{"id":52500,"date":"2026-06-17T13:54:30","date_gmt":"2026-06-17T08:24:30","guid":{"rendered":"https:\/\/www.gujaratweather.com\/?p=52500"},"modified":"2026-06-17T14:19:42","modified_gmt":"2026-06-17T08:49:42","slug":"the-kola-relative-oceanic-nino-index-products-based-on-oisst-daily-sst-data","status":"publish","type":"post","link":"https:\/\/www.gujaratweather.com\/?p=52500","title":{"rendered":"The KOLA Relative Oceanic Nino Index Products Based on OISST Daily SST Data"},"content":{"rendered":"

The KOLA Relative Oceanic Nino Index products based on OISST Daily SST Data
\n1. OISST Daily RONI
\n2. OISST Weekly RONI every Wednesday
\n3. OISST Weekly RONI every Sunday
\n4. OISST Monthly RONI for completed Months
\n5. OISST Current Month mean RONI<\/p>\n

Date: 16-06-2026<\/p>\n

The Relative Oceanic Ni\u00f1o Index (RONI) is defined as the three month running average of the monthly relative Ni\u00f1o 3.4 anomaly. Historical El Ni\u00f1o and La Ni\u00f1a events will be categorized based on this index, specifically when there are five or more consecutive, overlapping three-month seasons where the RONI is greater than 0.5C (El Ni\u00f1o) or less than -0.5C (La Ni\u00f1a).
\nRONI is calculated using the ERSST.v5 monthly data.<\/p>\n

This proposed change will have two primary benefits for ENSO monitoring and prediction: 1) the relative sea surface temperature index better identifies current and past El Ni\u00f1o and La Ni\u00f1a events because it is less sensitive to the chosen base climatology period. This allows for comparison of events across the lengthy climate record.<\/p>\n

KOLA has developed various plots listed above for preliminary monitoring of the upcoming El Nino episode from OISST Daily Data. The same is available in the Menu at this link RONI Graphs<\/a><\/p>\n

OISST \u0aa6\u0ac8\u0aa8\u0abf\u0a95 SST \u0aa1\u0ac7\u0a9f\u0abe \u0a86\u0aa7\u0abe\u0ab0\u0abf\u0aa4 KOLA Relative Oceanic Nino Index (RONI) \u0aaa\u0acd\u0ab0\u0acb\u0aa1\u0a95\u0acd\u0a9f\u0acd\u0ab8<\/strong><\/p>\n

    \n
  1. OISST \u0aa6\u0ac8\u0aa8\u0abf\u0a95 RONI<\/li>\n
  2. OISST \u0ab8\u0abe\u0aaa\u0acd\u0aa4\u0abe\u0ab9\u0abf\u0a95 RONI (\u0aa6\u0ab0 \u0aac\u0ac1\u0aa7\u0ab5\u0abe\u0ab0\u0ac7)<\/li>\n
  3. OISST \u0ab8\u0abe\u0aaa\u0acd\u0aa4\u0abe\u0ab9\u0abf\u0a95 RONI (\u0aa6\u0ab0 \u0ab0\u0ab5\u0abf\u0ab5\u0abe\u0ab0\u0ac7)<\/li>\n
  4. \u0aaa\u0ac2\u0ab0\u0acd\u0aa3 \u0aa5\u0aaf\u0ac7\u0ab2\u0abe \u0aae\u0ab9\u0abf\u0aa8\u0abe\u0a93 \u0aae\u0abe\u0a9f\u0ac7 OISST \u0aae\u0abe\u0ab8\u0abf\u0a95 RONI<\/li>\n
  5. OISST \u0a9a\u0abe\u0ab2\u0ac1 \u0aae\u0ab9\u0abf\u0aa8\u0abe\u0aa8\u0acb \u0ab8\u0ab0\u0ac7\u0ab0\u0abe\u0ab6 RONI<\/li>\n<\/ol>\n

