• Because fluctuations in Holocene atmospheric radiocarbon concentrations have been shown to be due to variations in solar activity, the Little Ice Age (LIA) climatic deteriorations registered in both peat bogs were probably driven by changes in solar activity. (elsevierpure.com)
  • 1982. The determination of atmospheric concentrations of the active ingredient of pesticide formulations by high-performance liquid chromatography. (cdc.gov)
  • Research strategies include minimizing methane concentrations and coal dust accumulations and applying proper dispersible rock dust in sufficient quality at all locations. (cdc.gov)
  • ICOS Pallas Sammaltunturi station is part of the ICOS Atmosphere Network measuring the atmospheric greenhouse gas concentrations in Europe. (lu.se)
  • The input data to the model consist of climate parameters, atmospheric CO2 concentrations and a soil code. (lu.se)
  • YOSE has been monitoring atmospheric N and S deposition since 1981, see the conditions and trends website for park-specific information. (nps.gov)
  • SEQU and KICA have been monitoring atmospheric N and S deposition since 1980, see the conditions and trends website for park-specific information. (nps.gov)
  • [ 10 ] This deficiency results in accumulation and deposition of HGA in cartilage, causing the characteristic diffuse bluish-black pigmentation. (medscape.com)
  • Although OPDTTper mass (toxicity) was highest for ultrafine particles, estimated lung deposition was mainly from accumulation and coarse particles. (cdc.gov)
  • While the EC method has also been used to measure other atmospheric constituents including methane, nitrous oxide, and ozone, the often relatively small fluxes of these constituents over ecosystems are much more challenging to measure using eddy covariance than CO 2 and water vapor fluxes. (copernicus.org)
  • This can be accomplished by reducing the O2 component of the atmosphere to a level that will not sustain combustion of a gas or of a solid, such as coal, or by increasing the amount of an existing flammable gas, such as methane (CH4), to an atmospheric concentration above which it becomes nonflammable relative to the O2 concentration of the atmosphere. (cdc.gov)
  • A key metric of global warming is the Earth's 'equilibrium climate sensitivity' (ECS), which represents the global surface warming that will accompany a doubling of atmospheric carbon dioxide. (cbd.int)
  • A consistent region-wide decrease (∼20%) of sediment-Hg flux suggests that controls on local and regional atmospheric Hg emissions have been effective in decreasing the supply of Hg to Lake Superior and inland lakes. (syr.edu)
  • Data from the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition allowed us to investigate the temporal dynamics of snowfall, snow accumulation and erosion in great detail for almost the whole accumulation season (November 2019 to May 2020). (bas.ac.uk)
  • 2020. Available online: https://www.un.org/development/desa/en/news/population/2018-revision-of-world-urbanization-prospects.html (accessed on 11 March 2021). (reading.ac.uk)
  • Hazelton, P. Evaluation of accumulation and concentration of heavy metals in different urban roadside soil types in Miranda Park, Sydney. (reading.ac.uk)
  • Piltz and his team of meteorologists developed Sperry's "ice accumulation algorithm" that incorporates various radial ice accumulation measurements, wind speed and direction data and temperature forecasts for a storm event period, and assimilated that data into a "Potential Utility Damage Scale," much like the enhanced Fujita scale or the Saffir-Simpson hurricane wind scale. (wikipedia.org)
  • Therefore, alternative flux measurement methods are required for the observation of atmospheric constituent fluxes for which no fast-response gas analyzers exist or which require more accurate measurements. (copernicus.org)
  • Despite the recognized value of the method, true eddy accumulation flux measurements remain very challenging to perform as they require fast and dynamic modulation of the air sampling mass flow rate proportional to the magnitude of the instantaneous vertical wind velocity. (copernicus.org)
  • This study presents the proof of concept that practical true eddy accumulation trace gas flux measurements are possible today using dynamic mass flow control, advanced real-time processing of wind measurements, and fully automatic gas handling. (copernicus.org)
  • Finally, based on the current successful proof of concept, we suggest specific improvements towards long-term and reliable true eddy accumulation flux measurements. (copernicus.org)
  • Siebicke, L. and Emad, A.: True eddy accumulation trace gas flux measurements: proof of concept, Atmos. (copernicus.org)
  • We present 5 years (2009-2013) of automatic weather station measurements from the lower accumulation area (1840 m a.s.l.-above sea level) of the Greenland ice sheet in the Kangerlussuaq region. (aber.ac.uk)
  • In this article, a dataset of age-depth modelling data, sedimentation rates and dust mass accumulation rates (MAR) from four loess-palaeosol sequences from the Carpathian Basin is presented. (lu.se)
