique long-term record of Atlantic sea surface salinity which we will use as an “ocean rain gauge” to infer the surface evaporation (E)–P–R balance. We will then (2) examine these integrated hydroclimate data along with atmospheric and ocean reanalysis output to characterize mechanisms of decadal-to-multidecadal hydroclimate variability, including shifts of the intertropical convergence zone (ITCZ) and expansion and contraction of the Hadley circulation. This will allow us to (3) evaluate the Coupled Model Intercomparison Project Phase 6 (CMIP6) simulations to attribute long-term hydrological change to different external forcings, and constrain future climate projections.AQUATIC will combine analysis of early instrumental historical climate data with state-of-the-art reanalysis and model output to understand mechanisms of hydroclimate variability in and around the Atlantic and to narrow uncertainties for the future in this climatologically important region.
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITAET BERN · BernКоординаторШвейцария
Връзки
Данни: CORDIS, © Европейски съюз