Friday, 22 November 2013

Super Typhoon Haiyan




Super Typhoon Haiyan (31W) formed as a tropical depression at low latitudes in the West Pacific Ocean on 03 November 2013 — and by 18 UTC on 07 November was estimated to have peaked at an intensity of sustained 170 knot winds with gusts to 205 knots (Storm track map | ADT plot | JTWC warning text). McIDAS images of 15-minute interval 10.8 µm IR channel data from the Korean COMS-1 satellite (above; click image to play animation; a YouTube video is also available) showed the intense tropical cyclone as it moved westward and made landfall in the Philippines on 07 November. There was a large, nearly symmetric ring of very cold cloud-top IR brightness temperatures in the -80 to -90º C range (violet colors) – and at times there were a few isolated pixels colder than -90º C (yellow enhancement). For comparison, a YouTube video of MTSAT-1 10.8 µm IR imagery is also available.

Artinya :

Super Typhoon Haiyan ( 31W ) dibentuk sebagai depresi tropis di lintang rendah di Samudera Pasifik Barat pada 3 November 2013 - dan sebesar 18 UTC pada 07 November ini diperkirakan telah mencapai puncaknya pada intensitas berkelanjutan 170 angin simpul dengan hembusan sampai 205 knot ( badai track peta | petak ADT | text peringatan JTWC ) . McIDAS gambar dari 15 menit Interval channel IR 10,8 pM data dari Korea Com - 1 satelit ( di atas; klik gambar untuk memutar animasi , video YouTube juga tersedia ) menunjukkan siklon tropis intens saat bergerak ke arah barat dan membuat pendaratan di Filipina pada 07 November. Ada besar , cincin hampir simetris awan - top suhu kecerahan IR sangat dingin di -80 sampai -90 kisaran º C ( warna ungu ) - dan kadang-kadang ada piksel terisolasi lebih dingin dari -90 º C ( peningkatan kuning ) . Sebagai perbandingan , video YouTube dari MTSAT - 1 10,8 pM citra IR juga tersedia .

As the eye was still east of the Philippines, a McIDAS-V image comparison of 375-m resolution Suomi NPP VIIRS 0.7 µm Day/Night Band (DNB) and 11.45 µm IR channel data at 16:15 UTC on 07 November (below; courtesy of William Straka, CIMSS) revealed intricate banding structures within the eyewall region on the IR image, as well as bright streaks on the DNB image due to cloud illumination by intense lightning activity.

Artinya :

Sebagai mata masih timur dari Filipina , perbandingan gambar McIDAS - V resolusi 375 - m Suomi NPP VIIRS 0,7 pM Day / Night Band ( DNB ) dan 11,45 channel IR pM data pada 16:15 UTC di 07 November ( di bawah ini; courtesy of William Straka , CIMSS ) mengungkapkan struktur rumit banding dalam wilayah eyewall pada gambar IR , serta garis-garis terang pada gambar DNB karena pencahayaan awan oleh aktivitas petir intens .



The eye and eyewall of Haiyan moved over the eastern Philippine islands of Samar and Leyte (near the city of Tacloban) during the early morning hours, as can be seen in COMS-1 0.675 µm visible channel images (below; click image to play animation; a YouTube video is also available)

Artinya :

Mata dan eyewall dari Haiyan pindah pulau-pulau Filipina timur Samar dan Leyte ( dekat kota Tacloban ) selama jam-jam pagi , seperti dapat dilihat di Com - 1 0,675 pM channel gambar terlihat ( bawah , klik gambar untuk memutar animasi ; video YouTube juga tersedia )





The nearly annular structure of the eyewall at 21:08 UTC on 07 November was revealed on a DMSP SSMIS 85 GHz microwave image (above) from the CIMSS Tropical Cyclones site. In addition, a sequence of eyewall replacement cycles can be seen during the 06-07 November period using the MIMIC-TC product (below). It appears as though Super Typhoon Haiyan was in the process of undergoing another eyewall replacement cycle as it was making landfall in the Philippines.

Artinya :

Struktur hampir annular dari eyewall pada 21:08 UTC di 07 November terungkap pada DMSP SSMIS 85 GHz microwave gambar ( atas) dari situs CIMSS Badai Tropis . Selain itu, urutan siklus penggantian eyewall dapat dilihat selama periode 06-07 November menggunakan produk MIMIC - TC ( bawah ) . Tampaknya seolah-olah super Topan Haiyan sedang dalam proses menjalani siklus penggantian eyewall lain seperti itu melakukan pendaratan di Filipina .