  • The dataset is related to the article "Detailed luminescence dating of dust mass accumulation rates over the last two glacial-interglacial cycles from the Irig loess-palaeosol sequence, Carpathian Basin", published in the journal Global and Planetary Change by Perić et al. (lu.se)
  • 1]. In the dataset, luminescence ages from the loess sites Irig, Nosak, Stari Slankamen and Crvenka were modeled using the r.bacon software after which the dust mass accumulation rates were calculated. (lu.se)
  • Many atmospheric constituents therefore critically affect the health of ecosystems and humans, as well as climate. (copernicus.org)
  • in A History of Atmospheric CO2 and its Effects on Animals, Plants, and Ecosystems (eds Ehleringer, J. R., Cerling, T. E. & Dearing, M. D.) Ch. 5 (Scripps Institution of Oceanography, 2001). (nature.com)
  • However, evapotranspiration (ET) and LE showed a relatively strong coupling to atmospheric vapor pressure deficit (VPD), with more pronounced such control at the dry tundra sites compared to the wet-growing ecosystems. (lu.se)
  • 2007. Soil carbon and nitrogen accumulation with long-term no-till versus mildboard plowing overestimated with tilled-zone sampling depth. (kjssf.org)
  • Forage legumes are known for some particular characteristics like large capacity for capturing atmospheric nitrogen and high nutritive value of the produced herbage, and for that reason is being considered as a viable alternative in this new production model. (usp.br)
  • Therefore, it is important to understand what controls this accumulation of carbon and exchange of greenhouse gases in the boreal forest, and what is the forest's potential response to climate change. (lu.se)
  • Micrometeorological methods to quantify fluxes of atmospheric constituents are key to understanding and managing the impact of land surface sources and sinks on air quality and atmospheric composition. (copernicus.org)
  • Atmospheric rivers (ARs) generate most of the economic losses associated with flooding in the western United States and are projected to increase in intensity with climate change. (nature.com)
  • In this paper we go beyond existing reference biosphere models and investigate the potential for specific accumulation mechanisms. (tib.eu)
  • 1984. Kinetics and mechanisms of the gas-phase reactions of ozone with organic compounds under atmospheric conditions. (cdc.gov)
  • To overcome this burden, plants are potential candidates to remove pollutants through diverse biological mechanisms involving accumulation, immobilization, volatilization, and degradation. (mdpi.com)
  • Alkaptonuria is a rare genetic disorder in which there is a deficiency of the enzyme homogentisic acid oxidase, resulting in the accumulation of homogentisic acid and a characteristic blue-black discoloration of the skin and cartilage, called ochronosis. (medscape.com)
  • Homogentisic acid oxidase requires atmospheric oxygen, ferrous ion, and sulfhydryl groups for normal function, and the enzyme is inhibited by quinones. (medscape.com)
  • He advocated three key parameters for the development of the algorithm: Storm total rainfall and subsequent total ice accumulation if temperatures for the duration of the event remain below freezing. (wikipedia.org)
  • Extracting grain sizes and densities of the main material deposited in the area of investigation from the previous sedimentological studies, we were able to conduct the first sensitivity studies altering tectonic and atmospheric parameters. (awi.de)
  • Using fractionation profile of potentially toxic elements in soils to investigate their accumulation in Tilia sp. (reading.ac.uk)
  • Manipulated increase in snow accumulation at a subarctic tundra peatland complex in northern Sweden resulted in permafrost thaw, soil wetting and increased carbon sequestration. (lu.se)
  • Net snow accumulation derived from the LT model precipitation agrees well with point observations across the icefield. (frontiersin.org)
  • British Columbia typically sees atmospheric river events in the month of November, just as the Pacific Northwest does. (cnn.com)
  • and precipitation (and associated snow accumulation) typically varies greatly at small spatial scales in such environments. (frontiersin.org)
  • Effects of tillage and cultivation methods on carbon accumulation and soil properties were investigated in the treatments of tillage-transplanting (T-T), tillage-wet hill seeding (T-WS), minimum tillage-dry seeding (MT-S) and no-tillage dry seeding (NT-S) of rice. (kjssf.org)
  • 2010 15:37 May 08, 2012 Jkt 226001 DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration 50 CFR Part 648 [Docket No. 120412409-2409-01] RIN 0648-BB95 Control Date To Limit Excessive Accumulation of Control, Qualifying Landings History, and Referendum Eligibility in the Monkfish Fishery National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce. (justia.com)
  • We used an average based on six years of meteorological data from the National Oceanic and Atmospheric Administration (NOAA) and Environment Canada to estimate the snow thickness on the roof. (concordia.ca)
  • We characterize the fjord seafloor and potential benthic habitats using the Coastal and Marine Ecological Classification Standard (CMECS) recently developed by the National Oceanic and Atmospheric Administration (NOAA) and NatureServe. (usgs.gov)
