{"id":260005,"date":"2023-06-01T11:59:51","date_gmt":"2023-06-01T09:59:51","guid":{"rendered":"https:\/\/climatescience.press\/?p=260005"},"modified":"2023-06-01T11:59:53","modified_gmt":"2023-06-01T09:59:53","slug":"john-parmentola-estimating-the-holocene-warm-period-termination-tom-nelson-pod-96","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=260005","title":{"rendered":"John Parmentola: Estimating the Holocene Warm Period Termination | Tom Nelson Pod #96"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"406\" data-attachment-id=\"260009\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=260009\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?fit=896%2C503&amp;ssl=1\" data-orig-size=\"896,503\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"0Screenshot-2023-06-01-115821\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?fit=723%2C406&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?resize=723%2C406&#038;ssl=1\" alt=\"\" class=\"wp-image-260009\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?w=896&amp;ssl=1 896w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?resize=300%2C168&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?resize=768%2C431&amp;ssl=1 768w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.youtube.com\/@tomnelson2080\"><img decoding=\"async\" width=\"40\" src=\"https:\/\/yt3.ggpht.com\/VdUj8z4BjtpU4ftJ3uRvBU9wY49bvOXdVnDtvzjP_3hw5HHJtEhpjNdHE3gAuZyxzWSfbeIP=s48-c-k-c0x00ffffff-no-rj\" alt=\"\">Tom Nelson<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"374\" data-attachment-id=\"260007\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=260007\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?fit=1278%2C662&amp;ssl=1\" data-orig-size=\"1278,662\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"0Screenshot-2023-06-01-115716\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?fit=723%2C374&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?resize=723%2C374&#038;ssl=1\" alt=\"\" class=\"wp-image-260007\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?resize=1024%2C530&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?resize=300%2C155&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?resize=768%2C398&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?resize=1200%2C622&amp;ssl=1 1200w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115716.png?w=1278&amp;ssl=1 1278w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">John Parmentola, Ph.D. in Physics, M.I.T. 1977, has built a highly distinguished career over four decades as an entrepreneur, inventor, innovator, a pioneer in the founding of new fields of research, and leader of complex research and development organizations with broad experience in the private sector, academia and high-level positions within the federal government and defense community.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"723\" height=\"407\" src=\"https:\/\/www.youtube.com\/embed\/6c3yW6s0shQ?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en-US&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>John Parmentola, Ph.D. in Physics, M.I.T. 1977, has built a highly distinguished career over four decades as an entrepreneur, inventor, innovator, a pioneer in the founding of new fields of research, and leader of complex research and development organizations with broad experience in the private sector, academia and high-level positions within the federal government and defense community.<\/p>\n","protected":false},"author":121246920,"featured_media":260009,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818056,691818090,691818192,691819876],"class_list":["post-260005","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-climate-change","tag-climate-warning","tag-holocene","tag-warm-period-termination","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-15DD","jetpack-related-posts":[{"id":381971,"url":"https:\/\/climatescience.press\/?p=381971","url_meta":{"origin":260005,"position":0},"title":"New Study: Europe Was \u2018Not Only Warmer But Also Wetter During Most Of The Pre-Industrial Holocene\u2019","author":"uwe.roland.gross","date":"06\/07\/2025","format":false,"excerpt":"Europe is now dryer (and colder) than almost any other period in the last 9000 years.","rel":"","context":"In \"coldest and driest period\"","block_context":{"text":"coldest and driest period","link":"https:\/\/climatescience.press\/?tag=coldest-and-driest-period"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/06\/0Screenshot-2025-06-07-174945.png?fit=1200%2C783&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/06\/0Screenshot-2025-06-07-174945.png?fit=1200%2C783&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/06\/0Screenshot-2025-06-07-174945.png?fit=1200%2C783&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/06\/0Screenshot-2025-06-07-174945.png?fit=1200%2C783&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/06\/0Screenshot-2025-06-07-174945.png?fit=1200%2C783&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":309151,"url":"https:\/\/climatescience.press\/?p=309151","url_meta":{"origin":260005,"position":1},"title":"The Holocene Climatic Optimum and the \u201cpre-industrial\u201d","author":"uwe.roland.gross","date":"03\/16\/2024","format":false,"excerpt":"The \u201cpre-industrial\u201d according to the IPCC in a footnote on page 43 of AR6 WGI is prior to 1750 for radiative forcings and before 1850 for temperature. Both dates are within the period commonly described as the\u00a0Little Ice Age.","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0251A_2.jpg?fit=1200%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0251A_2.jpg?fit=1200%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0251A_2.jpg?fit=1200%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0251A_2.jpg?fit=1200%2C768&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/03\/0251A_2.jpg?fit=1200%2C768&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":330842,"url":"https:\/\/climatescience.press\/?p=330842","url_meta":{"origin":260005,"position":2},"title":"Megafossil Carbon Dating Indicates Sweden Was 2-3\u00b0C Warmer Than Today During The Last Glacial","author":"uwe.roland.gross","date":"06\/01\/2024","format":false,"excerpt":"\u201cIt is increasingly evident that common boreal tree species grew close to this summit in a climate, 2-3\u00b0C warmer than at present, during the Lateglacial and early Holocene periods 16 800- 6000 years ago.