• Pre-calibration of a simple Greenland Ice Sheet model for use

    studies in general. We also report implications of our study for the calibration of more-complex ice sheet models. 1 Introduction The Greenland Ice Sheet (GIS) is a major feature of the Arctic and may make important contributions to future sea level rise (Pfeffer et al., 2008). If the GIS were to melt completely,

    Get Price
  • Revisiting the absolute calibration of the Greenland ice-core

    vious Greenland age-scales, and one of its great advantages is that it possesses clearly defined uncertainty estimates. However, the GICC05 age-scale differs from the apparently well-conceived SFCP04 age-scale by up to 1200 years. We are therefore in the possession of no fewer than 5 differ-ent Greenland age-scales, none of which are in complete

    Get Price
  • Pre-calibration of a simple Greenland Ice Sheet model for use

    15 internally. In that model, yearly sea level rise due to GIS melting is a linear function of the 16 global mean surface air temperature anomaly, and this mass loss decreases exponentially with 17 the stock of ice remaining in the ice sheet (Nordhaus, 2010). 18 The lack of Greenland Ice Sheet representations in many integrated assessment models

    Get Price
  • A low climate threshold for south Greenland Ice Sheet demise

    Jan 07, 2020 · Models suggest that GIS demise is inevitable after a certain temperature threshold is passed ( 15, 16 ). Robinson et al. ( 16) estimate a warming threshold for an ice-free Greenland to be in the range of 0.8 to 3.2 °C, with a best estimate of 1.6 °C warming relative to preindustrial climate.

    Get Price
  • Contribution of Greenland ice sheet melting to sea level rise

    Ice core evidence suggests that the Greenland Ice Sheet (GIS) has survived this warm period but great uncertainties remain about the total Greenland ice reduction during the LIG and its sea level rise contribution.

    Get Price
  • Greenland - Free GIS data

    Greenland area: 49870919999 numgeometries: 1 gid: 101169 objectid: 84170 iso: GRL name: Greenland num_children: 3 geom_area: 918.1396994794804

    Get Price
  • Greenland Ice Sheet Today | Surface Melt Data presented by NSIDC

    Overview of ConditionsConditions in ContextAcknowledgementsSurface melting on the Greenland ice sheet ramped down at a near-normal pace in the weeks following the major melt event of early August (Figure 1). Only a few minor late-season melt events occurred in September and October. Overall, melting on the Greenland ice sheet for 2019 was the seventh-highest since 1978, behind 2012, 2010, 2016, 2002, 2007, and 2011 (Figure 2). Since 2000, the ice sheet has experienced a general increase in melting, with melt-day area for 2019 totaling 28.3 million square kilometers (10.9 million square miles) for the season. Melting was observed over nearly 90 percent of the island on at least one day, reaching the Summit Station and much of the high-altitude areas. It was particularly intense along the northern edge of the ice sheet, where compared to the 1981 to 2010 average, melting occurred for an additional 35 days. The number of days with melting was slightly above average along the western flank of the ice sheet as well, with about 15 to 20 more days...

    Get Price
  • On-Site SF Gas Analysis - MBW Calibration AG

    By Daniel Mutter, MBW Calibration AG A Brief History The use of SF 6 gas insulated switchgear ~GIS expanded rapidly during the 97s thanks to its reliability, compact dimensions, durability and safety. GIS failures although rare, were carefully investigated and the presence of water vapor was clearly identified as a common factor.

    Get Price
  • Quantifying the heat flux regulation of metropolitan land use

    Quantifying the effects of urban land-use/land-cover with regard to surface radiation and heat-flux regulation is important to ecological planning and heat stress mitigation.

    Get Price
  • An Actor-network Analysis of Highland Water Supply System in

    The water supply serves 99.6% of total population of Taipei City. In fact, however, the Taipei Water Department only supplied water reaching the areas with level up to first normal compression.

