GSTDTAP

浏览/检索结果: 共5条,第1-5条 帮助

已选(0)清除 条数/页:   排序方式:
研究发现微生物排放驱动大气甲烷浓度创新高 快报文章
资源环境快报,2024年第20期
作者:  董利苹,杜海霞
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:475/0  |  提交时间:2024/10/30
Methane Carbon Isotopes  Microbial Emissions  Record High Atmospheric Methane Growth  
2021年北方森林火灾的二氧化碳排放占比打破历史纪录 快报文章
气候变化快报,2023年第06期
作者:  董利苹
Microsoft Word(13Kb)  |  收藏  |  浏览/下载:589/0  |  提交时间:2023/03/20
Boreal Fires in 2021  CO2 Emission  Record-high  
Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018 期刊论文
NATURE, 2020, 581 (7808) : 294-+
作者:  Ibrahim, Nizar;  Maganuco, Simone;  Dal Sasso, Cristiano;  Fabbri, Matteo;  Auditore, Marco;  Bindellini, Gabriele;  Martill, David M.;  Zouhri, Samir;  Mattarelli, Diego A.;  Unwin, David M.;  Wiemann, Jasmina;  Bonadonna, Davide;  Amane, Ayoub;  Jakubczak, Juliana;  Joger, Ulrich;  Lauder, George V.;  Pierce, Stephanie E.
收藏  |  浏览/下载:36/0  |  提交时间:2020/05/25

Warming surface temperatures have driven a substantial reduction in the extent and duration of Northern Hemisphere snow cover(1-3). These changes in snow cover affect Earth'  s climate system via the surface energy budget, and influence freshwater resources across a large proportion of the Northern Hemisphere(4-6). In contrast to snow extent, reliable quantitative knowledge on seasonal snow mass and its trend is lacking(7-9). Here we use the new GlobSnow 3.0 dataset to show that the 1980-2018 annual maximum snow mass in the Northern Hemisphere was, on average, 3,062 +/- 35 billion tonnes (gigatonnes). Our quantification is for March (the month that most closely corresponds to peak snow mass), covers non-alpine regions above 40 degrees N and, crucially, includes a bias correction based on in-field snow observations. We compare our GlobSnow 3.0 estimates with three independent estimates of snow mass, each with and without the bias correction. Across the four datasets, the bias correction decreased the range from 2,433-3,380 gigatonnes (mean 2,867) to 2,846-3,062 gigatonnes (mean 2,938)-a reduction in uncertainty from 33% to 7.4%. On the basis of our bias-corrected GlobSnow 3.0 estimates, we find different continental trends over the 39-year satellite record. For example, snow mass decreased by 46 gigatonnes per decade across North America but had a negligible trend across Eurasia  both continents exhibit high regional variability. Our results enable a better estimation of the role of seasonal snow mass in Earth'  s energy, water and carbon budgets.


Applying a bias correction to a state-of-the-art dataset covering non-alpine regions of the Northern Hemisphere and to three other datasets yields a more constrained quantification of snow mass in March from 1980 to 2018.


  
Temperate rainforests near the South Pole during peak Cretaceous warmth 期刊论文
NATURE, 2020, 580 (7801) : 81-+
作者:  Johann P. Klages;  Ulrich Salzmann;  Torsten Bickert;  Claus-Dieter Hillenbrand;  Karsten Gohl;  Gerhard Kuhn;  Steven M. Bohaty;  ;  rgen Titschack;  Juliane Mü;  ller;  Thomas Frederichs;  Thorsten Bauersachs;  Werner Ehrmann;  Tina van de Flierdt;  Patric Simõ;  es Pereira;  Robert D. Larter;  Gerrit Lohmann;  Igor Niezgodzki;  Gabriele Uenzelmann-Neben;  Maximilian Zundel;  Cornelia Spiegel;  Chris Mark;  David Chew;  Jane E. Francis;  Gernot Nehrke;  Florian Schwarz;  James A. Smith;  Tim Freudenthal;  Oliver Esper;  Heiko Pä;  like;  Thomas A. Ronge;  Ricarda Dziadek
收藏  |  浏览/下载:29/0  |  提交时间:2020/05/13

The mid-Cretaceous period was one of the warmest intervals of the past 140 million years(1-5), driven by atmospheric carbon dioxide levels of around 1,000 parts per million by volume(6). In the near absence of proximal geological records from south of the Antarctic Circle, it is disputed whether polar ice could exist under such environmental conditions. Here we use a sedimentary sequence recovered from the West Antarctic shelf-the southernmost Cretaceous record reported so far-and show that a temperate lowland rainforest environment existed at a palaeolatitude of about 82 degrees S during the Turonian-Santonian age (92 to 83 million years ago). This record contains an intact 3-metre-long network of in situ fossil roots embedded in a mudstone matrix containing diverse pollen and spores. A climate model simulation shows that the reconstructed temperate climate at this high latitude requires a combination of both atmospheric carbon dioxide concentrations of 1,120-1,680 parts per million by volume and a vegetated land surface without major Antarctic glaciation, highlighting the important cooling effect exerted by ice albedo under high levels of atmospheric carbon dioxide.


  
West Valley Demonstration Project Annual Site Environmental Report Calendar Year 2013 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Rendall, John D.;  Steiner, Alison F.;  Pendl, Michael P.
收藏  |  浏览/下载:29/0  |  提交时间:2019/04/05
West Valley Demonstration Project  WVDP  Annual Site Environmental Report  ASER  Calendar Year 2013  CH2M HILL • B&W West Valley  LLC  DE-EM0001529  Public Health and Safety and the Environment Are Protected  Airborne and Waterborne Releases to the MEOSI  Climate Change  DOE/NYSERDA Consent Decree  Dose Assessment  Dose to Biota  Drinking Water  Environmental Characterization Support Services  Environmental Compliance  Environmental Management System: EMS  Environmental Monitoring  Groundwater Protection Program  High-Level Waste (HLW) Canister Interim Storage System  HLW canister storage pad  National Emissions Standards for Hazardous Air Pollutants  NESHAP  National Environmental Policy Act  NEPA  North Plateau Full-Scale Permeable Treatment Wall  PTW  Nuclear Regulatory Commission (NRC)-Licensed Disposal Area  NDA  Performance Indicators  Phase 1 Decommissioning and Facility Disposition Contract  Phase 1 Studies  Quality Assurance  Record of Decision  ROD  Resource Conservation and Recovery Act  RCRA  Safety Success  Site Sustainability Plan  SSP  State Pollutant Discharge Elimination System (SPDES) Permit Noncompliance  SPDES  Tank and Vault Drying System  T&VDS  Vertical Storage Casks  VSC  Waste Minimization and Pollution Prevention  Waste Tank Farm  WTF  Waste-Incidental-to-Reprocessing  WIR