{"id":370694,"date":"2026-03-18T09:53:45","date_gmt":"2026-03-18T08:53:45","guid":{"rendered":"https:\/\/zakrasnejsivimperk.cz\/?p=370694"},"modified":"2026-03-18T09:53:45","modified_gmt":"2026-03-18T08:53:45","slug":"aktuality-cesti-vedci-overili-presnost-sledovani-blesku-z-druzic-meteosat","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=370694","title":{"rendered":"AKTUALITY: \u010ce\u0161t\u00ed v\u011bdci ov\u011b\u0159ili p\u0159esnost sledov\u00e1n\u00ed blesk\u016f z dru\u017eic Meteosat"},"content":{"rendered":"
Evropa z\u00edsk\u00e1v\u00e1 poprv\u00e9 v historii mo\u017enost nep\u0159etr\u017eit\u011b monitorovat aktivitu blesk\u016f z ob\u011b\u017en\u00e9 dr\u00e1hy. Vd\u011b\u010d\u00ed za to syst\u00e9mu dru\u017eic Meteosat t\u0159et\u00ed generace. Prvn\u00ed v\u011bdeck\u00e9 ov\u011b\u0159en\u00ed kvality sledov\u00e1n\u00ed blesk\u016f z vesm\u00edru provedli \u010de\u0161t\u00ed v\u011bdci z \u00dastavu fyziky atmosf\u00e9ry Akademie v\u011bd \u010cR, kte\u0159\u00ed potvrdili vysokou p\u0159esnost nov\u00e9ho kl\u00ed\u010dov\u00e9ho p\u0159\u00edstroje Lightning Imager. Tento technologick\u00fd n\u00e1stroj, jen\u017e dosud vyu\u017e\u00edvaly pouze americk\u00e9 a \u010d\u00ednsk\u00e9 dru\u017eicov\u00e9 syst\u00e9my, z\u00e1sadn\u011b ovlivn\u00ed bezpe\u010dnost leteck\u00e9 dopravy i p\u0159esnost kr\u00e1tkodob\u00fdch p\u0159edpov\u011bd\u00ed nebezpe\u010dn\u00fdch bou\u0159\u00ed v Evrop\u011b.<\/h6>\n

\"\"Dosavadn\u00ed sledov\u00e1n\u00ed blesk\u016f nad Evropou, Afrikou a Atlantsk\u00fdm oce\u00e1nem bylo z\u00e1visl\u00e9 prim\u00e1rn\u011b na pozemn\u00edch m\u011b\u0159ic\u00edch stanic\u00edch. Ty jsou sice velmi p\u0159esn\u00e9, ale jejich dosah je omezen hustotou instalovan\u00fdch senzor\u016f, co\u017e vytv\u00e1\u0159\u00ed \u201eslep\u00e1 m\u00edsta\u201c zejm\u00e9na nad oce\u00e1ny a v odlehl\u00fdch oblastech. T\u0159et\u00ed generace dru\u017eice Meteosat vyvinut\u00e1 organizac\u00ed EUMETSAT, kter\u00e1 v Evrop\u011b provozuje syst\u00e9m meteorologick\u00fdch dru\u017eic, a Evropskou kosmickou agenturou (ESA) tento deficit zapl\u0148uje a p\u0159in\u00e1\u0161\u00ed glob\u00e1ln\u00ed pohled s nev\u00eddan\u00fdm detailem.<\/p>\n

P\u0159\u00edstroj Lightning Imager (LI), kl\u00ed\u010dov\u00fd prvek syst\u00e9mu, tvo\u0159\u00ed \u010dty\u0159i kamery sn\u00edmaj\u00edc\u00ed atmosf\u00e9ru s frekvenc\u00ed 1000 sn\u00edmk\u016f za sekundu. Umo\u017e\u0148uje detekovat kr\u00e1tk\u00e9 optick\u00e9 pulzy bleskov\u00fdch v\u00fdboj\u016f na horn\u00ed hranici obla\u010dnosti jak mezi oblaky a zem\u00ed, tak i mezi oblaky navz\u00e1jem.<\/p>\n

\u201eJedn\u00e1 se o technicky velmi pokro\u010dil\u00fd p\u0159\u00edstroj, pro jeho vyu\u017eit\u00ed v operativn\u00ed meteorologii ale bylo nezbytn\u00e9 ov\u011b\u0159it, nakolik se data z v\u00fd\u0161ky 36 000 kilometr\u016f shoduj\u00ed s realitou na zemi,\u201c<\/em> vysv\u011btluje Vojt\u011bch Bli\u017e\u0148\u00e1k z \u00dastavu fyziky atmosf\u00e9ry Akademie v\u011bd \u010cR. \u201eNa\u0161e anal\u00fdza prok\u00e1zala velk\u00fd potenci\u00e1l p\u0159\u00edstroje pro monitoring bleskov\u00e9 aktivity \u2013 s pozemn\u00edmi s\u00edt\u011bmi vykazoval dobrou shodu jak v prostoru, tak v \u010dase. V\u00fdznamn\u00fdm p\u0159\u00ednosem je zejm\u00e9na stanoven\u00ed vztahu mezi intenzitou sv\u011btla zachycen\u00e9ho dru\u017eic\u00ed a \u0161pi\u010dkov\u00fdm proudem blesku, tedy jeho maxim\u00e1ln\u00ed hodnotou. To n\u00e1m poprv\u00e9 umo\u017e\u0148uje p\u0159esn\u011b sledovat bleskovou aktivitu bou\u0159\u00ed i v oblastech, kde zcela chyb\u00ed pozemn\u00ed m\u011b\u0159en\u00ed,\u201c<\/em> \u0159\u00edk\u00e1 v\u011bdec.<\/p>\n

