Development of a prototype real-time sting-jet precursor tool for forecasters

Damaging surface winds in some European storms have been attributed to descending mesoscale airstreams termed sting jets. The development of a prototype real-time tool that Met Office forecasters can use to identify favourable conditions for sting jet occurrence in extratropical cyclones is presented. The motivation is to improve national severe weather warnings. We have previously developed a convective-instability-based tool to identify sting-jet precursors for research purposes and applied it to storms in reanalyses and climate models with insufficient spatial resolution to represent sting jets. Here we describe the challenges of applying this research-derived diagnostic to output from an operational forecast system and demonstrate its usefulness for a recent winter storm. Through close collaboration with the researchers and forecasters from the Met Office, the diagnostic has been adapted to work on output from the Met Office’s operational global ensemble forecasts as it becomes available. Since autumn 2019, forecasters have been able to view graphical output informing them whether storms impacting the UK and Europe (up to seven days in the future) have the precursor. The tool has already proven useful in informing guidance for severe weather warnings, including those issued by the Met Office's impact-based National Severe Weather Warning Service that goes out to seven days ahead and is the primary hazardous weather warning service for the public and emergency responders

The Grizzly, February 22, 2000

Black History Celebrated Across Ursinus Campus • Greeks Fall Under Scrutiny • Arts Program to Expand at UC • Nobel Laureate Lecture Draws Positive Student Response • Littleton, Letterman and the South Carolina Primary • After South Carolina: Can McCain be the Man for the GOP? • Pledging Debate Continues: The Problem of Hazing • Pat McGee: Pseudo DMB? • Valentine\u27s Day Blues • Tumbling and Dancing with Words • Music Review: Dr. John • Glah, Druckenmiller Shine at CC Swimming Championships • UC Wrestling Falls Short in Centennial Championships • UC Spring Sports Preview • Gymnastics Trounces School Record at Marranca Invitational • Men\u27s Basketball Ends Stellar Season • Sports Profile: Christopher Ciuncihttps://digitalcommons.ursinus.edu/grizzlynews/1460/thumbnail.jp

The Grizzly, October 12, 1999

Homecoming \u2799: Any Questions? • One America • Ursinus Grads Leave with a Diploma and a Low Financial Debt • Students Celebrate Berman Museum\u27s 10th Anniversary • Old Men\u27s at Heart of Ursinus • Opinion: Lott\u27s Lack of Responsibility is a Major Threat to the Security of the World; The Destruction of Chechnya, NATO\u27s Bloody Legacy • WVOU Offers Promising Shows That Could Even Provide Thought • Jeffrey Gaines Jams Again at UC • Field Hockey Downed in Fairfield • Bears Senior Cornerback Dealt Leg Injury; Looks to Return • UC Tackles Johns Hopkins 20-18 • Volleyball Splits Home Matcheshttps://digitalcommons.ursinus.edu/grizzlynews/1448/thumbnail.jp

The Grizzly, September 28, 1999

Cheer on UC at Family Day! • Taking to the Ballots • Change in Ursinus Security: Good or Bad? • Family Day Has Arrived • Living Off Campus Just Like Home • Campus Unable to Check Messages on Voice Mail • Bon Appetite at Back Porch Cafe • Letter to the Editor: Censorship in the Grizzly • Editors\u27 Response to Censorship Allegations • Volleyball Continues its Winning Ways • A Weekend of Success in U.C. Field Hockey • Bears Football Suffers 1st Loss of Season to #1 W. Marylandhttps://digitalcommons.ursinus.edu/grizzlynews/1446/thumbnail.jp

The Grizzly, September 14, 1999

Tragic Loss for Ursinus College • A Computer Makeover • Summer Research Experience • Freshman Orientation: Breaking in the Baby Bears • Car Owners Beware: Vehicle Cloning Criminals Multiplying to Collegeville Area • Ursinus Chapter of Best Buddies Begins Second Year • Life in Collegeville: Still Just a Rat in a Cage • Career Services Gets Connected • Opinion: Creationism is a Religious Doctrine, not a Viable Science ; What is and What Never Should be: The Rise and Fall of MTV\u27s Social Relevance • This is a Story of Obesity, Sexual Ambiguity, Self-Delusion and Madness • UC Gridders Grab First Win Over Leb Val • UC Field Hockey Under New Management • 80th Season of Bears Field Hockey Beginshttps://digitalcommons.ursinus.edu/grizzlynews/1444/thumbnail.jp

The Grizzly, October 19, 1999

Homecoming 1999 Hit Ursinus This Past Weekend • Handicap Accessibility On Ursinus College Campus • Adding to the Arts Program? • Reimert: A Suite Housing Experience • Baked to Perfection at Brew Moon • Opinion: Don\u27t They Have Anything Better to do?; Letters to the Editors; Guns Don\u27t Kill People, People Kill People • Modernized Version of Antigone High in Energy, Mediocre in Quality • Bears Fight off Gettysburg Bullets Gridiron • Hockey Battles with Holy Cross and Davis & Elkins; A Close Call and a Win • Two Near Misses for Men\u27s Soccer • Bishop Takes Top Honors at Moravianhttps://digitalcommons.ursinus.edu/grizzlynews/1449/thumbnail.jp

The Met Office Unified Model Global Atmosphere 6.0/6.1 and JULES Global Land 6.0/6.1 configurations

We describe Global Atmosphere 6.0 and Global Land 6.0: the latest science configurations of the Met Office Unified Model and JULES land surface model developed for use across all timescales. Global Atmosphere 6.0 includes the ENDGame dynamical core, which significantly increases mid-latitude variability improving a known model bias. Alongside developments of the model’s physical parametrisations, ENDGame also increases variability in the tropics, which leads to an improved representation of tropical cyclones and other tropical phenomena. Further developments of the atmospheric and land surface parametrisations improve other aspects of model performance, including the forecasting of surface weather phenomena. We also describe Global Atmosphere 6.1 and Global Land 6.1, which include a small number of long-standing differences from our main trunk configurations that we continue to require for operational global weather prediction. Since July 2014, GA6.1/GL6.1 has been used by the Met Office for operational global NWP, whilst GA6.0/GL6.0 was implemented in its remaining global prediction systems over the following year