Nigeria annual flood outlook 2024
The 2024 Flood Outlook report offers a comprehensive assessment of flood risk across the country, highlighting critical areas of concern and strategic recommendations for mitigation and preparedness. Through
Rainfall Pattern
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Chief feature of physiographic rainfall variations across India (1813-2006)
While occurrences of water bodies (rivers and canals;reservoirs, tanks and ponds; beels, oxbow lakes and derelict water; and brackish water) across the country depend upon physiographic settings and rainfall conditions, the recharging of the water
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Pre-monsoon showers active in NE
Though officially the onset of monsoon in the country is yet to be declared, the northern limit of monsoon has touched the extreme south/ southeast part of Bangladesh close to Mizoram. The normal date of onset of monsoon over Kerala Coast is June 1, while over the city of Guwahati, the onset normally takes place on June 5. By June 6, NE region is generally covered by monsoon. However, variation of seven days in this respect is quite possible, said H Pathak, Director of the Regional Meteorology Centre (RMC) here.
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Conservation strategies to mitigate impacts from climate change in Amazonia
Protected area systems and conservation corridors can help mitigate the impacts of climate change on Amazonian biodiversity. We propose conservation design criteria that will help species survive in situ or adjust range distributions in response to increased drought. The first priority is to protect the western Amazon, identified as the
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Observed change of the standardized precipitation index, its potential cause and implications to future climate change in Amazon
Observations show that the standard precipitation index (SPI ) over the southern Amazon region decreased in the period of 1970
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Water recycling by Amazonian vegetation: coupled versus uncoupled vegetationclimate interactions
To demonstrate the relationship between Amazonian vegetation and surface water dynamics, specifically, the recycling of water via evapotranspiration (ET), we compare two general circulation model experiments; one that couples the IS92a scenario of future CO2 emissions to a land-surface scheme with dynamic vegetation (coupled) and the other to fixed vegetation (uncoupled).
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The fate of assimilated carbon during drought: impacts on respiration in Amazon rainforests
Interannual variations in CO2 exchange across Amazonia, as deduced from atmospheric inversions, correlate with El Nino occurrence. They are thought to result from changes in net ecosystemexchange and fire incidence that are both related to drought intensity. Alterations to net ecosystemproduction (NEP) are caused by changes in gross primary production (GPP) and ecosystemrespiration (Reco ).
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Drought effects on litterfall, wood production and belowground carbon cycling in an Amazon forest
The Amazon Basin experiences severe droughts that may become more common in the future. Little is known of the effects of such droughts on Amazon forest productivity and carbon allocation. We tested the prediction that severe drought decreases litterfall and wood production but potentially has multiple cancelling effects on belowground production within a 7-year partial throughfall exclusion experiment. We simulated an approximately 35
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Impact of a drier EarlyMid-Holocene climate upon Amazonian forests
This paper uses a palaeoecological approach to examine the impact of drier climatic conditions of the Early
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Fire-mediated dieback and compositional cascade in an Amazonian forest
The only fully coupled land
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Hydro-climatic and ecological behaviour of the drought of Amazonia in 2005
In 2005, southwestern Amazonia experienced the effects of an intense drought that affected life and biodiversity. Several major tributaries as well as parts of the main river itself contained only a fraction of their normal volumes of water, and lakes were drying up. Analyses of climatic and hydrological records in Amazonia suggest a broad consensus that the 2005 drought was linked not to El Nin