    \u0aa4\u0abe\u0ab0\u0ac0\u0a96: 16-06-2026<\/strong><\/p>\n

    Relative Oceanic Ni\u00f1o Index (RONI) \u0aa8\u0ac0 \u0ab5\u0acd\u0aaf\u0abe\u0a96\u0acd\u0aaf\u0abe \u0aae\u0abe\u0ab8\u0abf\u0a95 Relative Ni\u00f1o 3.4 Anomaly \u0aa8\u0abe \u0ab8\u0aa4\u0aa4 \u0aa4\u0acd\u0ab0\u0aa3 \u0aae\u0ab9\u0abf\u0aa8\u0abe\u0aa8\u0abe \u0a9a\u0abe\u0ab2\u0aa4\u0abe \u0ab8\u0ab0\u0ac7\u0ab0\u0abe\u0ab6 (Three-Month Running Average) \u0aa4\u0ab0\u0ac0\u0a95\u0ac7 \u0a95\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0ac7 \u0a9b\u0ac7. \u0a90\u0aa4\u0abf\u0ab9\u0abe\u0ab8\u0abf\u0a95 El Ni\u00f1o \u0a85\u0aa8\u0ac7 La Ni\u00f1a \u0a98\u0a9f\u0aa8\u0abe\u0a93\u0aa8\u0ac1\u0a82 \u0ab5\u0ab0\u0acd\u0a97\u0ac0\u0a95\u0ab0\u0aa3 \u0a86 \u0ab8\u0ac2\u0a9a\u0a95\u0abe\u0a82\u0a95\u0aa8\u0abe \u0a86\u0aa7\u0abe\u0ab0\u0ac7 \u0a95\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0ab6\u0ac7. \u0a96\u0abe\u0ab8 \u0a95\u0ab0\u0ac0\u0aa8\u0ac7, \u0a9c\u0acd\u0aaf\u0abe\u0ab0\u0ac7 \u0ab8\u0aa4\u0aa4 \u0a85\u0aa8\u0ac7 \u0a8f\u0a95\u0aac\u0ac0\u0a9c\u0abe \u0ab8\u0abe\u0aa5\u0ac7 \u0a93\u0ab5\u0ab0\u0ab2\u0ac7\u0aaa \u0aa5\u0aa4\u0ac0 \u0aaa\u0abe\u0a82\u0a9a \u0a85\u0aa5\u0ab5\u0abe \u0aa4\u0ac7\u0aa5\u0ac0 \u0ab5\u0aa7\u0ac1 \u0aa4\u0acd\u0ab0\u0aa3-\u0aae\u0abe\u0ab8\u0ac0\u0aaf \u0a8b\u0aa4\u0ac1\u0a93 \u0aa6\u0ab0\u0aae\u0abf\u0aaf\u0abe\u0aa8 RONI +0.5\u00b0C \u0a95\u0ab0\u0aa4\u0abe\u0a82 \u0ab5\u0aa7\u0ac1 \u0ab9\u0acb\u0aaf \u0aa4\u0acd\u0aaf\u0abe\u0ab0\u0ac7 \u0aa4\u0ac7\u0aa8\u0ac7 El Ni\u00f1o<\/strong>, \u0a85\u0aa8\u0ac7 -0.5\u00b0C \u0a95\u0ab0\u0aa4\u0abe\u0a82 \u0a93\u0a9b\u0ac1\u0a82 \u0ab9\u0acb\u0aaf \u0aa4\u0acd\u0aaf\u0abe\u0ab0\u0ac7 \u0aa4\u0ac7\u0aa8\u0ac7 La Ni\u00f1a<\/strong> \u0aa4\u0ab0\u0ac0\u0a95\u0ac7 \u0a97\u0aa3\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0ab6\u0ac7.<\/p>\n

    RONI \u0aa8\u0ac0 \u0a97\u0aa3\u0aa4\u0ab0\u0ac0 \u0aae\u0abe\u0ab8\u0abf\u0a95 ERSST.v5<\/strong> \u0aa1\u0ac7\u0a9f\u0abe\u0aa8\u0abe \u0a86\u0aa7\u0abe\u0ab0\u0ac7 \u0a95\u0ab0\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0ac7 \u0a9b\u0ac7.<\/p>\n

    ENSO \u0aa8\u0abe \u0aae\u0acb\u0aa8\u0abf\u0a9f\u0ab0\u0abf\u0a82\u0a97 \u0a85\u0aa8\u0ac7 \u0a86\u0a97\u0abe\u0ab9\u0ac0\u0aae\u0abe\u0a82 \u0a86 \u0aaa\u0acd\u0ab0\u0ab8\u0acd\u0aa4\u0abe\u0ab5\u0abf\u0aa4 \u0aab\u0ac7\u0ab0\u0aab\u0abe\u0ab0\u0aa8\u0abe \u0aac\u0ac7 \u0aae\u0ac1\u0a96\u0acd\u0aaf \u0ab2\u0abe\u0aad \u0a9b\u0ac7:<\/p>\n