    Get Price
  • A computationally efficient model for the Greenland ice sheet

    We present a one-dimensional model of the Greenland Ice Sheet (GIS) for use in analysis of future sea level rise. Simulations using complex three-dimensional models suggest that the GIS may respond in a nonlinear manner to anthropogenic climate forcing and cause potentially nontrivial sea level rise. These GIS projections are, however, deeply uncertain. Analyzing these uncertainties is

    Get Price
  • The albedo loss from the melting of the Greenland ice sheet

    Dec 16, 2020 · Abstract. I extend the reduced Greenland ice sheet (GIS) model-module of DICE-GIS (Nordhaus, Proc Natl Acad Sci 25 (116):12261–12269, 2019) by integrating snow-albedo feedback (SAF) and potential tipping of the ice sheet into the resuming DICE-GIS SAF model. The increasing global temperature no longer only results in the melting of the GIS, but also in albedo loss, which in turn impacts the strength of the SAF.

    Get Price
  • Greenland - East View Geospatial

    Greenland was given home rule in 1979 and acquired the status of a district nation within the Kingdom of Denmark. Although the Danish government decided to map Greenland as early as 1878, the first genuine topographic surveys were conducted by the Lauge Koch expeditions to the north of Greenland from 1917 to 1923, in 18 sheets at 1:300,000 scale.

    Get Price
  • Ehab Sousa, PMP, PMI-RMP - Project Manager - Shuaa Energy 3

    4. Supervision of all GIS related tests i.e. purity, gas percentage,… Project Manager for the following Projects:--Dynamic Reactive power Compensation at Jeddah North 380 KV S/S-Expansion of Jeddah North West 380 KV S/S Achievement Responsibilities in KSA: 1. Checking the scheme of local control panels, protection and remote control panels. 2.

    Get Price
  • Greenland’s Ice Sheet and Climate Change Policy, Part 1 of 2

    Aug 16, 2019 · After including the temperature/melting dynamics of the Greenland ice sheet into his DICE model, and showing how his (simplified) approach approximates the scientific literature’s handling of the topic, Nordhaus concludes that “strong climate policy in the optimal run can stop the GIS decline well short of complete disintegration or

    Get Price
  • Rapid Communication Constraining Holocene Be production rates

    ABSTRACT: The absence of a production rate calibration experiment on Greenland has limited the ability to link 10Be exposure dating chronologies of ice-margin change to independent records of rapid climate change. We use radiocarbon age control on Holocene glacial features near Jakobshavn Isbræ, western Greenland, to investigate 10Be production rates

    Get Price
  • 973-Sulfr hexafluoride Gas Analyzer | insulating gas Humidity Purity Test |Testnordic.com

    Description. 973-sf6 gas gas analyzer used for simultaneous measurement of humidity, SF 6 purity and SO 2 concentration. Pure SF 6 is the standard filling within GIS, but over time gas compartments become contaminated with water vapor (H 2 O) through permeation and by desorption from internal materials. Whilst water vapor and SF 6 do not normally react with each other, in the presence of a high-energy discharge, hydrogen and oxygen disassociated from water vapor will react with the sulfur and

    Get Price
  • ABSTRACT: The Use of Outcrop-Calibrated Gamma Logs from East

    To achieve this, the use of outcrop analogues allow the calibration of gamma log signatures to facies identified from detailed sedimentary logs, which are then compared to subsurface wireline data. High resolution sedimentary and hand-held, spectral gamma logs have been constructed from three well exposed sections through the Upper Triassic of East Greenland.