  • In contrast, Lake Superior and inland lakes exhibited a pattern of Hg loading consistent with an atmospheric source - gradual increases followed by recent (post-1980) decreases. (syr.edu)
  • Rate of tree carbon accumulation increases continuously with tree size, Stephenson et al. (bio4climate.org)
  • The growth rate of trees - and thus their accumulation of carbon - increases continuously with tree size. (bio4climate.org)
  • One of our atmospheric river events rained much higher than 2500 meters, so that rain melted the snow and helped create the flooding. (cnn.com)
  • A glacier's mass budget is determined by the balance of snow accumulation and ablation. (frontiersin.org)
  • It is concluded that minimum or no disturbance of soil in rice cultivation can increase carbon accumulation in the soil, especially in the top layer, and subsequently contribute to the formation of the water-stable soil aggregates. (kjssf.org)
  • Nine wet-shifts identified in the monoliths from Walton Moss and Lille Vildmose mainly occurred during periods of increasing atmospheric C-14 content. (elsevierpure.com)
  • The lowest carbon accumulation values for the Walton Moss monoliths between ca. cal AD 1300 and 1800 and between ca. cal AD 1490 and 1580 for Lille Vildmose occurred during the course of LIA climatic deteriorations. (elsevierpure.com)
  • In alkaptonuria, the accumulation of HGA inhibits collagen cross-linking by affecting a crucial enzyme in collagen synthesis, leading to a diminution of structural collagen integrity. (medscape.com)
  • The remaining 64 % (1.14 m) of surface lowering resulted from high atmospheric temperatures, up to a +2.6 °C daily average, indicating that 2012 would have been a negative SMB year at this site even without the melt-albedo feedback. (aber.ac.uk)
  • If high temperatures continue, the current lower accumulation area will turn into a region with superimposed ice in coming years. (aber.ac.uk)
  • True eddy accumulation (TEA) is a direct flux measurement technique capable of using slow-response gas analyzers. (copernicus.org)
  • It is mainly driven by deep water producing convection processes in the Nordic Seas and thus sensitive to atmospheric changes on a broad spectrum of time scales. (awi.de)
  • Due to the extensive origins, it is still a challenge to figure out the contributions and originating regions for different sources of atmospheric NACs. (bvsalud.org)
  • We also present modern glaciomarine sediment accumulation data from quantitative differential bathymetry. (usgs.gov)
  • The mine environments in the virtual reality training have a high degree of realism, including simulations of smoke and other atmospheric conditions. (cdc.gov)
  • The Dome A region directly receives sedimentation from the Earth's stratosphere atmosphere, where the ice sheet is formed by primitive accumulation and stores global climate and atmospheric environmental information. (ncdc.ac.cn)
  • Global atmospheric pollution from depleted uranium particulates will result in massive depopulation on a global scale. (rense.com)
  • For all sites, minimum, maximum, median and mean values for the modelled ages and accumulation rates are calculated and presented. (lu.se)
  • Species-specific higher decomposition rates may have also caused the lower carbon accumulation rates in the peat bogs during the LIA. (elsevierpure.com)
  • The warm conditions of recent years have resulted in enhanced melt and reduction of the refreezing capacity in the lower accumulation area. (aber.ac.uk)
  • Principal Component Analysis of Tilia leaf tissues showed a different capacity for uptake/accumulation of PTEs in different locations. (reading.ac.uk)
  • AGENCY: At the request of the New England and Mid-Atlantic Fishery Management Councils (Councils), this notice announces a control date that may be applicable to, but not limited to, limits on the accumulation of excessive control or ownership of fishing privileges, qualifying landings history for an allocation-based management program, and referendum qualification, should one be required in the monkfish fishery. (justia.com)
  • The black urine of patients with alkaptonuria results from renal excretion of HGA, while ochronotic pigment is a sequela of HGA accumulation in the connective tissues of individuals who are affected. (medscape.com)
  • Optimism for Energy, accumulation of skills. (newmars.com)
  • Another atmospheric river will be streaming into western Washington and parts of British Columbia, Canada, this week. (cnn.com)
  • The first atmospheric river event hit us hard on November 13 to 16, and it dumped a lot, 150-300 mm (roughly 6 to 11 inches), of precipitation in less than 48 hours," Johnson Zhong, a meteorologist for Environment Canada said. (cnn.com)
  • The true eddy accumulation method is by design ideally suited for measuring a wide range of trace gases and other conserved constituents transported with the air. (copernicus.org)
  • Light interception, root mass and herbage accumulation in Arachis pintoi cv. (usp.br)
  • Further important atmospheric constituents are aerosols, which impact air quality and cloud formation, and volatile organic compounds. (copernicus.org)