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Oral Session 1<\/a> | Monday, October 3, 12:00\u201312:20 | Abstract 497<\/p>\n [\/et_pb_text][et_pb_text admin_label=”Extended abstracts” _builder_version=”4.18.0″ link_font=”||||on||||” header_3_font=”|800||on|||||” header_3_text_color=”#057184″ header_3_font_size=”20px” header_3_line_height=”1.3em” background_size=”initial” background_position=”top_left” background_repeat=”repeat” max_width=”900px” custom_margin=”7px||2px|||” custom_padding=”||15px|||” use_border_color=”off” global_colors_info=”{}” link_text_color__hover=”#a5a5a5″ link_text_color__hover_enabled=”on|hover”]<\/p>\n [\/et_pb_text][et_pb_text admin_label=”Extended abstracts” _builder_version=”4.18.0″ link_font=”||||on||||” header_3_font=”|800||on|||||” header_3_text_color=”#057184″ header_3_font_size=”20px” header_3_line_height=”1.2em” background_size=”initial” background_position=”top_left” background_repeat=”repeat” custom_margin=”7px|||||” hover_enabled=”0″ use_border_color=”off” global_colors_info=”{}” link_text_color__hover=”#a5a5a5″ link_text_color__hover_enabled=”on|hover” sticky_enabled=”0″]<\/p>\n LISST-VSF is a commercially available instrument providing state-of-the-art in situ measurements of the volume scattering function (VSF) at 0.01-150 degrees. Accurate VSF measurements are important for several reasons, such as understanding underwater particle-light interactions and improving satellite and in situ observation capabilities. However, significant errors in the measured VSF are observed in turbid waters. We have simulated the LISST-VSF using a Monte Carlo algorithm, validated through comparison with laboratory measurements. The results demonstrate that the observed errors originate from multiple scattering. When computing VSFs from LISST-VSF measurements, one assumes that all scattered photons are only scattered once. This assumption breaks down when the water becomes turbid, causing elevated VSFs and distorted phase functions. The measured VSF can be orders of magnitude larger than the true VSF, and the error is shown to be dependent on both optical depth and phase function. By employing a neural network, we can approach a general correction function for the LISST-VSF using a large set of training data. While experimental data is limited, training data can be generated using the Monte Carlo algorithm. Training the network on VSFs simulated with large variations in phase function and scattering coefficient enables accurate predictions of the true VSF from VSF measurements. Experimental results show that the error in the VSF can be reduced from 384% to 11% for very turbid water. Multiple scattering in turbid waters is likely a widespread problem for scattering instrumentation. Hence, methods presented here can be applicable to other VSF instruments and past measurements.<\/p>\n \n H\u00e5vard Ugulen<\/b><\/a><\/span>, University of Bergen<\/p>\n H\u00e5kon Sandven<\/a><\/span>, University of Bergen<\/p>\n Camilla S\u00e6tre<\/a><\/span>, University of Bergen<\/p>\n B\u00f8rge Hamre<\/a><\/span>, University of Bergen<\/p>\n Arne Kristoffersen<\/a><\/span>, University of Bergen<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ custom_padding_last_edited=”on|tablet” _builder_version=”4.14.7″ _module_preset=”default” background_enable_color=”off” background_image=”https:\/\/oceanopticsconference.org\/wp-content\/uploads\/2022\/01\/oo22-banner-bckd.jpg” custom_padding=”0px||11px||false|false” custom_padding_tablet=”0px||11px||false|false” custom_padding_phone=”||27px||false|false” global_module=”2766″ saved_tabs=”all” locked=”off” global_colors_info=”{}”][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_padding=”0px||8px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_social_media_follow use_icon_font_size=”on” icon_font_size=”19px” _builder_version=”4.16″ _module_preset=”default” custom_button=”on” text_orientation=”right” custom_margin=”-10px||11px||false|false” custom_margin_tablet=”-9px||5px||false|false” custom_margin_phone=”-9px||5px||false|false” custom_margin_last_edited=”on|tablet” global_colors_info=”{}” button_text_size__hover_enabled=”on|desktop”][et_pb_social_media_follow_network social_network=”facebook” url=”https:\/\/www.facebook.com\/OceanOpticsConference\/” _builder_version=”4.16″ _module_preset=”default” background_color=”#9b9b9b” background_enable_color=”on” global_colors_info=”{}” background__hover_enabled=”on|hover” background_color__hover=”#0C71C3″ background_enable_color__hover=”on” follow_button=”off” url_new_window=”on”]facebook[\/et_pb_social_media_follow_network][et_pb_social_media_follow_network social_network=”twitter” url=”https:\/\/twitter.com\/OceanOpticsConf” _builder_version=”4.16″ _module_preset=”default” background_color=”#9b9b9b” background_enable_color=”on” global_colors_info=”{}” background__hover_enabled=”on|hover” background_color__hover=”#0C71C3″ background_enable_color__hover=”on” follow_button=”off” url_new_window=”on”]twitter[\/et_pb_social_media_follow_network][\/et_pb_social_media_follow][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,1_3,1_3″ use_custom_gutter=”on” gutter_width=”2″ _builder_version=”4.16″ _module_preset=”default” custom_padding=”13px||34px|0px||” global_colors_info=”{}”][et_pb_column type=”1_3″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.16″ _module_preset=”default” header_font_size=”26px” header_2_font=”|||on|||||” header_2_text_align=”center” header_2_text_color=”#FFFFFF” header_2_font_size=”21px” text_orientation=”center” custom_margin=”||5px|||” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_text_color=”#FFFFFF” link_font=”||||on||||” link_text_color=”#FFFFFF” header_2_text_color=”#FFFFFF” max_width=”300px” module_alignment=”center” custom_margin=”||||false|false” custom_margin_tablet=”||-3px||false|false” custom_margin_phone=”” custom_margin_last_edited=”on|tablet” custom_padding_tablet=”||||false|false” custom_padding_phone=”||32px||false|false” custom_padding_last_edited=”on|phone” global_colors_info=”{}” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#a8a8a8″]<\/p>\n Sign up to receive email updates to be sure to catch all the meeting news. 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Accurate VSF measurements are important for several reasons, such as understanding underwater particle-light interactions and improving satellite and […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":""},"_links":{"self":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages\/6210"}],"collection":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/comments?post=6210"}],"version-history":[{"count":7,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages\/6210\/revisions"}],"predecessor-version":[{"id":6405,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages\/6210\/revisions\/6405"}],"wp:attachment":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/media?parent=6210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Simulation and correction of LISST-VSF multiple scattering errors<\/h3>\n
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