A healthy planet has sustained human populations for a long time. However, the increasing damage to the planet's health, including but not limited to climate change, is increasing the risks to human health. The Global Environment Outlook-6 (2019) presents the state of the art of current environmental risks faced world-wide; its underlying causes (drivers and pressures) and its impacts. It discusses the policy options and outlooks for the future. This presentation briefly covers the key challenges faced by the global community in integrating the environmental and climate change dimensions into development strategies and what this implies for global environmental justice.
Senior scientist, NILU
Atmospheric measurements of GHGs track how well we are doing in terms of meeting the target of limiting global warming to below 2 degrees. Ultimately, emission mitigation strategies are only effective if they slow and eventually stop the increase of GHGs in the atmosphere. Top-down approaches reconcile the emissions with the observed atmospheric growth rate, that is, they provide a mass balance constraint on what the total emissions are. While top-down approaches cannot replace inventory methods, they should be part of the emissions stocktake process.
Head of Division 'Bio-Geo-Chemical Processes', Institute of Meteorology and Climate Research, Atmospheric Envurinmental Research (IMK-IFU), Karlsruhe Institute of Technology (KIT);
Principle Scientist, International Livestock Research Institute (ILRI), Nairobi, Kenya
So far relatively little is known about the source strength of African terrestrial ecosystems for N2O and CH4, mainly due to a lack of respective measurements. However, the African continent is home to approx. ¼ of global cattle population, and emissions from the livestock sector are a dominating source within many national GHG inventories of African countries. Moreover, N2O emissions from crop production, which seem currently to be negligible, might increase exponentially with increased use of fertilizer.
Establishing baselines of current emissions and developing strategies for increasing agricultural production under the auspices of climate change, while reducing its environmental costs, incl. GHG footprints, is a key challenge, which requires the establishment of knowledge hubs and research capacities.
This presentation summarizes some current findings about GHG emissions from natural and managed systems, including the livestock sector, and reports about progress in establishing relevant infrastructure in East Africa.
Lutz Merbold, ILRI, is a co-author on this key note.
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