\u201d","rel":"","context":"In \"Carbon Dating\"","block_context":{"text":"Carbon Dating","link":"https:\/\/climatescience.press\/?tag=carbon-dating"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/06\/0sweden-areskutan-mountains-lbowy37e6sr8c4vx.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/06\/0sweden-areskutan-mountains-lbowy37e6sr8c4vx.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/06\/0sweden-areskutan-mountains-lbowy37e6sr8c4vx.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/06\/0sweden-areskutan-mountains-lbowy37e6sr8c4vx.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/06\/0sweden-areskutan-mountains-lbowy37e6sr8c4vx.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":362241,"url":"https:\/\/climatescience.press\/?p=362241","url_meta":{"origin":260005,"position":3},"title":"7000 Year Old Trees Uncovered High Up In The\u00a0Rockies","author":"uwe.roland.gross","date":"01\/15\/2025","format":false,"excerpt":"A melting patch of ice in the Rockies is uncovering trees that were growing 7000 years ago","rel":"","context":"In \"climatic variability\"","block_context":{"text":"climatic variability","link":"https:\/\/climatescience.press\/?tag=climatic-variability"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0pnas.2412162121fig01.jpg?fit=1200%2C886&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0pnas.2412162121fig01.jpg?fit=1200%2C886&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0pnas.2412162121fig01.jpg?fit=1200%2C886&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0pnas.2412162121fig01.jpg?fit=1200%2C886&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0pnas.2412162121fig01.jpg?fit=1200%2C886&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":387102,"url":"https:\/\/climatescience.press\/?p=387102","url_meta":{"origin":260005,"position":4},"title":"New Study Indicates The North Atlantic Is Colder Now Than Any Other Time In The Last 9000 Years","author":"uwe.roland.gross","date":"07\/05\/2025","format":false,"excerpt":"According to a\u00a0new study, abrupt (\u00b11-2\u00b0C per century) shifts in North Atlantic Sea surface temperature (SST) have occurred routinely over the last 9000 years. These decadal- to centennial-scale climate changes were \u201cinduced by Holocene summer insolation and atmosphere-ocean internal variability.\u201d","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/07\/0AQNIufr_LyzLiWjseRqh9t51BpXUnTki9ljFPn-bIBfLLeZoM_7gfvlh8TfDD8UOvRl6CaSZvKP_RD3kuI36ePF6rWiExQuAtl3eEEt0uMdUEebFexrrSNwo0ixuWL4SqPhvaq12xfaY5sEHHhY8u8O0D_od3A-1.jpeg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/07\/0AQNIufr_LyzLiWjseRqh9t51BpXUnTki9ljFPn-bIBfLLeZoM_7gfvlh8TfDD8UOvRl6CaSZvKP_RD3kuI36ePF6rWiExQuAtl3eEEt0uMdUEebFexrrSNwo0ixuWL4SqPhvaq12xfaY5sEHHhY8u8O0D_od3A-1.jpeg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/07\/0AQNIufr_LyzLiWjseRqh9t51BpXUnTki9ljFPn-bIBfLLeZoM_7gfvlh8TfDD8UOvRl6CaSZvKP_RD3kuI36ePF6rWiExQuAtl3eEEt0uMdUEebFexrrSNwo0ixuWL4SqPhvaq12xfaY5sEHHhY8u8O0D_od3A-1.jpeg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/07\/0AQNIufr_LyzLiWjseRqh9t51BpXUnTki9ljFPn-bIBfLLeZoM_7gfvlh8TfDD8UOvRl6CaSZvKP_RD3kuI36ePF6rWiExQuAtl3eEEt0uMdUEebFexrrSNwo0ixuWL4SqPhvaq12xfaY5sEHHhY8u8O0D_od3A-1.jpeg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/07\/0AQNIufr_LyzLiWjseRqh9t51BpXUnTki9ljFPn-bIBfLLeZoM_7gfvlh8TfDD8UOvRl6CaSZvKP_RD3kuI36ePF6rWiExQuAtl3eEEt0uMdUEebFexrrSNwo0ixuWL4SqPhvaq12xfaY5sEHHhY8u8O0D_od3A-1.jpeg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":324615,"url":"https:\/\/climatescience.press\/?p=324615","url_meta":{"origin":260005,"position":5},"title":"Nature Publication: Researchers Find Arctic Region 10,000 Years Ago Warmer Than Today","author":"uwe.roland.gross","date":"04\/29\/2024","format":false,"excerpt":"Examined today is a paper appearing in the journal Nature Communications titled: \u201cSeasonal sea-ice in the Arctic\u2019s last ice area during the Early Holocene\u201d The authors looked at sea ice in the region of the Lincoln Sea, bordering northern Greenland and Canada, will be the final stronghold of perennial Arctic\u2026","rel":"","context":"In \"Arctic\"","block_context":{"text":"Arctic","link":"https:\/\/climatescience.press\/?tag=arctic"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/0Melting_Sea_Ice.JPG_9iZp5pr.jpg?fit=1200%2C796&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/0Melting_Sea_Ice.JPG_9iZp5pr.jpg?fit=1200%2C796&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/0Melting_Sea_Ice.JPG_9iZp5pr.jpg?fit=1200%2C796&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/0Melting_Sea_Ice.JPG_9iZp5pr.jpg?fit=1200%2C796&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/04\/0Melting_Sea_Ice.JPG_9iZp5pr.jpg?fit=1200%2C796&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0Screenshot-2023-06-01-115821.png?fit=896%2C503&ssl=1","_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/260005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=260005"}],"version-history":[{"count":3,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/260005\/revisions"}],"predecessor-version":[{"id":260010,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/260005\/revisions\/260010"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/260009"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=260005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=260005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=260005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}