{"id":3329,"date":"2012-04-12T16:26:44","date_gmt":"2012-04-12T21:26:44","guid":{"rendered":"https:\/\/hwt.nssl.noaa.gov\/ewp\/internal\/blog\/?p=3329"},"modified":"2012-04-12T16:26:44","modified_gmt":"2012-04-12T21:26:44","slug":"lightning-jump-network-range","status":"publish","type":"post","link":"https:\/\/inside.nssl.noaa.gov\/ewp\/2012\/04\/12\/lightning-jump-network-range\/","title":{"rendered":"Lightning Jump: Network Range"},"content":{"rendered":"

Since the LMA networks depend on a line-of-sight for the time-of-arrival detections, distance from the network center is a key aspect to quality control. \u00a0While accuracy of a any VHF detection in the center of the network is around ~10 m, this drops off dramatically with range. \u00a0Flash sorting helps to remove some of this dependency, however, we still want to make sure jumps are not occurring simply because a storm is moving into to the LMA domain.<\/p>\n

Originally, this network range issue was planned to be part of the flash sorting algorithm, but after looking at the data we decided to change it to a strict 150 km range (Fig. 1). \u00a0But I was still seeing an effect of storms entering the network, so I decided to reduce the range again to 125 km (Fig. 2).<\/p>\n

\"Network<\/a>
150 km range maps for WTLMA\/OKLMA\/NALMA\/DCLMA & 125 km range for FLLDAR<\/figcaption><\/figure>\n

We’ve now switched to 125 km for the majority of the networks (100 km for FL). \u00a0This means that if any part of the identified k-means cluster overlaps the region within 125 km of the network center it is eligible for a lightning jump. (And, yes, this does mean that the majority of a cluster can be outside the range, hence why we went a little stricter and confined it to 125 km instead of 150 km).<\/p>\n

The new network range map can be seen below:<\/p>\n

\"\"<\/a>
LMA network ranges of 125 km for WTLMA\/OKLMA\/NALMA\/DCLMA and 100 km for FL-LDAR.<\/figcaption><\/figure>\n

I don’t have the exact location of the OKLMA southwest extension yet, nor is the data feed working in realtime so that is being left out for the moment.<\/p>\n","protected":false},"excerpt":{"rendered":"

Since the LMA networks depend on a line-of-sight for the time-of-arrival detections, distance from the network center is a key aspect to quality control. \u00a0While accuracy of a any VHF… <\/p>\n

Read more \u00bb<\/a><\/p>\n","protected":false},"author":215,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[27],"class_list":["post-3329","post","type-post","status-publish","format-standard","hentry","category-lightning-jump-algorithm","tag-lightning-jump"],"_links":{"self":[{"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/posts\/3329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/users\/215"}],"replies":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/comments?post=3329"}],"version-history":[{"count":0,"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/posts\/3329\/revisions"}],"wp:attachment":[{"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/media?parent=3329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/categories?post=3329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/ewp\/wp-json\/wp\/v2\/tags?post=3329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}