    Get Price
  • Low-Temperature Calibration Facility

    Consisting of an exceptionally stable and uniform fluid bath, a NIST certified Standard Platinum Resistance Thermometer (SPRT), thermistor and RTD sensor scanners, and a computer controller, the fully automated system is capable of calibrating sensors with a standard uncertainty of ~3 mK (traceable to NIST) at temperatures as cold as -60°C. The calibration facility has provided calibration values for sensors that are deployed in Alaska, Greenland, Antarctica, as well as in the continental

    Get Price
  • Inferred basal friction and surface mass balance of the

    ice-flow models of the GIS and AIS. These data include among others (1) ice coring that provides temperature pro-files for calibration of thermal models (Greve,1997b,2005); (2) radar stratigraphy that provides layering and age struc-ture (Fahnestock et al.,2001); (3) sediment coring in pro-glacial lakes around the GIS (Briner et al.,2010,2011

    Get Price
  • HG KUBE – LNI Swissgas

    The HG KUBE is able to generate up to 260 cc/min of Hydrogen with purity better than 99.9996% and pressure up to 9 bar (130 psi). The HG KUBE includes a cell with polymeric membrane (PEM) using distilled water. No acid or alkaline solutions are involved. The innovative static drying system ensures the maximum grade of hydrogen purity, protects the […]

    Get Price
  • The iron isotopic composition of subglacial streams draining

    Sep 15, 2017 · In this study, we present the first measurements of iron (Fe) stable isotopic composition (δ 56 Fe) of subglacial streams draining the Greenland Ice Sheet (GIS). We measure the δ 56 Fe values [(δ 56 Fe, ‰ = (56 Fe/ 54 Fe) sample /(56 Fe/ 54 Fe) standard − 1) × 10 3] of both dissolved and suspended sediment Fe in subglacial outflows from five distinct land-terminating glaciers.

    Get Price
  • RH Systems - 973A, dew point mirror hygrometer, humidity

    For %Volume SF 6 purity measurement and built-in gas recovery system, see the RH Systems 973-sf 6. Full Color Touch Screen. The system uses a full color active matrix liquid crystal display with an integral touch panel. It has a high contrast ratio and a wide viewing angle for easy readability.

    Get Price
  • GreenlandIce Sheet and Climate Change Policy

    GreenlandIce Sheet and Climate Change Policy, Part 1 of 2: Economics of the disintegration of the Greenland ice sheet

    Get Price
  • GIMP Data | National Snow and Ice Data Center

    The objective of the Greenland Ice sheet Mapping Project (GIMP) is to establish benchmark data sets for observing ice sheet change and stability. The acquired data cover multiple years, beginning in 2000, and originate from a variety of satellites and sensors, including the U.S. Geological Survey(USGS) and NASALandsat 7 and Landsat 8, the European Space Agency(ESA) Copernicus Sentinel

    Get Price
  • Industrial Applications of CES - csl.noaa.gov

    Fuel cell hydrogen purity analysis Gas chromatography ASTM D7941 / D7941M –14 - Standard Test Method for Hydrogen Purity Analysis Using a Continuous Wave Cavity Ring-Down Spectroscopy Analyzer Airborne molecular contamination cleanroom monitoring Ion mobility spectrometry Industrial process control Gas chromatography, chemiluminescence

    Get Price
  • 17 September 2009 doi:10.1038/nature08355 LETTERS

    Greenland ice sheet (GIS) is an important concern1, especially in the light of new evidence of rapidly changing flow and melt con- ditions at the GIS margins 2 .

    Get Price
  • Journal Articles - SafetyLit

    High prevalence of medicine-induced attempted suicides among females in Nuuk, Greenland, 2008-2009 Involuntary psychiatric hospital admissions : A comparison between five hospitals in three German federal states A meaningful life is worth living: Meaning in life as a suicide resiliency factor

    Get Price
  • Proxy (climate) - Wikipedia

    This is empirically calibrated from measurements of temperature and δ as a = 0.67 ‰/°C for Greenland and 0.76 ‰/°C for East Antarctica. The calibration was initially done on the basis of spatial variations in temperature and it was assumed that this corresponded to temporal variations.

    Get Price
  • insulating gas Analyzers Archives - Ground Testing | Cable Applications

    The 973-SF 6 is an advanced SF 6 gas analyzer for the measurement of humidity, SF 6 purity and SO 2 concentration in SF 6 gas insulated switchgears (GIS) and other high voltage equipment. With its internal gas containment and recovery system, the 973-SF 6 provides a high quality and environmentally safe measurement solution within a single self

    Get Price