Hei hei everyone!
We have the pleasure of inviting you all to Benoit Lecavaliers talk this Thursday (June 1st) at 15:00 in the Undervisningsrom4020 in 4th floor, West Wing GFI. The talk will be on his newest paper published last week with the title “A high Arctic Holocene temperature record and Greenland ice sheet evolution “. For those of you who haven’t met Benoit yet, he’s a visiting PhD student from Memorial University, St. John’s, Canada until mid June, at the moment located in the top floor in the West Wing.
Cheers,
Silje and Kerim
Abstract:
We present a revised and extended high Arctic air temperature reconstruction from a single proxy that spans the past ~12,000 years (up to 2009 CE). Our new reconstruction from the Agassiz ice cap (Ellesmere Island, Canada) indicates an earlier and warmer Holocene Thermal Maximum with early Holocene temperatures that are 4-5 oC warmer compared to a previous reconstruction and regularly exceed contemporary values for a period of ~3,000 years. Our results show that air temperatures in this region are now at their warmest in the past 6,800–7,800 years and that the recent rate of temperature change is unprecedented over the entire Holocene. The warmer early Holocene inferred from the Agassiz ice core leads to an estimated ~1 km of ice thinning in Northwest Greenland during the early Holocene using the Camp Century ice core. Ice modeling results show that this large thinning is consistent with our new air temperature reconstruction. The modeling results also demonstrate the broader significance of the enhanced warming, with a retreat of the northern ice margin behind its present position in the mid Holocene and a ~25% increase in total Greenland ice sheet mass loss (~1.4 m sea-level equivalent) during the last deglaciation, both of which have implications for interpreting geodetic measurements of land uplift and gravity changes in northern Greenland.
Monthly meeting in Bergen.
Contact: Jørund
Pi meeting at CIC -Contact Hellek@fys.ku.dk for items to the agenda
Senior bootcamp for (Norwegian) PIs
contact Jørund
First initial meeting on how to develop ice2ice teaching materials for high school @CIC.
invitation (in danish) send to selected group of high school teachers can be found here: ice2ice-invitation-gymnasieskolen.
Contact Hellek@fys.ku.dk or Kerim
PI meeting @CPH
Contact Hellek@fys.ku.dk for items to the agenda
Arndalen, talk about ice2ice to Norwegian Politicians.
contact Kerim or Eystein
Extended PI meeting. Focus warm arctic ocean.
Wednesday in 235 at NBI and/or after lunch in 016.
Thursday in 016.
Note the new date. Meeting has been moved from 15/8 to 6/9. Updates from the Copenhagen groups.
09:00-09:30 -Sindhu: “Total air content results from Renland and preliminary interpretation”-20 min, 10 min Q
09:30-09:50-Kerim: “why am I in Copenhagen”, 20 min total
09:50:-10:30-Nicholas: “Highly temporally resolved response to seasonal surface melt of the Zachariae and 79N outlet glaciers in Northeast Greenland”, 30 min, 10 Q
10.30-10:40 Short break
10:40-11:10-Shuting/Jens “update on Idas work on nudging of the sea ice” 20 min, 10 Q
11:10-11:35-Diana: “Northern hemisphere methane realize in MIS5a as revealed by high-resolution gas measurements in ice cores.” 15 min, 10 Q
11:35-11:45-Paul: “Update on Mt. Brown project”
11:45-12:00 Update of publication list and misc. Please prepare one minute (one slide) about any new puplications/new submissions. Also let Helle know of new puplication plans. 10 min
12.00 Lunch at CIC. If you stay for lunch and is not at CIC normally please let Helle know.
Further agenda for those who are interested
- Paul: Ideas for new project about dust
ACDC 2017
Topic: The Dynamics of the Seasonal Cycle
Date: September 11th – 22nd, 2017
Location: Rondvassbu, Rondane National Park, Norway
Application deadline: 10th of March, 2017
Online application form: HERE
Target: Advanced PhD candidates and early career scientists.
Goal: To mix students and lecturers with empirical and dynamical training within
climate science and focus on understanding the basic principles and dynamics of the
seasonal cycle across different timescales. This summer we will explore what we can
learn from the largest reoccurring change in Earth´s climate.
Confirmed lecturers: Peter Huybers (Harvard), David Battisti (University of
Washington), Camille Li (UiB), Jake Gebbie (WHOI), Patrick Heimbach (UTexas/MIT),
Kerim H. Nisancioglu (UiB/UiO), Øyvind Paasche (UiB), Tore Furevik (UiB).
- The workshop starts Wednesday Sep 20 at 12.00, and ends Friday Sep 22 at 12.00.
- A PROMICE 10-year jubilee and reception is planned for the afternoon of Sep 22.
- to present and discuss results on modeling of meltwater retention processes in snow and firn on ice sheets and glaciers;
- to plan and coordinate meltwater retention model development;
- to emphasize optical remote sensing snow parameter data comparison and data assimilation;
- to formulate a protocol for a meltwater retention model intercomparison project (RetMIP)
- Snow model development
- Meltwater retention model validation
- Meltwater retention model intercomparison project (RetMIP)
- Optical remote sensing to improve snow models
- survey and prioritize remotely sensed snow parameter data users’ requirements for global and regional snow information
- discuss how to enhance methods for estimating snow parameters, either from remote sensing or from modeling, and to evaluate advantages and disadvantages of the different approaches
- consult users about the utility/interest in other snow products suitable for studying climate-related issues.
- a protocol for a retention model intercomparison project (RetMIP) including instructions and datasets for validation.
- a list of requirements and minimum accuracy levels for models using optical remotely sensed snow parameter data
- a journal special issue like the 2016 special issue in Frontiers in Earth Science – Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling, papers feeding into the IPCC Special Report on Climate change and the oceans and the cryosphere.
ICAT PhD school 2017
Week 39 -2017
Scope and participation:
The PhD course is aimed at PhD students and junior postdocs who conduct ice core analysis or are users of ice core data (glaciological, oceanographic, climate modelers).
The results from ice cores cannot be fully appreciated without understanding the analytical techniques behind the measurements as well as the implicit assumptions related to the emission, transport and deposition of the species analysed.
These include a variety of approaches such as continuous flow analysis (CFA) for the analysis of impurities, but also ion chromatography, ICP-MS and a number of other methods used for high resolution measurements of the impurity content in ice cores. Laser spectroscopy has replaced older-generation technology such as mass spectrometry for the analysis of some gases preserved in polar ice.
ICAT aims to educate a new generation of ice core researchers and foster a collaborative environment for future glaciological projects.
The course will enhance the knowledge between PhD’s within the ice core community on new methods developed for the analysis of ice core climate.
Application will open shortly and the application deadline is 1st of June.
Contact Hellek@fys.ku.dk
09:00-09:30 –Mads- The role of the Southern Ocean in the global ocean circulation and its representation in coarse resolution models-(20 min+ 10 min Q)
09:30-10:00- Andreas-The Surface Mass Balance of the Greenland Ice Sheet during the Last Interglacial (20 min+ 10 min Q)
10:00-10:10-Silje short introduction
10:10-10:20-Jonathan short introduction
Break 10:20-10:35
10:35-10:55 Peter on meltwater meeting
10:55-11:25 Martin O update on project? (20 min+ 10 min Q)
11:25-11:40 Martin S preliminary results from an analysis of Shuting’s long run using self-organizing maps.
11:40-11:50 Update of publication list. Please prepare one minute (one slide) about any new publications/new submissions. Also let Helle know of new publication plans.
11.50-12:00 Update on Future meetings