{"id":16694,"date":"2014-09-23T20:07:51","date_gmt":"2014-09-23T20:07:51","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=16694"},"modified":"2014-09-30T21:46:16","modified_gmt":"2014-09-30T21:46:16","slug":"strong-early-season-storm-in-the-north-pacific","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/16694","title":{"rendered":"Strong early-season storm in the North Pacific"},"content":{"rendered":"
\"GOES-15<\/a>

GOES-15 6.5 \u00b5m IR channel images (click to play animation)<\/p><\/div>\n

The GOES-15 6.5 \u00b5m water vapor channel imagery above showed the development and evolution of a strong mid-latitude cyclone in the eastern North Pacific Basin during the 21-23 September 2014 time period; of particular interest was the development of strong subsidence behind the storm (depicted by brighter shades of yellow), and also a second jet starting to approach the storm from the west (as evidenced by increasing cold cloud tops in the base of the trough at the end of the animation). A closer view of the storm using AWIPS II imagery is available here<\/a>. The strong storm had access to abundant sub-tropical moisture, as depicted in the MIMIC Total Precipitable Water<\/a> animation below.<\/p>\n

\"MIMIC<\/a>

MIMIC Total Precipitable Water (click to enlarge)<\/p><\/div>\n

The ASCAT Scatterometer that flies on METOP gives routine observations of surface winds over the ocean. A large area of storm-force winds (in red) was depicted in the image below (from 0630 UTC on 23 September), overlain on the GOES-15 Water Vapor imagery.<\/p>\n

\"<\/a>

GOES-15 6.5 \u00b5m water vapor channel image and ASCAT winds, 0630 UTC on 23 September (click to enlarge)<\/p><\/div>\n

A comparison of 4-km resolution GOES-15 6.5 \u00b5m and 1-km resolution Aqua MODIS 6.7 \u00b5m water vapor channel images at 11:30 UTC, below, demonstrated the benefit of higher spatial resolution for providing a more accurate display of the water vapor gradients and various small-scale features (such as transverse banding associated with cold clouds to the north of the storm), along with the polar-orbiter image elimination of geostationary parallax<\/a> error for more more precise feature location.<\/p>\n

\"GOES-15<\/a>

GOES-15 6.5 \u00b5m and Aqua MODIS 6.7 \u00b5m water vapor channel images<\/p><\/div>\n

The GOES sounder Total Column Ozone<\/a> product, below, showed an increase in ozone values (350-380 Dobson Units, darker green to lighter green color enhancement) as the tropopause was lowered in the vicinity of the deepening mid-latitude cyclone.<\/p>\n

\"GOES<\/a>

GOES sounder Total Column Ozone product (click to play animation)<\/p><\/div>\n

A Suomi NPP VIIRS true-color image from the SSEC RealEarth<\/a> web map server, below, provided a good view of the lower-level clouds associated with the storm.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS true-color image<\/p><\/div>\n

For a more detailed analysis of this event from the Ocean Prediction Center perspective, see the Satellite Liaison Blog<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

The GOES-15 6.5 \u00b5m water vapor channel imagery above showed the development and evolution of a strong mid-latitude cyclone in the eastern North Pacific Basin during the 21-23 September 2014 time period; of particular interest was the development of strong subsidence behind the storm (depicted by brighter shades of yellow), and also a second jet […]<\/p>\n","protected":false},"author":19,"featured_media":16698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10,15,43,58,12,25,49,48],"tags":[],"class_list":["post-16694","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general-interpretation","category-goes-sounder","category-goes-15","category-metop","category-modis","category-satellite-winds","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/16694","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\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=16694"}],"version-history":[{"count":23,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/16694\/revisions"}],"predecessor-version":[{"id":16756,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/16694\/revisions\/16756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/16698"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=16694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=16694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=16694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}