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Today's Topics:
1. Deadline Extended! Postdoctoral researcher opportunity in
large-scale atmospheric dynamics at the University of Bergen
(Stefan Sobolowski)
2. postdoctoral position 2-yrs climate variability LOCEAN
(Juliette.Mignot)
----------------------------------------------------------------------
Message: 1
Date: Mon, 5 Dec 2016 08:27:51 +0100
From: Stefan Sobolowski <stefan.sobolowski@uni.no>
To: met-jobs@lists.reading.ac.uk
Subject: [Met-jobs] Deadline Extended! Postdoctoral researcher
opportunity in large-scale atmospheric dynamics at the University of
Bergen
Message-ID: <957BA77F-AF3D-402C-BD0E-3205197B77CB@uni.no>
Content-Type: text/plain; charset="utf-8"
The deadline for the following postdoctoral opportunity has been extended to Jan 15th. Please disseminate widely. Potential candidates may contact the project PIs for more information.
Many thanks!
Camille Li (camille@uib.no <mailto:camille@uib.no>)
Stefan Sobolowski (stefan.sobolowski@uni.no <mailto:stefan.sobolowski@uni.no>)
Postdoctoral researcher opportunity in large-scale atmospheric dynamics at the University of Bergen
We'd like to draw your attention to an opening for a postdoctoral researcher (2 years) in large-scale atmospheric dynamics at the Geophysical Institute, University of Bergen and the Bjerknes Centre for Climate Research. The position is connected to a project on "Dynamics of Arctic-Midlatitude Teleconnections: Mechanisms, robustness and tropical modulation" funded by the Research Council of Norway. The application deadline is 15 January, 2017.
This project takes a dynamics-based approach to investigate whether the rapidly changing climate in the Arctic is altering midlatitude atmospheric circulation. Though there are many theories for how Arctic-midlatitude teleconnections operate, there is as of yet no consensus about their importance relative to other influences (e.g., the tropics, the stratosphere). The answer to this question is essential for understanding both year-to-year variations in regional climate and weather extremes, and projecting how these will change in a warming world. The successful candidate will use reanalysis data and numerical models to identify and evaluate candidate mechanisms.
For more details about the positions, instructions on how to submit an application, and contact information, please see: https://www.jobbnorge.no/en/available-jobs/job/129905/researcher-in-large-scale-atmospheric-dynamics <https://www.jobbnorge.no/en/available-jobs/job/129905/researcher-in-large-scale-atmospheric-dynamics>
+++++++++++++++++++++++++++++++
Stefan Sobolowski, Ph.D.
Research Scientist II
Uni Research Climate & the Bjerknes Centre for Climate Research
112 Nygårdsgaten 5008, Bergen, Norway
stefan.sobolowski@uni.no
+++++++++++++++++++++++++++++++
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Message: 2
Date: Mon, 5 Dec 2016 12:28:19 +0100
From: "Juliette.Mignot" <Juliette.Mignot@locean.upmc.fr>
To: met-jobs@lists.reading.ac.uk
Subject: [Met-jobs] postdoctoral position 2-yrs climate variability
LOCEAN
Message-ID: <ea149425-e1ee-48ee-4881-bd40716520f3@locean.upmc.fr>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
/[apologies for cross-postings]/
Dear colleagues,
A *24-month post-doctoral position *is open at LOCEAN (Paris, France) to
work on the reconstruction and understanding of the climate variability
over the historical period combining observations and climate modelling.
More details below.
This research is funded by the Labex L-IPSL project.
Feel free to circulate this offer.
Thanks a lot, and best regards
Juliette Mignot and Eric Guilyardi
---
The excellence laboratory L-IPSL of the /Institut Pierre-Simon Laplace/
offers a post-doctoral position of 2 years to perform and analyze
ocean-atmosphere coupled reconstructions of the recent climate variability.
*Context: *The understanding and perception of climate change due to
human activities is complicated by internal variability that occurs over
a wide range of time scales (from days to several decades). This
internal variability arises from the chaotic nature of fluid motions and
from the interactions between the components of the climate system
(atmosphere, ocean, cryosphere, continents and biosphere). It comes in
addition to externally forced variability from both natural (solar
activity and volcanism) and anthropogenic sources (emissions of
greenhouse gases –GHG, sulfate aerosols, land-use, /etc./).
