{"id":77,"date":"2016-03-22T17:28:47","date_gmt":"2016-03-22T17:28:47","guid":{"rendered":"http:\/\/newvista.cira.colostate.edu\/Improve\/?page_id=77"},"modified":"2024-12-12T18:07:33","modified_gmt":"2024-12-12T18:07:33","slug":"reconstructed-fine-mass","status":"publish","type":"page","link":"https:\/\/vista.cira.colostate.edu\/Improve\/reconstructed-fine-mass\/","title":{"rendered":"Reconstructed Fine Mass"},"content":{"rendered":"\n<p>Data collected from the IMPROVE program are used to calculate aerosol particle mass and visibility parameters.&nbsp; IMPROVE Reconstructed Fine Mass (RCFM) is the sum of ammonium sulfate, ammonium nitrate, particulate organic mass, elemental carbon, soil, and sea salt. &nbsp;The algorithm for RCFM has the following form, with concentrations in \u03bcg m<sup>-3<\/sup>:<\/p>\n\n\n\n<p>[RCFM] = ammonium sulfate + ammonium nitrate + organic mass + elemental carbon + fine soil + sea salt<\/p>\n\n\n\n<p>Each of these components is derived from IMPROVE measurements, with concentrations designated in square brackets, where:<\/p>\n\n\n\n<p>Ammonium Nitrate = 1.29*[ NO<sub>3<\/sub><sup>&#8211;<\/sup>];<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Ammonium Sulfate = 4.125*[S];<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Fine Soil = 2.2*[Al]+2.49*[Si]+1.63*[Ca]+2.42*[Fe]+1.94*[Ti];<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Organic Mass by Carbon = 1.8*([OC1]+[OC2]+[OC3]+[OC4]+[OP]);<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Elemental = [EC1]+[EC2]+[EC3]-[OP];<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Sea Salt = 1.8 * [Cl<sup>&#8211;<\/sup>];<\/p>\n\n\n\n<p>In these calculation, OC1, OC2, OC3,and OC4 designate organic carbon fractions; EC1, EC2 and EC3 designate elemental carbon fractions; and OP designates pyrolized organic carbon; all are determined from the TOR method.<\/p>\n\n\n\n<p>Key assumptions on which this model is based include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>All aerosol sulfur is in the form of (NH<sub>4<\/sub>)<sub>2<\/sub>SO<sub>4<\/sub>;<\/li>\n\n\n\n<li>All aerosol nitrate is in the form of NH<sub>4<\/sub>NO<sub>3<\/sub>;<\/li>\n\n\n\n<li>All Al, Ca, Si, Fe, and Ti are of crustal source;<\/li>\n\n\n\n<li>All crustal material is made up of the same basic oxides;<\/li>\n\n\n\n<li>The A, B, and C modules all have cut points of 2.5 \u03bcm.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Data collected from the IMPROVE program are used to calculate aerosol particle mass and visibility parameters.&nbsp; IMPROVE Reconstructed Fine Mass (RCFM) is the sum of ammonium sulfate, ammonium nitrate, particulate organic mass, elemental carbon, soil, and sea salt. &nbsp;The algorithm for RCFM has the following form, with concentrations in \u03bcg m-3: [RCFM] = ammonium sulfate [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-77","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/77","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/comments?post=77"}],"version-history":[{"count":7,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/77\/revisions"}],"predecessor-version":[{"id":3998,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/77\/revisions\/3998"}],"wp:attachment":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/media?parent=77"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}