时间:2025-09-16 15:00:09 来源:网络整理编辑:百科
The western Pacific Ocean had been building up heat for a record 200 days without the churning from
The western Pacific Ocean had been building up heat for a record 200 days without the churning from a single typhoon. The ocean basin that spawns the strongest storms on Earth had been oddly quiet, but it's making up for its slumber in a big way with Super Typhoon Nepartak.
This storm, which had maximum sustained winds of 175 miles per hour as of Wednesday afternoon, is a beast.
SEE ALSO:Beastly Category 5 Super Typhoon Nepartak is headed right for TaiwanAt that time, it was as close to a textbook case of an intense typhoon as one typically sees in any season, or even multiple seasons, and it illustrates how these storms grow and sustain themselves by feasting on the energy drawn from a deep reservoir of warm ocean waters.
Via GiphyBased on satellite imagery, Super Typhoon Nepartak has struck many meteorologists as a near-perfect storm, to use the cliche phrase.
"There is a visual symmetry factor that goes into what makes a tropical cyclone appear as what we might call "perfect,"" said Anthony Sagliani, a meteorologist at Earth Networks in Maryland. "A small round eye in the center of the storm surrounded by a ring of massive, deep convection. Certainly Nepartak has that look. But to maintain that look the storm actually needs several parameters to coincide for several days," he said.
Tweet may have been deleted
Hurricanes and typhoons (these are the same type of storms, but located in different parts of the world and called different things) are essentially giant heat engines, powered by the latent heat release from evaporating warmth and moisture from mild ocean waters as well as humid air masses.
Warm waters are present in abundance in the northwest Pacific Ocean at this point. Water temperatures in the Philippine Sea are above 86 degrees Fahrenheit, or 30 degrees Celsius.
"This is partly because the region had previously been untouched by a tropical cyclone for a record length of time," Sagliani said.
Tweet may have been deleted
"Another parameter a storm like this needs in place is very low wind shear. From the get-go, Nepartak has been impacted by no more than 6-12 mph shear. Its convective towers have no problem sustaining themselves in that environment," Sagliani said in a Twitter message.
"Nepartak has a massive set of lungs"
The warm waters plus low shear helped the storm catapult from Category 1 to Category 5 intensity within a 24-hour period. "The upper-level conditions were perfect for rapid/explosive intensification," said Ryan Maue, a meteorologist for the private weather firm WeatherBell Analytics, in an email.
"Ocean heat content is anomalously high along the track of Nepartak as well, likely contributing to the extreme intensification rates," Maue said.
The heat goes into fueling massive thunderstorms that are tightly packed around the center of the storm, in an area known as the central dense overcast, or CDO.
Via GiphyThrough Wednesday morning eastern time, such a feature was readily apparent with Super Typhoon Nepartak. At the center of the CDO is the storm's eye, where the air is descending and the air pressure is the lowest. Nepartak features a relatively small eye, but that could change over time.
The storm has also taken on the appearance of a so-called "annular" tropical cyclone, with an absence of multiple spiral bands and the presence of a large, dense area of thunderstorms extending well out from the storm's center.
Also evident with this storm is its extraordinary "outflow channels" of air at upper levels of the atmosphere.
According to Sagliani, the healthy outflow from this storm has been particularly noteworthy.
"I think what impresses me the most about Nepartak, is its ability to breathe. Nepartak has a massive set of lungs, with dual outflow channels stretching both poleward and equatorward through almost 30 degrees of latitude from northern edge to southern edge," he said.
Essentially, at upper levels of the atmosphere, there is an area of high pressure flowing counterclockwise, evacuating air from the storm.
Tropical cyclones lift a huge volume of air into the upper levels of the atmosphere, where the air cools and dries. It is therefore necessary for this air to be evacuated from the storm for hundreds to more than 1,000 miles away from the storm's center.
Tweet may have been deleted
Reconnaisance aircraft are not flying into this storm as is the case for storms in the Gulf of Mexico and Atlantic Ocean, so we don't know exactly what the storm's intensity and minimum central air pressure is. The intensity most likely peaked on Wednesday morning eastern time, likely to be disrupted by internal dynamics prior to its arrival in Taiwan.
Meanwhile, meteorologists are using multiple methods using satellite imagery in order to estimate the storm's strength.
"Its near-perfect visual display should be taken as a warning like the gorgeous colors and intricate patterns we see on venomous snakes and fish," Sagliani said.
"While beautiful from the comfort of our computer screens, [it] is a real, life-threatening typhoon that should be met with utmost concern and preparation by those in its path."
Typhoon Nepartak is forecast to make landfall along the eastern coast of Taiwan on July 8 or 9 as a Category 4 or 5 storm, capable of causing extensive damage.
'Rocket League' Championship Series Season 2 offers $250,000 prize pool2025-09-16 14:46
武磊全記錄:半場即被換下 沒有射門被對方鎖死2025-09-16 14:42
滄州雄獅新賽季名單:米哈伊洛維奇+奧斯卡聯手鋒線2025-09-16 14:19
趙麗娜曬照慶祝母親節 :希望有更多時間陪您2025-09-16 14:16
Two states took big steps this week to get rid of the tampon tax2025-09-16 13:42
瓜帥:曼城請我時從未說過拿歐冠 我們完成了目標2025-09-16 13:37
又整活!球迷規勸C羅另尋佳處 CR7姐姐為其點讚2025-09-16 13:19
德爾加多的身份位置都很尷尬 外租或許是一條出路2025-09-16 13:04
Samsung Galaxy Note7 teardown reveals the magic behind the phone's iris scanner2025-09-16 13:02
新賽季中超仍力爭5月底開賽 主辦方各種渠道遊說個別城市2025-09-16 12:47
Mall builds real2025-09-16 13:43
又整活 !球迷規勸C羅另尋佳處 CR7姐姐為其點讚2025-09-16 13:22
成都蓉城官方:萊昂納多等3人離隊 胡勇發等14名球員外租2025-09-16 13:17
西蒙尼:對克洛普不甚了解 而我欽佩安切洛蒂為人2025-09-16 13:11
Watch MTV's Video Music Awards 2016 livestream2025-09-16 13:09
郭田雨:維澤拉想讓我留下 但去哪不是我說了算2025-09-16 13:08
博格巴五下家難定:巴黎尤文情兩難 皇馬巴薩替誰2025-09-16 13:01
詹俊 :哈蘭德+曼城僅有一隊尚可抵擋 姆巴佩+皇馬2025-09-16 12:59
J.K. Rowling makes 'Harry Potter' joke about Olympics event2025-09-16 12:51
定了 !曝曼城本周官宣哈蘭德 解約金接近6000萬歐2025-09-16 12:29