This project aims to understand the role of the ocean in the 20^th
century climate variability to better understand and anticipate future
climate evolution in the context of climate change. For this purpose, we
propose to perform reconstructions of the climate over the historical
period (from around 1850) in which internal variability to observations
is constrained to observations. This is achieved through nudging
techniques in a coupled climate model. Each external forcing can then be
considered alternatively in order to advance on the attribution of the
past observed variations. The project will benefit from the
unprecedented amount of high quality observations during the last
decades, notably in the ocean.**
**
*Description of work: *Given the central role of the ocean in the global
scale variability, reconstructions of the global climate variability
have to be performed in ocean-atmosphere-cryosphere coupled mode.
Building on extensive expertise and recent results in the IPSL decadal
group, we will investigate new methods to constrain climate simulations
to the observed variability. We propose to focus initially on perfect
model configurations in order to understand the mechanisms governing the
adjustment of the model to the observations. The methods that show
potential in the perfect model set up will be then tested in historical
conditions. This will eventually contribute to the realisation of
coupled reconstructions of the climate variability over the 20^th
century based on the IPSL model, to be use as a shared resource for a
number of IPSL projects.**
In a first step, we will pursue the methodology developed at IPSL where
the ocean is only constrained from the surface. The objective is both to
avoid tampering with the oceanic internal dynamical and to benefit from
multi-decadal surface observations. A recent test in a perfect model
framework has shown that combining a physical understanding of the
variability mechanisms and a simple nudging with a variable
physically-based restoring coefficient is quite successful at
reproducing extreme events of the large scale oceanic circulation. This
exciting new approach will be tested in historical conditions,
addressing challenges related to data availability and model biases
In a second step, the coupled model could be constrained in specific
regions/domains or using specific forcings to explore the mechanisms of
the reconstruction and teleconnections, including over land. The use of
a dynamical atmosphere nudging could also be tested. Supposing that
atmospheric circulation is weakly sensitive to external forcing, this
set up will indeed allow performing conditional attribution experiments,
where external forcings are only applied separately and successively, in
order to understand the causality of the different fluctuations observed
in the climate system and their link with anthropogenic forcing or
natural variations.
**
*Supervision and working environment:*The work will be conducted under
the main supervision of J. Mignot (LOCEAN), E. Guilyardi (LOCEAN) and D.
Swingedouw (EPOC). Itwill be performed within the project "understanding
and attributing climate variability since the early 20^th century,
funded by the Labex L-IPSL and involving 6 laboratories of the IPSL
federation. The candidate will thus beneficiate from rich interactions
with ocean, atmosphere and climate dynamics experts as well as external
forcings, climate modelling, data reanalysis and reconstructions
experts, all present at IPSL. This work will also contribute to the
recently funded H2020-Blue Action proposal, in which inter-comparisons
of climate reconstructions over the recent decades are proposed as well
as decadal hindcasts based on improved reconstructions of initial
conditions. The work will be mainly conducted at LOCEAN, with regular
trips to EPOC (Bordeaux)
*Duration and salary:*The post-doctorate will be recruited for 24 months
with a net monthly salary around 2000 euros, commensurate with
experience. This includes social services and health insurance.
*Contact for applications:*Applications should include a vita, a
statement of research interests and the names of at least two references
including e-mail addresses and phone numbers. Applications should be
submitted by e-mail to Juliette Mignot
(juliette.mignot@locean-ipsl.upmc.fr) and Eric Guilyardi
(eric.guilyardi@locean-ipsl.upmc.fr
<mailto:eric.guilyardi@locean-ipsl.upmc.fr>) before January 30^th 2017
--
Juliette Mignot
Locean
Universite Pierre et Marie Curie, Case courrier 100
4 place Jussieu, 75252 Paris Cedex 05, France
phone/fax : +33 1 4427 3304 / 7159
AND
Climate and Environmental Physics
University of Bern, Physics Institute
Sidlerstrasse 5, 3012 Bern, Switzerland
phone/fax : +41 31 631 4275 / 8742
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