レーダー気象学が専門(PhD)。レーダー観測手法の他、雹や雷、突風の研究をしています。オクラホマ大学滞在中→帰国。 Twitterには気象現象の情報収集、研究のモチベーション維持の効果を期待。※全て個人活動であり所属組織による業務上の位置づけはありません
Norman, OK
Joined June 2021
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この高度では過冷却水による着氷は限定的と思われ、仮にエンジンに高濃度氷晶が取り込まれて生じる Ice Cystal Icing が原因だとすると、S-bandレーダーで高濃度氷晶をエコーとして十分に捉えるのは難しいのではないか。
高濃度氷晶の監視技術の必要性を再認識した。
flightsafety.org/wp-content/…
観測屋 retweeted
‼️DEVELOPING: RADAR SHOWS JET FLEW INTO A STORM CORE AT 35,000 FEET
Analysis of Miami NEXRAD radar shows the Learjet 60 (N722BD) entered a thunderstorm core near Wellington at about 12:48 PM ET, just before it crashed in Palm Beach County.
At 35,000 feet, radar echoes around the jet jumped to 34 dBZ, with a 52 dBZ core below it and storm tops near 47,000 feet. Tracking data shows the jet climbed about 450 feet inside the core, then went into a spiraling dive and crashed 76 seconds later.
Minutes earlier, the crew told Miami Center they were in moderate turbulence and “managing the ice” at −53°F, and asked to climb out of the precipitation. Moments later they declared a Mayday, reported an overspeed, and said they were banking 60 degrees.
All 9 people on board did not make it. The NTSB is investigating, and the cause has not been determined.
観測屋 retweeted
We're saddened to hear about the tragedy involving a Learjet 60 near West Palm Beach, Florida on Sunday evening, November 1. Weather was likely a contributing factor; while the NTSB has a long investigation ahead, here's what the meteorological and flight tracking data tell us:
観測屋 retweeted
気象庁 千葉豪雨は「スコールライン型」の積乱雲が停滞か
news.web.nhk/newsweb/na/nd-2… #nhk_news
観測屋 retweeted
【NHKニュース速報】
レベル５特別警報［大雨］ 福井県 福井市 大野市 勝山市 特別警報発表 最大級の警戒 命を守る行動を(04:32)
#nhk_news news.web.nhk/newsweb
観測屋 retweeted
2025年9月の静岡の竜巻は「多重渦竜巻」か 気象庁が報告書公表
news.web.nhk/newsweb/na/nd-2… #nhk_news
観測屋 retweeted
富山県東部 線状降水帯発生のおそれ 直前予測を発表
news.web.nhk/newsweb/na/nd-2… #nhk_news
観測屋 retweeted
石川 富山にレベル5大雨特別警報 最大級の警戒を
news.web.nhk/newsweb/na/nd-2… #nhk_news
観測屋 retweeted
【クマ撃退スプレー 性能に大きな差】
12製品について噴射テストを行ったところ、推奨要件の7.5メートル以上を下回った製品が8つありました
詳しくは↓
news.web.nhk/newsweb/na/nd-2…
観測屋 retweeted
BREAKING: Destructive, strong tornado in France! An incredible supercell tornado occurred in the department of Aude, France around 4:25-4:30 p.m. local time Monday.
It touched down near/northwest of Limoux and moved east toward the city. It was associated with a rotating supercell thunderstorm that formed ahead of a messier storm complex/clusters. It propagated eastward, likely gobbling up extra low-level spin north of the Pyrenees Mountains.
It was very likely a significant (EF2+) tornado, and may have caused EF3 damage. Winds probably exceeded 150 mph (240 km/h). Complete destruction of some homes has occurred.
DERNIÈRE MINUTE : Tornade forte et destructive en France ! Une incroyable tornade de supercellule s’est produite dans le département de l’Aude, en France, vers 16 h 25-16 h 30 heure locale lundi.
Elle a touché le sol près/au nord-ouest de Limoux et s’est déplacée vers l’est en direction de la ville. Elle était associée à un orage supercellulaire en rotation qui s’est formé en avant d’un complexe/amas orageux plus désorganisé. Elle s’est propagée vers l’est, absorbant probablement un surplus de rotation de bas niveau au nord des Pyrénées.
Il s’agissait très probablement d’une tornade significative (EF2+), et elle a peut-être causé des dommages de type EF3. Les vents ont probablement dépassé 150 mph (240 km/h). La destruction complète de certaines maisons a eu lieu.
Le monstre de l’Aude. L’entonnoir de la tornade qui frappe le département est remarquable. Si vous accélérez l’image, on découvre la rotation notable du phénomène en cours sous un orage violent. Vidéo de Denis Maréchal (Facebook) @BFMTV
観測屋 retweeted
At 2:27 pm, Oklahoma City hit a record-demolishing 109 degrees. Lawton and Wichita Falls reached 109, as well.
