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  • 1
    Keywords: Climatology. ; Bioclimatology. ; Paleoecology. ; Paleontology . ; Climate Sciences. ; Climate Change Ecology. ; Paleoecology. ; Paleontology.
    Description / Table of Contents: Floral Diversity and Climate Change in the Siwalik Succession -- Early Paleogene Megaflora of the Palaeoequatorial Climate: A Case Study from the Gurha Lignite Mine of Rajasthan, Western India -- Development of Cenogram Technique over the Past Six Decades with Some Insights into the Varied Habitats Occupied by Diverse Mammalian Communities Across Spain, China, and India Transiting the Middle Miocene Climatic Optimum -- Palynofloral Diversity During Mid-Miocene Warming in Kerala Basin, South-Western India: Palaeoclimatic Implications -- Non-Pollen Palynomorphs from the Late-Holocene Sediments of Majuli Island, Assam (Indo-Burma Region): Implications to Palaeoenvironmental Studies -- Climate Variability and Its Causal Mechanisms Over the Northeastern Indian Himalaya -- Quaternary Climate of Narmada Valley: A Case Study on Understanding Provenance, Weathering and Depositional Environment Using Alluvium Geochemistry from Tawa River Basin, Hoshangabad District, Madhya Pradesh -- Heterogeneity in Glacier Area Loss in Response to Climate Change in Selected Basins of Western Himalaya -- Proglacial Landscape Transformations in Arctic, Ny-Alesund Area, Svalbard: Paraglacial Processes and Climate Warming During Late Quaternary -- Impact of Changing Climate Over Polar Ice Sheet – A Case Study from Larsemann Hills, East Antarctica -- Prevalent Climate Variables During Ablation Season Around Gangotri Glacier -- Compacted Snow Dune Complexes in Antarctica and their Applicability as New Climate Change and Basement Tectonic Parameters -- Investigating the Effect of Environmental Variables on the Isotopic Composition of Transpiration: Implications to Study the Monsoon Processes -- Investigating the Effect of Air-sea Carbon Dynamics and Water Quality Parameters on the Coral Reef Ecosystem of Lakshadweep Sea -- Trend Analysis and Change Point Detection of Annual and Seasonal Precipitation Timeseries Over Varanasi District, Uttar Pradesh -- Assessment of Snow Cover Changes Over the Tons River Basin During Last Two Decades (2000-2019) -- Extreme Rainfall Trends and their Statistical Significance -- Examination of Historical Trends and Future Projections for Climate and Land-use Variables and its Impacts on Kalna River Flow in Goa, India -- Temporal Trends in Water Discharge Characteristics of the Large Peninsular Rivers: Assessing the Role of Climatic and Anthropogenic Factors -- Groundwater Responses to Climate Variability in Punjab, India -- Reflections on Temporal Trends in Water Quality and Climate Variability at Three Degradation Hotspots of Leading Rivers in India -- Drought Frequency Assessment and Implications of Climate Change for Maharashtra, India -- Multi-temporal Impact Analysis of Covid-19 Lockdown and Unlock Measures on Major Air Pollutants in Guwahati City, India -- Impact of Lockdown on Air Quality in Megacities of India During COVID-19 Pandemic -- Understanding Urban Floods as Extreme Events and Disaster Management: A Case Study of Bengaluru -- Engendered Climate Risk Analysis: A Precursor to Gender Equality and Empowerment -- Covid Lockdown Improves the Health of River Yamuna: A Pilot Study.
    Abstract: Earth’s climate varies even without human influence but the acceleration in the changing pattern with cause and effect by/to the civilisation is a matter of concern to scientists. These patterns are lessons to understand future trends and ways and means for mitigation. The extreme weather events in almost every region of the globe involving excessive loss of human life and property are causing anxiety in society and posing challenges before scientists and planners. Cyclical variations in the Earth’s climate occur at multiple time scales, from years to decades, centuries, and millennia. Cycles at each scale are caused by a variety of physical mechanisms. In the last 65 Ma only, there have been several cycles of glacial advances and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era and human civilization. A multidisciplinary approach in studying the Earth’s changing climate will provide a holistic view and guide us in future planning and programming.
    Type of Medium: Online Resource
    Pages: XIII, 454 p. 1 illus. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783031131196
    Series Statement: Society of Earth Scientists Series,
    DDC: 551.6
    Language: English
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  • 2
    Publication Date: 2023-07-10
    Description: Centennial and millennial scale variability of Southern Ocean temperature is poorly known, due to both short instrumental records and sparsely distributed high-resolution temperature reconstructions, with evidence for past temperature variability instead coming mainly from ice core records. Here we present a high-resolution (~ 60 year) record of diatom abundance from the western Indian sector of the Southern Ocean that spans the interval 14.2 to 1.0 ka BP (calibrated kiloyears before present). The results show the dominant species are Fragilariopsis kerguelensis and Thalassiosira lentiginosa, with accompanying species typical of the Polar Front Zone and Permanent Open Ocean Zone. Species associated with warmer temperatures were most abundant in the period 12-9.5 ka BP, while species associated with lower temperatures were abundant at 14.2-9.5 ka BP.
