{"id":31248,"date":"2019-01-02T23:59:29","date_gmt":"2019-01-02T23:59:29","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=31248"},"modified":"2019-01-03T20:15:31","modified_gmt":"2019-01-03T20:15:31","slug":"strong-jet-stream-over-the-north-pacific-ocean","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/31248","title":{"rendered":"Strong jet stream over the North Pacific Ocean"},"content":{"rendered":"
\"GOES-17<\/a>

GOES-17 Mid-level Water Vapor (6.9 \u00b5m)<\/em> images, with 250 hPa wind isotachs [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>\n

* GOES-17 images shown here are preliminary and non-operational *<\/em><\/p>\n

GOES-17 Mid-level Water Vapor (6.9 \u00b5m<\/strong><\/a>) images with an overlay of 250 hPa wind isotachs from the GFS90 model (above)<\/strong><\/em> showed a string of disturbances (surface analysis<\/strong><\/a>) along the axis of a 180-knot “Japan Jet” across the North Pacific Ocean on 02 January 2019.<\/p>\n

GOES-17 Split Ozone<\/strong><\/a> (9.6 \u00b5m<\/strong><\/a> – 10.3 \u00b5m<\/a><\/strong>) Brightness Temperature Difference images (below)<\/strong><\/em> include an overlay of PV1.5 pressure (an indicator of the height of the “dynamic tropopause”) — they showed the difference between cold polar air having a low tropopause (shades of cyan to blue)<\/em> north of the jet stream and warm tropical air having a much higher tropopause (shades of yellow)<\/em>. The Split Ozone BTD is the Green component of the Air Mass Red-Green-Blue (RGB) product.<\/p>\n

\"GOES-17<\/a>

GOES-17 Split Ozone (9.6 – 10.3 \u00b5m)<\/em> images, with contours of PV1.5 pressure [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>Rawinsonde data<\/strong><\/a> also showed the significant difference in tropopause height between St. Paul Island, Alaska (pressure=314 hPa, height=8.1 km)<\/em> in the polar air of the Bering Sea and Lihue, Hawai’i (pressure=82 hPa, height=17.9 km)<\/em> in the tropical air of the central Pacific (below)<\/strong><\/em>.<\/p>\n

\"Plots<\/a>

Plots of rawinsonde data from St. Paul Island, Alaska [click to enlarge]<\/p><\/div>

\"Plots<\/a>

Plots of rawinsonde data from Lihue, Hawai’i [click to enlarge]<\/p><\/div>GOES-17 Air Mass RGB<\/strong><\/a> images from the UW-AOS<\/strong><\/a> site (below)<\/strong><\/em> further illustrated the sharp contrast between the cold\/dry polar air to the north and warm\/moist tropical air to the south of the strong jet stream. The purple hues along the northwestern edge of the scan are a result of the “limb cooling” effect, as the satellite’s infrared detectors sense radiation from colder upper levels of the atmosphere at large viewing angles.<\/p>\n

\"GOES-17<\/a>

GOES-17 Air Mass RGB images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>In addition to the series of larger disturbances along the jet stream axis, there were also some smaller-scale storms apparent in the Bering Sea (surface analyses<\/strong><\/a>). Better detail of these high-latitude features could be seen using Suomi NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images separated by 10 hours (below)<\/strong><\/em>.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images at 1427 UTC and 0022 UTC [click to enlarge]<\/p><\/div>Regarding the strong Japan Jet, GOES-15 (GOES-West)<\/em> Derived Motion Winds (source<\/strong><\/a>) tracked targets having velocities as high as 200 knots at 03 UTC<\/strong><\/a> (below)<\/strong><\/em>.<\/p>\n

\"GOES-15<\/a>

GOES-15 Water Vapor (6.5 \u00b5m)<\/em> Derived Motion Winds [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

* GOES-17 images shown here are preliminary and non-operational * GOES-17 Mid-level Water Vapor (6.9 \u00b5m) images with an overlay of 250 hPa wind isotachs from the GFS90 model (above) showed a string of disturbances (surface analysis) along the axis of a 180-knot “Japan Jet” across the North Pacific Ocean on 02 January 2019. GOES-17 […]<\/p>\n","protected":false},"author":18,"featured_media":31250,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43,80,45,25,49,48],"tags":[],"class_list":["post-31248","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-15","category-goes-17","category-redgreenblue-rgb-images","category-satellite-winds","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=31248"}],"version-history":[{"count":11,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31248\/revisions"}],"predecessor-version":[{"id":31260,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31248\/revisions\/31260"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/31250"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=31248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=31248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=31248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}