Regarding the size of and very cold cloud-top IR brightness temperatures seen with Super Typhoon Haiyan, the IR images below (courtesy of Rick Kohrs, SSEC) show a side-by-side comparison with Category 5 Hurricane Katrina (Haiyan has been artifically superimposed at the same location over the Gulf of Mexico). Note the significantly colder cloud-top IR brightness temperatures associated with Haiyan (-80 to -89 C, violet colors), due to its location in the tropics (near 10 N latitude) where the tropopause was much higher and much colder.

Artinya :


Mengenai ukuran dan awan - top suhu kecerahan IR sangat dingin terlihat dengan Super Topan Haiyan , gambar IR bawah ( courtesy of Rick Kohrs , SSEC ) menunjukkan sisi - by-side perbandingan dengan Kategori 5 Badai Katrina ( Haiyan telah artifisial ditumpangkan di lokasi yang sama di atas Teluk Meksiko ) . Perhatikan secara signifikan lebih dingin awan - top suhu kecerahan IR terkait dengan Haiyan ( -80 sampai -89 C , warna violet ) , karena lokasinya di daerah tropis (dekat 10 N lintang ) dimana tropopause jauh lebih tinggi dan jauh lebih dingin .


It is interesting to note that during the previous daytime hours (on 06 November), a series of mesovortices could be seen within the eye of Haiyan on COMS-1 visible images (below; click image to play animation; a YouTube video is also available). For more discussion on these mesovortices, see the From the Lee Side blog.

Artinya :

Sangat menarik untuk dicatat bahwa selama siang hari sebelumnya ( pada 06 November) , serangkaian mesovortices bisa dilihat dalam mata Haiyan pada Com - 1 gambar terlihat ( bawah , klik gambar untuk memutar animasi , video YouTube juga tersedia ) . Untuk diskusi lebih lanjut tentang mesovortices ini, lihat Dari blog Lee Side .




As pointed out in the Joint Typhoon Warning Center prognostic reasoning bulletin, factors that favored the intensification of Super Typhoon Haiyan included warm sea surface temperatures (above) and low values of deep layer wind shear (below).

Artinya :

Seperti yang ditunjukkan dalam Joint Typhoon Warning Pusat penalaran prognostik buletin , faktor-faktor yang disukai intensifikasi Super Typhoon Haiyan termasuk suhu permukaan laut yang hangat ( di atas ) dan nilai-nilai yang rendah dalam lapisan geser angin ( bawah ) .


11 November Update: A McIDAS-V image comparison of  “before Haiyan” (31 October) and “after Haiyan” (09 November) night-time Suomi NPP VIIRS 0.7 µm Day/Night Band data (below; courtesy of William Straka, SSEC/CIMSS) showed the extent of the power outages in the Tacloban City area and other towns in the northern portion of Leyte province, caused by devastating damage sustained during the landfall of the powerful typhoon.

Artinya :

11 November Update: Perbandingan gambar McIDAS - V " sebelum Haiyan " (31 Oktober) dan " setelah Haiyan " (09 November) malam waktu Suomi NPP VIIRS 0,7 pM Data Day / Night Band ( di bawah ini; milik William Straka , SSEC / CIMSS ) menunjukkan sejauh mana listrik padam di wilayah Tacloban Kota dan kota-kota lain di bagian utara provinsi Leyte , disebabkan oleh kerusakan dahsyat berkelanjutan selama pendaratan dari topan kuat .


21 November update: Rick Kohrs (SSEC) created a large (72 megabyte) animation of hourly MTSAT-1 6.75 µm water vapor channel imagery — covering the life span of Haiyan during the 03-11 November period — superimposed on a Sea Surface Temperature background (below; click image to play animation; a YouTube video is also available).

Artinya :

21 November diperbaharui: Rick Kohrs ( SSEC ) menciptakan besar ( 72 megabyte ) animasi jam MTSAT - 1 6,75 pM uap air saluran citra - meliputi masa hidup Haiyan selama periode 03-11 November - ditumpangkan pada Sea Surface Temperature latar belakang ( di bawah ini; klik gambar untuk memutar animasi , video YouTube juga tersedia ) .



Mohon Maaf Atas Kekurangan dan Kesalahan Jika Dalam Terjemahan Post Ini.


Posted in COMS, DMSP, McIDAS-V, MTSAT, Suomi NPP, Tropical cyclones, VIIRS

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