    Keywords: Actinocyclus actinochilus; AGE; Age, calibrated; Azpeitia tabularis; Chaetoceros sp.; Conrad Rise; Counting, diatoms; Deglaciation; DEPTH, sediment/rock; diatoms; Fragilariopsis curta; Fragilariopsis cylindrus; Fragilariopsis doliolus; Fragilariopsis kerguelensis; Fragilariopsis obliquecostata; Fragilariopsis rhombica; Fragilariopsis ritscheri; Fragilariopsis separanda; Fragilariopsis sublinearis; GC; Gravity corer; Holocene; KH-10-7_COR1GC; Porosira glacialis; Porosira pseudodenticulata; Rhizosolenia antennata forma antennata; Sea surface temperature; Southern Ocean; Thalassionema nitzschioides var. lanceolata; Thalassiosira eccentrica; Thalassiosira gracilis; Thalassiosira lentiginosa; Thalassiosira oestrupii; Thalassiosira oliverana; Thalassiosira tumida; Thalassiothrix antarctica; Trichotoxon reinboldii
    Type: Dataset
    Format: text/tab-separated-values, 5256 data points
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  • 3
    Publication Date: 2023-06-27
    Description: Centennial and millennial scale variability of Southern Ocean temperature is poorly known, due to both short instrumental records and sparsely distributed high-resolution temperature reconstructions, with evidence for past temperature variability instead coming mainly from ice core records. Here we present a high-resolution (~ 60 year), diatom-based sea-surface temperature (SST) reconstruction from the western Indian sector of the Southern Ocean that spans the interval 14.2 to 1.0 ka BP (calibrated kiloyears before present). During the late deglaciation, the new SST record shows cool temperatures at 14.2–12.9 ka BP and gradual warming between 12.9–11.6 ka BP in phase with atmospheric temperature evolution. This supports that the temperature of the Southern Ocean during the deglaciation was linked with a complex combination of processes and drivers associated with reorganisations of atmospheric and oceanic circulation patterns. Specifically, we suggest that Southern Ocean surface warming coincided, within the dating uncertainties, with the reconstructed slowdown of the Atlantic Meridional Overturning Circulation (AMOC), rising atmospheric CO2 levels, changes in the southern westerly winds and enhanced upwelling. During the Holocene the record shows warm and stable temperatures from 11.6–8.7 ka BP followed by a slight cooling and greater variability from 8.7 to 1 ka BP, with a quasi-periodic variability of 200–260 years as identified by spectral analysis. We suggest that the increased variability during the mid to late Holocene may reflect the establishment of centennial variability in SST connected with changes in the high latitude atmospheric circulation and Southern Ocean convection, as identified in models.
    Keywords: AGE; Age, calibrated; Calculated; Conrad Rise; Deglaciation; DEPTH, sediment/rock; diatoms; GC; Gravity corer; Holocene; KH-10-7_COR1GC; Sea ice concentration; Sea surface temperature; Southern Ocean; Temperature, water; Temperature, water, maximum; Temperature, water, minimum
    Type: Dataset
    Format: text/tab-separated-values, 876 data points
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  • 4
    Publication Date: 2023-12-08
    Description: Here, we present datasets of diatom abundance and a diatom-based sea surface temperature reconstruction from the Iceland Basin. The 419.5 cm long marine sediment core DA12-11/2-GC01 was recovered in September 2012 by the Danish R/V Dana using a gravity corer. The core was taken from a location at the northern edge of the Gardar Drift and the eastern edge of the Björn Drift in the Iceland Basin (61.36.536 °N, 20.42.164 °W) at a water depth of 2120 m. Diatoms were analysed at 5 cm intervals over the upper 2 m of core, representing the period 6100-0 cal years BP, with chronological constraints provided by 6 radiocarbon dates. Diatoms were analysed using standard procedures, including the identification and counting of a minimum of 300 diatom per sample, which allowed calculation of the percentage abundances of different species. These abundances were converted into estimates of sea surface temperature using the weight averaging partial least squares transfer function approach.