Studie v\u011bdc\u016f z \u00dastavu fyziky atmosf\u00e9ry Akademie v\u011bd se zam\u011b\u0159ila na detailn\u00ed srovn\u00e1n\u00ed dat z dru\u017eice Meteosat t\u0159et\u00ed generace s p\u0159esnou pozemn\u00ed s\u00edt\u00ed Earth Networks Total Lightning Network (ENTLN). V\u00fdzkum prok\u00e1zal, \u017ee p\u0159\u00edstroj Lightning Imager vykazuje ve srovn\u00e1n\u00ed s pozemn\u00edm m\u011b\u0159en\u00edm vy\u0161\u0161\u00ed citlivost detekce v no\u010dn\u00edch hodin\u00e1ch. \u201eV ojedin\u011bl\u00fdch p\u0159\u00edpadech mohou b\u00fdt do t\u011bchto z\u00e1znam\u016f zahrnuty i optick\u00e9 jevy nesouvisej\u00edc\u00ed s bleskovou aktivitou, nap\u0159\u00edklad pr\u016flety jasn\u00fdch meteor\u016f (bolid\u016f) nebo intenzivn\u00ed osv\u011btlen\u00ed velk\u00fdch m\u011bstsk\u00fdch aglomerac\u00ed. B\u011bhem dne je detekce naopak obt\u00ed\u017en\u011bj\u0161\u00ed kv\u016fli vy\u0161\u0161\u00edmu sv\u011bteln\u00e9mu pozad\u00ed zp\u016fsoben\u00e9mu odra\u017een\u00fdm slune\u010dn\u00edm z\u00e1\u0159en\u00edm od oblak\u016f, tak\u017ee \u010d\u00e1st slab\u0161\u00edch v\u00fdboj\u016f nemus\u00ed b\u00fdt zachycena,\u201c<\/em> popisuje autor studie Vojt\u011bch Bli\u017e\u0148\u00e1k.<\/p>\n

Pr\u00e1v\u011b tyto zku\u0161enosti jsou kl\u00ed\u010dov\u00e9 pro dal\u0161\u00ed vylep\u0161ov\u00e1n\u00ed softwaru, kter\u00fd bude data z dru\u017eice zpracov\u00e1vat. \u201eC\u00edlem je, aby byl syst\u00e9m v budoucnu je\u0161t\u011b efektivn\u011bj\u0161\u00ed p\u0159i automatick\u00e9m rozpozn\u00e1v\u00e1n\u00ed a filtrov\u00e1n\u00ed fale\u0161n\u00fdch sign\u00e1l\u016f, a meteorolog\u016fm tak poskytoval co nejspolehliv\u011bj\u0161\u00ed data o bou\u0159kov\u00e9 aktivit\u011b,\u201c<\/em> \u0159\u00edk\u00e1 Vojt\u011bch Bli\u017e\u0148\u00e1k z \u00dastavu fyziky atmosf\u00e9ry Akademie v\u011bd.<\/p>\n

Nov\u00e1 generace dru\u017eic Meteosat je podle \u010desk\u00fdch v\u011bdc\u016f d\u016fle\u017eit\u00fdm n\u00e1strojem v z\u00e1kladn\u00edm i aplikovan\u00e9m v\u00fdzkumu. Data o aktivit\u011b blesk\u016f v re\u00e1ln\u00e9m \u010dase jsou nezbytn\u00e1 p\u0159edev\u0161\u00edm pro tzv. nowcasting \u2013 tedy velmi kr\u00e1tkodobou p\u0159edpov\u011b\u010f extr\u00e9mn\u00edch projev\u016f po\u010das\u00ed, jako jsou krupobit\u00ed nebo p\u0159\u00edvalov\u00e9 sr\u00e1\u017eky.<\/p>\n

(tz-av\u010dr)<\/strong><\/p>\n

\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Evropa z\u00edsk\u00e1v\u00e1 <\/p>\n","protected":false},"author":2,"featured_media":370695,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[179],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2026\/03\/18\/nove-av.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/370694"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=370694"}],"version-history":[{"count":1,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/370694\/revisions"}],"predecessor-version":[{"id":370696,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/370694\/revisions\/370696"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/370695"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=370694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=370694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=370694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}