您好,欢迎访问北京大学海洋研究院官方网站!

设为首页 | 加入收藏 | 手机版
AGU期刊一周Research Spotlight
所在位置: 首页 >> 特色项目 >> AGU信息 >> AGU期刊一周Research Spotlight >> 正文
AGU发布最新Editor's Highlight和国外工作学习机会(Nov 29~Dec 5, 2019)
时间:2019年11月29日 14:50来源: 点击数:

Extreme Summer Heat over Europe Is Predictable Week-to-Week

Forecasts made one to a few weeks in advance, known as "subseasonal to seasonal" predictions, show more skill in predicting extreme summer heat waves over Europe than spells of normal or cold weather.

SOURCE: Geophysical Research Letters

A measure of forecast skill called the extremal dependence index (EDI) for 4 prediction models, in the different symbols (triangle, circle, square, diamond), and 6 sub-regions of Europe (Scandinavia, Western and Eastern Europe, Russia, Western and Eastern Mediterranean). The different colors (orange, black and blue) refer to predictions of warm, normal or cold conditions, respectively. EDI is consistently greater than zero, signifying skill, in the case of warm conditions for most models and regions. Credit: Wulff and Domeisen [2019], Figure 3

Predictions about the general character of a season—hotter or colder, wetter or drier than usual—are useful for a variety of applications. Despite decades of research and implementation of models that have otherwise led to quantifiable improvements, these predictions, which are made a few seasons to a month in advance, are still too poor in midlatitudes to be considered useful for most decisions; in other words, their skill is low.

In recent years, a community effort to bridge between the time scales typical of weather forecasts and those of seasonal predictions, resting on advances in computing power, has opened up the way to make predictions one to four weeks in advance. This new class of predictions is called “subseasonal to seasonal” (S2S).

Wulff and Domeisen [2019] investigate the skill of S2S predictions over Europe from four leading centers worldwide. Intriguingly, they find that summer heat waves are more predictable over most regions of Europe compared to spells of normal or cold weather. In other words, heat waves such as those experienced this past summer could be better anticipated than typical average or cold climate events.

This result is of scientific and general interest. Not only does it justify the community and computing investment put into S2S, but it also gives hope that societal expectation for relevant and timely information may be met with current systems.

Citation: Wulff, C. O., & Domeisen, D. I. V. [2019]. Higher subseasonal predictability of extreme hot European summer temperatures as compared to average summers. Geophysical Research Letters, 46. https://doi.org/10.1029/2019GL084314

—Alessandra Giannini, Editor, Geophysical Research Letters

AGU发布最新国外工作学习机会:

1. M.S. and Ph.D. Graduate Assistantships in Atmospheric Science

Laramie, Wyoming

University of Wyoming Department of Atmospheric Science

The graduate program also offers a dual-degree International M.S. in Atmospheric Science (InMAS), an exchange program with a consortium of European universities.

https://findajob.agu.org/job/8011732/m-s-and-ph-d-graduate-assistantships-in-atmospheric-science/

2. Morton K. Blaustein Postdoctoral Scholar

Baltimore, Maryland

Johns Hopkins University Earth & Planetary Sciences

https://findajob.agu.org/job/8011730/morton-k-blaustein-postdoctoral-scholar/

3. PhD Position on the Atmospheric Impacts of High Altitude Emissions

Delft, Netherlands

2325 - 2972 euros monthly (full-time basis)

Delft University of Technology, Aircraft Noise and Climate Effects Section

On understanding the transport, chemistry and micro-physics pathways related to high altitude aviation emissions' aerosol and cloud impacts.

https://findajob.agu.org/job/8011729/phd-position-on-the-atmospheric-impacts-of-high-altitude-emissions/

4. Graduate Research Assistant

Pullman, Washington State

Washington State University, Department of Biosystems Engineering

https://findajob.agu.org/job/8011727/graduate-research-assistant/

5. Graduate Student Opportunities in Geosciences

Waco, Texas

Up to $24,000/year + benefits

Baylor University

Full-time PhD and MS students starting in August 2020

https://findajob.agu.org/job/8011719/graduate-student-opportunities-in-geosciences/

关闭

地 址:北京大学廖凯原楼5层 511

邮 编:100871

电 话:010-62752344

传 真:010-62752344

邮 箱:pkuocean@pku.edu.cn

版权所有 © 北京大学海洋研究院  © Copyright by ocean.pku.edu.cn @2017, All Rights Reserved.