    Keywords: Actinocyclus curvatulus; Actinocyclus ehrenbergii; AGE; Asteromphalus robustus; Bacteriastrum hyalinum; Bacteriosira fragilis; Coscinodiscus asteromphalus; Coscinodiscus crenulatus; Coscinodiscus marginatus; Coscinodiscus nodulifer; Coscinodiscus oculus-iridis; Coscinodiscus radiatus; Coscinodiscus stellaris; Counting, diatoms; DA12-11/2-GC01; DEPTH, sediment/rock; diatoms; Fragilariopsis cylindrus; Fragilariopsis oceanica; GC; Gravity corer; Hemidiscus cuneiformis; Holocene; Iceland; Iceland Basin; Nitzschia angularis; Nitzschia atlantica; Nitzschia bicapitata; Nitzschia kolaczeckii; Nitzschia marina; Nitzschia uzun; North Atlantic; Porosira glacialis; Pseudoeunotia doliolus; Rhizosolenia alata; Rhizosolenia bergonii; Rhizosolenia borealis; Rhizosolenia hebetata forma hebetata; Rhizosolenia hebetata forma semispina; Roperia tesselata; Sea surface temperature; Sea surface temperature, August; SST reconstruction, transfer function-based approach; Synedra sp.; Thalassionema nitzschioides; Thalassionema nitzschioides var. parva; Thalassiosira angulata; Thalassiosira anguste-lineata; Thalassiosira eccentrica; Thalassiosira ferelineata; Thalassiosira gravida spore; Thalassiosira gravida vegetative; Thalassiosira hyalina; Thalassiosira lineata; Thalassiosira nodulolineata; Thalassiosira nordenskioldii; Thalassiosira oestrupii; Thalassiosira pacifica; Thalassiosira trifulta; Thalassiothrix longissima
    Type: Dataset
    Format: text/tab-separated-values, 2021 data points
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  • 5
    Publication Date: 2023-11-25
    Description: Coccolithophores are globally important marine calcifying phytoplankton. They contribute to the organic carbon pump through the primary production and the ballast of organic matter, and to the carbonate pump through the production of calcium carbonate. Here we compiled all available scanning electron microscopy (SEM) coccolithophore abundance observations. Taxa were standardized following NannoTax3 to a species level where possible. Subspecies (e.a. C. leptoporus subsp. leptoporus and C. leptoporus subsp. quadriperforatus) were grouped as single species. The database contains 2556 abundance observations from 35 different publications. The data span the period of 1993-2017, with observations from all ocean basins and all seasons, and at depths ranging from the surface to 5000 m. We limited our compilation to SEM observations (or observations which further identified samples with SEM) because SEM provides greater detail of coccolithophore diversity than more commonly used polarized light microscopy. Although this limits the number of observations, this allows for a more in-depth analysis of coccolithophore ecology, such as the ecological significance of the coccolithophore life cycle.
    Keywords: Acanthoica acanthifera; Acanthoica acanthos; Acanthoica biscayensis; Acanthoica maxima; Acanthoica quattrospina; Acanthoica spp.; Algirosphaera cucullata; Algirosphaera robusta; Algirosphaera spp.; Alisphaera capulata; Alisphaera extenta; Alisphaera gaudii; Alisphaera ordinata; Alisphaera pinnigera; Alisphaera quadrilatera; Alisphaera spp.; Alisphaera unicornis; Anthosphaera lafourcadii; Anthosphaera periperforata; Anthosphaera spp.; Balaniger virgulosa; Braarudosphaera bigelowii; Calcidiscus leptoporus; Calcidiscus spp.; Calciopappus caudatus; Calciopappus spp.; Calciosolenia brasiliensis; Calciosoleniaceae spp.; Calciosolenia murrayi; Calciosolenia spp.; Calicasphaera blokii; Calicasphaera concava; Calicasphaera diconstricta; Calyptrolithina multipora; Calyptrosphaera cialdii; Calyptrosphaera dentata; Calyptrosphaera heimdalae; Calyptrosphaera sphaeroidea; Canistrolithus spp.; Canistrolithus valliformis; Ceratolithus cristatus; Ceratolithus spp.; Chrysotila carterae; Chrysotila roscoffensis; Coccoliths, other; Coccolithus pelagicus; Corisphaera gracilis; Corisphaera spp.; Corisphaera tyrrheniensis; Coronosphaera maxima; Coronosphaera mediterranea; Coronosphaera spp.; Cyrtosphaera aculeata; Cyrtosphaera cidaris; Cyrtosphaera spp.; DATE/TIME; DEPTH, water; Discosphaera tubifera; Emiliania huxleyi; Ericiolus sp.; Florisphaera profunda; Flosculosphaera calceolariopsis; Formonsella pyramidosa; Gephyrocapsa ericsonii; Gephyrocapsa