{"id":46118,"date":"2022-05-05T15:47:19","date_gmt":"2022-05-05T15:47:19","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=46118"},"modified":"2022-05-05T15:47:19","modified_gmt":"2022-05-05T15:47:19","slug":"sar-data-over-hawaii","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/46118","title":{"rendered":"SAR data over Hawai&#8217;i"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATA_GOES17_Band07_Zoomout-20220505_043051_to_043228anim.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1129\" height=\"720\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATA_GOES17_Band07_Zoomout-20220505_043051_to_043228anim.gif\" alt=\"\" class=\"wp-image-46119\" \/><\/a><figcaption>Sentinel-1 SAR data around 0430 UTC overlain on top of GOES-17 ABI Shortwave IR (3.9 \u00b5m) at 0430 UTC on 5 May 2022 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>This <a href=\"https:\/\/www.star.nesdis.noaa.gov\/socd\/mecb\/sar\/AKDEMO_products\/APL_winds\/wind_images_nic\/sarwinds_daily_now.html?date=20220505\">NOAA\/OSPO website<\/a> shows regions where SAR data are available each day.  SAR data can also be imported into AWIPS, as shown in the animation above, which animation has the SAR data overlain on top of GOES-17 Band 7 (Shortwave IR, 3.9 \u00b5m) data.  Note that SAR winds are not valid over the land &#8212; the stronger returns over the islands are instead telling you something about the surface.  (Compare <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATAMaui_BigIslandChannel_Both-20220505_043118.png\">this image<\/a> to a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Hawaii_(island)#\/media\/File:Island_of_Hawai'i_-_Landsat_mosaic.jpg\">Landsat image<\/a> &#8212; there&#8217;s a good correlation!) <\/p>\n\n\n\n<p>A zoomed-in version of the imagery over the ?Alenuih?h? Channel between the Big Island of Hawai&#8217;i and Maui is shown below as a toggle between the 3.9 \u00b5m and the winds.  The significant funneling between the two islands is readily apparent, with winds increasing from about 15 knots northeast of the Big Island to closer to 25 knots within the channel.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1129\" height=\"720\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATAMaui_BigIslandChannel_Both-20220505_043118toggle.gif\" alt=\"\" class=\"wp-image-46120\" \/><figcaption>GOES-17 Band 7 shortwave infrared (3.9 \u00b5m) imagery with SAR winds overlain, 0430\/0431 UTC on 5 May 2022 (click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>A zoom-in over Maui and Molokai, below, details winds around those islands as well, with strong winds between Molokai and Lanai, and an apparent col to the lee of Maui.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATANorthMaui_Both-20220505_043143toggle.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1129\" height=\"720\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATANorthMaui_Both-20220505_043143toggle.gif\" alt=\"\" class=\"wp-image-46123\" \/><\/a><figcaption>GOES-17 Band 7 shortwave infrared (3.9 \u00b5m) imagery with SAR winds overlain, 0430\/0431 UTC on 5 May 2022 (click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Farther north, over the open Pacific to the north of the Hawai&#8217;ian Islands, SAR data shows enhancements in wind underneath structures that are apparent in the Band 7 imagery!<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1129\" height=\"720\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/05\/SARDATAMidPacific_Both-20220505_043143toggle.gif\" alt=\"\" class=\"wp-image-46124\" \/><figcaption>GOES-17 Band 7 shortwave infrared (3.9 \u00b5m) imagery with SAR winds overlain, 0430\/0432 UTC on 5 May 2022 (click to enlarge)<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>This NOAA\/OSPO website shows regions where SAR data are available each day. SAR data can also be imported into AWIPS, as shown in the animation above, which animation has the SAR data overlain on top of GOES-17 Band 7 (Shortwave IR, 3.9 \u00b5m) data. Note that SAR winds are not valid over the land &#8212; [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":46121,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[80,104,25],"tags":[],"class_list":["post-46118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-17","category-sar","category-satellite-winds"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/46118","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=46118"}],"version-history":[{"count":3,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/46118\/revisions"}],"predecessor-version":[{"id":46126,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/46118\/revisions\/46126"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/46121"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=46118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=46118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=46118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}