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Impact of a Narrow Coastal Bay of Bengal Sea Surface Temperature Front on an Indian Summer Monsoon Simulation
A dry bias in climatological Central Indian rainfall plagues Indian summer monsoon (ISM) simulations in multiple generations of climate models. Here, using observations and regional climate modeling, we focus on a warm coastal Bay of Bengal sea surface temperature (SST) front and its impact on Central Indian rainfall. The SST front, featuring sharp gradients as large as 0.5 °C/100 km, is colocated with a mixed layer depth (MLD) front, in a region where salinity variations are known to control MLD. Regional climate simulations coupling a regional atmospheric model with an ocean mixed layer model are performed. A simulation with observed MLD climatology reproduces SST, rainfall, and atmospheric circulation associated with ISM reasonably well; it also eliminates the dry bias over Central India significantly. Perturbing MLD structure in the simulations, we isolate the SST front’s impact on the simulated ISM climate state. This experiment offers insights into ISM climatological biases in the coupled NCEP Climate Forecast System version-2. We suggest that the warm SST front is essential to Central Indian rainfall as it helps to sustain deep and intense convection in its vicinity, which may be a source for the vortex cores seeding the monsoon low-pressure systems.
Journal Article
Thinking Like a River
The Kemi River is the major watercourse in the Finnish province of Lapland and the »stream of life« for the inhabitants of its banks. Franz Krause examines fishing, transport and hydropower on the Kemi River and analyses the profoundly rhythmic patterns in the river dwellers' activities and the river's dynamics. The course of the seasons and weekly and daily rhythms of discharge, temperature, work and other patterns make the river dwellers' world an ever-transforming phenomenon. The flows of life and the frictions of everyday encounters continually remake the river and its inhabitants, negotiating national strategies, economic power, people's ingenuity, and the currents of the Kemi River.
eBook
Climate change and human mobility : global challenges to the social sciences
\"'The greatest single impact of climate change could be on human migration', stated the Intergovernmental Panel on Climate Change (IPCC) in 1990. Since then there has been considerable concern about the large-scale population movements that might take place because of climate change. This book examines emerging patterns of human mobility in relation to climate change, drawing on a multidisciplinary approach, including anthropology and geography. It addresses both larger, general questions and concrete local cases, where the link between climate change and human mobility is manifest and demands attention - empirically, analytically and conceptually. Among the cases explored are both historical and contemporary instances of migration in response to climate change, and together they illustrate the necessity of analyzing new patterns of movement, historic cultural images and regulation practices in the wake of new global processes\"-- Provided by publisher.
Book
Nitrogen and phosphorus constrain the CO2 fertilization of global plant biomass
Elevated CO2 (eCO2) experiments provide critical information to quantify the effects of rising CO2 on vegetation1–6. Many eCO2 experiments suggest that nutrient limitations modulate the local magnitude of the eCO2 effect on plant biomass1,3,5, but the global extent of these limitations has not been empirically quantified, complicating projections of the capacity of plants to take up CO27,8. Here, we present a data-driven global quantification of the eCO2 effect on biomass based on 138 eCO2 experiments. The strength of CO2 fertilization is primarily driven by nitrogen (N) in ~65% of global vegetation and by phosphorus (P) in ~25% of global vegetation, with N- or P-limitation modulated by mycorrhizal association. Our approach suggests that CO2 levels expected by 2100 can potentially enhance plant biomass by 12 ± 3% above current values, equivalent to 59 ± 13 PgC. The future effect of eCO2 we derive from experiments is geographically consistent with past changes in greenness9, but is considerably lower than the past effect derived from models10. If borne out, our results suggest that the stimulatory effect of CO2 on carbon storage could slow considerably this century. Our research provides an empirical estimate of the biomass sensitivity to eCO2 that may help to constrain climate projections.Elevated CO2 increases plant biomass, providing a negative feedback on global warming. Nutrient availability was found to drive the magnitude of this effect for the majority of vegetation globally, and analyses indicated that CO2 will continue to fertilize plant growth in the next century.
Journal Article
Caring for our Earth
\"Describes many aspects of Earth's geography, from wildlife to water supplies, that are under threat from climate change and human actions. Offers many hands-on activities for conservation and recycling\"--Provided by publisher.
Book
Food Insecurity
This book explores the experiences, causes, and consequences of food insecurity in different geographical regions and historical eras. It highlights collective action and political action aimed at food sovereignty as solutions to mitigate suffering.
eBook
Political geology : active stratigraphies and the making of life
This title explores the emerging field of political geology, an area of study dedicated to understanding the cross-sections between geology and politics. It considers how geological forces such as earthquakes, volcanoes, and unstable ground are political forces and how political forces have an impact on the earth. Together the authors seek to understand how the geos has been known, spoken for, captured, controlled and represented while creating the active underlying strata for producing worlds. This comprehensive collection covers a variety of interdisciplinary topics including the history of the geological sciences, non-Western theories of geology, the origin of the earth, and the relationship between humans and nature.
Book
Zmiany klimatu Krakowa i adaptacja do nich w kontekście uwarunkowań planistycznych
Based on climatological data from 1901–2020 from the Research Station of the Department of Climatology of the Institute of Geography and Spatial Management of the Jagiellonian University in Krakow, the multi-year course of selected elements of Krakow climate was characterised and the role of local spatial development plans was indicated in terms of minimising the effects of the urban heat island and global warming.
Journal Article