muellerae; Gephyrocapsa oceanica; Gephyrocapsa ornata; Gephyrocapsa spp.; Gladiolithus flabellatus; Gliscolithus amitakareniae; Hayaster perplexus; Helicosphaera carteri; Helicosphaera cornifera; Helicosphaera hyalina; Helicosphaera pavimentum; Helicosphaera spp.; Helicosphaera wallichii; Helladosphaera cornifera; Helladosphaera pienaarii; Helladosphaera vavilovii; Heterococcolithophores; Holococcolithophora kastriensis; Holococcolithophore spp.; Homozygosphaera spinosa; Homozygosphaera spp.; Homozygosphaera triarcha; Homozygosphaera vercelli; Hughesius youngii; Hymenomonas lacuna; Hymenomonas roseola; Hymenomonas spp.; Jomonlithus spp.; LATITUDE; LONGITUDE; Michaelsarsia adriaticus; Michaelsarsia elegans; Michaelsarsia spp.; Ochrosphaera neapolitana; Oolithotus antillarum; Oolithotus fragilis; Oolithotus spp.; Ophiaster formosus; Ophiaster hydroideus; Ophiaster minimus; Ophiaster reductus; Ophiaster spp.; Palusphaera sp.; Palusphaera spp.; Palusphaera vandelii; Pappomonas borealis; Pappomonas flabellifera; Pappomonas sp.; Pappomonas spp.; Papposphaera arctica; Papposphaera lepida; Papposphaera sagittifera; Papposphaera sp.; Papposphaera spp.; Papposphaera thomsenii; Picarola margalefii; Placorhombus ziveriae; Polycrater sp.; Polycrater spp.; Pontosphaera discopora; Pontosphaera japonica; Pontosphaera multipora; Pontosphaera spp.; Pontosphaera syracusana; Poricalyptra aurisinae; Poricalyptra isselii; Poricalyptra magnaghii; Poritectolithus maximus; Poritectolithus poritectum; Pseudowigwamma scenozonion; Reference/source; Reticulofenestra parvula; Reticulofenestra sessilis; Reticulofenestra spp.; Rhabdosphaera clavigera; Rhabdosphaera spp.; Rhabdosphaera xiphos; Sample method; Scyphosphaera apsteinii; Scyphosphaera spp.; see sample method; Solisphaera helianthiformis; Solisphaera spp.; Sphaerocalyptra adenensis; Sphaerocalyptra dermitzakii; Sphaerocalyptra quadridentata; Sphaerocalyptra sp.; Sphaerocalyptra spp.; Syracolithus bicorium; Syracolithus quadriperforatus; Syracolithus schilleri; Syracolithus sp.; Syracolithus spp.; Syracosphaera amoena; Syracosphaera ampliora; Syracosphaera anthos; Syracosphaera arethusae; Syracosphaera bannockii; Syracosphaera borealis; Syracosphaera castellata; Syracosphaera corolla; Syracosphaera delicata; Syracosphaera dilatata; Syracosphaera epigrosa; Syracosphaera exigua; Syracosphaera florida; Syracosphaera gaarderae; Syracosphaera halldalii; Syracosphaera hastata; Syracosphaera histrica; Syracosphaera lamina; Syracosphaera leptolepis; Syracosphaera marginiporata; Syracosphaera molischii; Syracosphaera nana; Syracosphaera nodosa; Syracosphaera noroitica; Syracosphaera orbiculus; Syracosphaera ossa; Syracosphaera prolongata; Syracosphaera protrudens; Syracosphaera pulchra; Syracosphaera reniformis; Syracosphaera rotula; Syracosphaera sp.; Syracosphaera spp.; Syracosphaera squamosa; Syracosphaera strigilis; Syracosphaera tumularis; Tergestiella adriatica; Tetralithoides quadrilaminata; Turrilithus latericioides; Turrisphaera spp.; Umbellosphaera irregularis; Umbellosphaera spp.; Umbellosphaera tenuis; Umbilicosphaera anulus; Umbilicosphaera foliosa; Umbilicosphaera hulburtiana; Umbilicosphaera sibogae; Umbilicosphaera spp.; Wigwamma antarctica; Wigwamma spp.; Wigwamma triradiata; Zygosphaera amoena; Zygosphaera marsilii
    Type: Dataset
    Format: text/tab-separated-values, 685008 data points
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  • 6
  • 7
    Publication Date: 2020-05-21
    Print ISSN: 0921-030X
    Electronic ISSN: 1573-0840
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Published by Springer
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  • 8
    Publication Date: 2019-12-23
    Print ISSN: 2364-9453
    Electronic ISSN: 2364-9461
    Topics: Geosciences
    Published by Springer
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  • 9
    Publication Date: 2019-12-04
    Print ISSN: 2364-9453
    Electronic ISSN: 2364-9461
    Topics: Geosciences
    Published by Springer
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  • 10
    Publication Date: 2011-07-01
    Print ISSN: 0016-7622
    Electronic ISSN: 0974-6889
    Topics: Geosciences
    Published by Springer
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