已选(0)清除
条数/页: 排序方式: |
| Final Report. Evaluating the Climate Sensitivity of Dissipative Subgrid-Scale Mixing Processes and Variable Resolution in NCAR's Community Earth System Model 科技报告 来源:US Department of Energy (DOE). 出版年: 2015 作者: Jablonowski, Christiane 收藏  |  浏览/下载:8/0  |  提交时间:2019/04/05 Atmospheric General Circulation Models Community Atmosphere Model (CAM Spectral Element (CAM-SE) variable-resolution tropical cyclones subgrid-scale diffusion consistency stratospheric dynamics Dynamical Core Model Intercomparison Project (DCMIP) |
| Final technical report. Can microbial functional traits predict the response and resilience of decomposition to global change? 科技报告 来源:US Department of Energy (DOE). 出版年: 2015 作者: Allison, Steven D. 收藏  |  浏览/下载:3/0  |  提交时间:2019/04/05 microbial community carbon cycling traits extracellular enzyme global change |
| Introducing Enabling Computational Tools to the Climate Sciences: Multi-Resolution Climate Modeling with Adaptive Cubed-Sphere Grids 科技报告 来源:US Department of Energy (DOE). 出版年: 2015 作者: Jablonowski, Christiane 收藏  |  浏览/下载:4/0  |  提交时间:2019/04/05 Adaptive Mesh Refinement (AMR) Chombo Community Atmosphere Model (CAM) refinement criterion variable-resolution climate modeling high-order finite-volume methods non-hydrostatic atmospheric dynamical core shallow water cubed-sphere grid tropical |
| Tonopah Test Range Air Monitoring: CY2013 Meteorological, Radiological, and Airborne Particulate Observations 科技报告 来源:US Department of Energy (DOE). 出版年: 2014 作者: Mizell, Steve A; Nikolich, George; Shadel, Craig; McCurdy, Greg; Etyemezian, Vicken; Miller, Julianne J 收藏  |  浏览/下载:9/0  |  提交时间:2019/04/05 In 1963 the U.S. Department of Energy (DOE) (formerly the Atomic Energy Commission [AEC]) implemented Operation Roller Coaster on the Tonopah Test Range (TTR) and an adjacent area of the Nevada Test and Training Range (NTTR) (formerly the Nellis Air Force Range). This test resulted in radionuclide-contaminated soils at Clean Slate I II and III. This report documents observations made during on-going monitoring of radiological meteorological and dust conditions at stations installed adjacent to Clean Slate I and Clean Slate III and at the TTR Range Operations Control center. The primary objective of the monitoring effort is to determine if winds blowing across the Clean Slate sites are transporting particles of radionuclide-contaminated soils beyond both the physical and administrative boundaries of the sites. Results for the calendar year (CY) 2013 monitoring include: (1) the gross alpha and gross beta values from the monitoring stations are approximately equivalent to the highest values observed during the CY2012 reporting at the surrounding Community Environmental Monitoring Program (CEMP) stations (this was the latest documented data available at the time of this writing) (2) only naturally occurring radionuclides were identified in the gamma spectral analyses (3) the ambient gamma radiation measurements indicate that the average annual gamma exposure is similar at all three monitoring stations and periodic intervals of increased gamma values appear to be associated with storm fronts passing through the area and (4) the concentrations of both resuspended dust and saltated sand particles generally increase with increasing wind speed. However differences in the observed dust concentrations are likely due to differences in the soil characteristics immediately adjacent to the monitoring stations. Neither the resuspended particulate radiological analyses nor the ambient gamma radiation measurements suggest wind transport of radionuclide-contaminated soils. |
| IMPACTS OF INTERACTING ELEVATED ATMOSPHERIC CO2 AND O3 ON THE STRUCTURE AND FUNCTIONING OF A NORTHERN FOREST ECOSYSTEM: OPERATING AND DECOMMISSIONING THE ASPEN FACE PROJECT 科技报告 来源:US Department of Energy (DOE). 出版年: 2014 作者: Burton, Andrew J.; Zak, Donald R.; Kubiske, Mark E.; Pregitzer, Kurt S. 收藏  |  浏览/下载:2/0  |  提交时间:2019/04/05 Elevated carbon dioxide Elevated ozone Northern forests Aspen Birch: Sugar maple FACE experiment Net primary productivity Ecosystem carbon storage Community composition |
