Predictability of weather and climate

Research group

Research theme

Sub department

About

Related research groups

QBOi El Niño Southern Oscillation experiments: Teleconnections of the QBO

Authors:

Hiroaki Naoe, Jorge L Garcia-Franco, Chang-Hyun Park, Mario Rodrigo, Froila M Palmeiro, Federico Serva, Masakazu Taguchi, Kohei Yoshida, James A Anstey, Javier Garcia-Serrano, Seok-Woo Son, Yoshio Kawatani, Neal Butchart, Kevin Hamilton, Chih-Chieh Chen, Anne Glanville, Tobias Kerzenmacher, Francois Lott, Clara Orbe, Scott Osprey, Mijeong Park, Jadwiga H Richter, Stefan Versick, Shingo Watanabe
More details from the publisher

Quasi-biennial oscillation disrupted by abnormal Southern Hemisphere stratosphere

Authors:

James Anstey, Tim Banyard, Neal Butchart, Lawrence Coy, Paul Newman, Scott Osprey, Corwin Wright
More details from the publisher

Quasi-biennial oscillation disrupted by abnormal Southern Hemisphere stratosphere

Authors:

James A Anstey, Timothy P Banyard, Neal Butchart, Lawrence Coy, Paul A Newman, Scott Osprey, Corwin Wright
More details from the publisher

Quasi-biennial oscillation disrupted by abnormal Southern Hemisphere stratosphere

Authors:

James A Anstey, Timothy P Banyard, Neal Butchart, Lawrence Coy, Paul A Newman, Scott Osprey, Corwin Wright
More details from the publisher

Recovering valuations on Demushkin fields

Authors:

Jochen Koenigsmann, K Strommen

Abstract:

Let $K$ be a field with $G_K(2) \simeq G_{\mathbb{Q}_2}(2)$, where $G_F(2)$ denotes the maximal pro-2 quotient of the absolute Galois group of a field $F$. We prove that then $K$ admits a (non-trivial) valuation $v$ which is 2-henselian and has residue field $\mathbb{F}_2$. Furthermore, $v(2)$ is a minimal positive element in the value group $\Gamma_v$ and $[\Gamma_v:2\Gamma_v]=2$. This forms the first positive result on a more general conjecture about the structure of pro-$p$ Galois groups. As an application, we prove a strong version of the birational section conjecture for smooth, complete curves $X$ over $\mathbb{Q}_2$, as well as an analogue for varieties.
Details from ArXiV