      \n
    1. Relative Sea Surface Temperature Index \u0ab5\u0ab0\u0acd\u0aa4\u0aae\u0abe\u0aa8 \u0a85\u0aa8\u0ac7 \u0aad\u0ac2\u0aa4\u0a95\u0abe\u0ab3\u0aa8\u0ac0 El Ni\u00f1o \u0aa4\u0aa5\u0abe La Ni\u00f1a \u0a98\u0a9f\u0aa8\u0abe\u0a93\u0aa8\u0ac7 \u0ab5\u0aa7\u0ac1 \u0ab8\u0abe\u0ab0\u0ac0 \u0ab0\u0ac0\u0aa4\u0ac7 \u0a93\u0ab3\u0a96\u0ac7 \u0a9b\u0ac7, \u0a95\u0abe\u0ab0\u0aa3 \u0a95\u0ac7 \u0aa4\u0ac7 \u0aaa\u0ab8\u0a82\u0aa6 \u0a95\u0ab0\u0abe\u0aaf\u0ac7\u0ab2\u0abe \u0a86\u0aa7\u0abe\u0ab0\u0aad\u0ac2\u0aa4 \u0a95\u0acd\u0ab2\u0abe\u0a87\u0aae\u0ac7\u0a9f\u0acb\u0ab2\u0acb\u0a9c\u0ac0 \u0ab8\u0aae\u0aaf\u0a97\u0abe\u0ab3\u0abe\u0aa8\u0ac0 \u0a85\u0ab8\u0ab0 \u0aaa\u0acd\u0ab0\u0aa4\u0acd\u0aaf\u0ac7 \u0a93\u0a9b\u0ac0 \u0ab8\u0a82\u0ab5\u0ac7\u0aa6\u0aa8\u0ab6\u0ac0\u0ab2\u0aa4\u0abe \u0aa7\u0ab0\u0abe\u0ab5\u0ac7 \u0a9b\u0ac7.<\/li>\n
    2. \u0a86\u0aa5\u0ac0 \u0ab2\u0abe\u0a82\u0aac\u0abe \u0a97\u0abe\u0ab3\u0abe\u0aa8\u0abe \u0a86\u0aac\u0acb\u0ab9\u0ab5\u0abe \u0ab0\u0ac7\u0a95\u0acb\u0ab0\u0acd\u0aa1\u0aae\u0abe\u0a82 \u0ab5\u0abf\u0ab5\u0abf\u0aa7 ENSO \u0a98\u0a9f\u0aa8\u0abe\u0a93\u0aa8\u0ac0 \u0ab5\u0aa7\u0ac1 \u0aaf\u0acb\u0a97\u0acd\u0aaf \u0a85\u0aa8\u0ac7 \u0ab8\u0ac0\u0aa7\u0ac0 \u0ab8\u0ab0\u0a96\u0abe\u0aae\u0aa3\u0ac0 \u0ab6\u0a95\u0acd\u0aaf \u0aac\u0aa8\u0ac7 \u0a9b\u0ac7.<\/li>\n<\/ol>\n

      KOLA \u0aa6\u0acd\u0ab5\u0abe\u0ab0\u0abe \u0a89\u0aaa\u0ab0 \u0aa6\u0ab0\u0acd\u0ab6\u0abe\u0ab5\u0ac7\u0ab2\u0abe \u0ab5\u0abf\u0ab5\u0abf\u0aa7 \u0aaa\u0acd\u0ab2\u0acb\u0a9f\u0acd\u0ab8 OISST \u0aa6\u0ac8\u0aa8\u0abf\u0a95 \u0aa1\u0ac7\u0a9f\u0abe\u0aa8\u0abe \u0a86\u0aa7\u0abe\u0ab0\u0ac7 \u0ab5\u0abf\u0a95\u0ab8\u0abe\u0ab5\u0ab5\u0abe\u0aae\u0abe\u0a82 \u0a86\u0ab5\u0acd\u0aaf\u0abe \u0a9b\u0ac7, \u0a9c\u0ac7\u0aa5\u0ac0 \u0a86\u0a97\u0abe\u0aae\u0ac0 El Ni\u00f1o \u0aaa\u0ab0\u0abf\u0ab8\u0acd\u0aa5\u0abf\u0aa4\u0abf\u0aa8\u0abe \u0aaa\u0acd\u0ab0\u0abe\u0aa5\u0aae\u0abf\u0a95 \u0aae\u0acb\u0aa8\u0abf\u0a9f\u0ab0\u0abf\u0a82\u0a97 \u0aae\u0abe\u0a9f\u0ac7 \u0aa4\u0ac7\u0aa8\u0acb \u0a89\u0aaa\u0aaf\u0acb\u0a97 \u0a95\u0ab0\u0ac0 \u0ab6\u0a95\u0abe\u0aaf.<\/p>\n

      Daily RONI based on OISST Daily SST Data<\/strong>
      \n      \"\"<\/a><\/p>\n

      Weekly RONI for Week ending Wednesday based on OISST Dailly Data<\/strong><\/h4>\n

      \"\"<\/a><\/strong><\/h4>\n

      Weekly RONI for Week ending Sunday based on OISST Dailly Data<\/p>\n

      \"\"<\/a><\/h4>\n

      <\/h4>\n

      OISST Based Monthly RONI (Completed Month)<\/strong><\/h4>\n

      \"\"<\/a><\/p>\n

      Current Month Mean RONI Till Date
      \n      \"\"<\/a>
      \n<\/strong><\/h4>\n","protected":false},"excerpt":{"rendered":"

      The KOLA Relative Oceanic Nino Index products based on OISST Daily SST Data 1. OISST Daily RONI 2. OISST Weekly RONI every Wednesday 3. OISST Weekly RONI every Sunday 4. OISST Monthly RONI for completed Months 5. OISST Current Month Read More …<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-52500","post","type-post","status-publish","format-standard","hentry","category-ashok-patel-weather"],"_links":{"self":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/posts\/52500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=52500"}],"version-history":[{"count":7,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/posts\/52500\/revisions"}],"predecessor-version":[{"id":52518,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=\/wp\/v2\/posts\/52500\/revisions\/52518"}],"wp:attachment":[{"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=52500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=52500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gujaratweather.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=52500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}