| Radiochemically-Supported Microbial Communities: A Potential Mechanism for Biocolloid Production of Importance to Actinide Transport 科技报告 来源:US Department of Energy (DOE). 出版年: 2014 作者: Moser, Duane P; Hamilton-Brehm, Scott D; Fisher, Jenny C; Bruckner, James C; Kruger, Brittany; Sackett, Joshua; Russell, Charles E; Onstott, Tullis C; Czerwinski, Ken 收藏  |  浏览/下载:17/0  |  提交时间:2019/04/05 Due to the legacy of Cold War nuclear weapons testing the Nevada National Security Site (NNSS formerly known as the Nevada Test Site (NTS)) contains millions of Curies of radioactive contamination. Presented here is a summary of the results of the first comprehensive study of subsurface microbial communities of radioactive and nonradioactive aquifers at this site. To achieve the objectives of this project cooperative actions between the Desert Research Institute (DRI) the Nevada Field Office of the National Nuclear Security Administration (NNSA) the Underground Test Area Activity (UGTA) and contractors such as Navarro-Interra (NI) were required. Ultimately fluids from 17 boreholes and two water-filled tunnels were sampled (sometimes on multiple occasions and from multiple depths) from the NNSS the adjacent Nevada Test and Training Range (NTTR) and a reference hole in the Amargosa Valley near Death Valley. The sites sampled ranged from highly-radioactive nuclear device test cavities to uncontaminated perched and regional aquifers. Specific areas sampled included recharge intermediate and discharge zones of a 100 000-km2 internally-draining province known as the Death Valley Regional Flow System (DVRFS) which encompasses the entirety of the NNSS/NTTR and surrounding areas. Specific geological features sampled included: West Pahute and Ranier Mesas (recharge zone) Yucca and Frenchman Flats (transitional zone) and the Western edge of the Amargosa Valley near Death Valley (discharge zone). The original overarching question underlying the proposal supporting this work was stated as: Can radiochemically-produced substrates support indigenous microbial communities and subsequently stimulate biocolloid formation that can affect radionuclides in NNSS subsurface nuclear test/detonation sites? Radioactive and non-radioactive groundwater samples were thus characterized for physical parameters aqueous geochemistry and microbial communities using both DNA- and cultivation-based tools in an effort to understand the drivers of microbial community structure (including radioactivity) and microbial interactions with select radionuclides and other factors across the range of habitats surveyed. |
| Hazardous Waste Facility Permit Community Relations Plan 科技报告 来源:US Department of Energy (DOE). 出版年: 2013 作者: Lopez, Lorraine B. [Los Alamos National Laboratory] 收藏  |  浏览/下载:0/0  |  提交时间:2019/04/05 Environmental Protection Waste management Hazardous Waste Permit Community Outreach Relations |
| Final Report for DOE contract DE-FG02-98ER62609 科技报告 来源:US Department of Energy (DOE). 出版年: 2012 作者: Webb, Thompson, III 收藏  |  浏览/下载:3/0  |  提交时间:2019/04/05 Climate Models Paleoclimatic Data Climate Model Testing NCAR Community Climate Model Sensitivity Experiments |
| Baseline for Climate Change: Modeling Watershed Aquatic Biodiversity Relative to Environmental and Anthropogenic Factors 科技报告 来源:US Department of Energy (DOE). 出版年: 2010 作者: Maurakis, Eugene G 收藏  |  浏览/下载:5/0  |  提交时间:2019/04/05 climate change modeling biodiversity fish communities macroinvertebrate community hydrologic models |
| DOE ER63951-3 Final Report: An Integrated Assessment of Geochemical and Community Structure Determinants of Metal Reduction Rates in Subsurface Sediments 科技报告 来源:US Department of Energy (DOE). 出版年: 2010 作者: Susan Pfiffner 收藏  |  浏览/下载:3/0  |  提交时间:2019/04/05 Uranium reduction microbial community structure phospholipids respiratory quinones |