Hello, there are two distinct measuring concepts at play here: - SUMO gives you milligrams of matter. This is more or less computed from a model of the energy use / fuel consumption of the vehicle. (You know how much CO2 is emitted from the amount of fuel that is burned) - Whenever you measure air pollutants with a sensor you measure the concentration in the air either in parts per million (ppm) or in grams per cubic meter (mg/m3).
ppm can be converted to mg/m3 but you cannot easily convert mg into mg/m3 because that requires a model of what happens between the motor and the sensor. If you measure at the side of the road you need to account for all kinds of environmental conditions (humidity, wind ...) and even if you measure at the tailpipe you need to know what else is mixed into the exhaust gas (I'm no expert at this). regards, Jakob 2013/12/6 Oscar Arley Orozco Sarasti <[email protected]> > Hello again SUMO researchers, I'm writing again to you because I have > another doubt about your wonderful program. > The thing is, when I configure SUMO to output the file "emission-output" > file, this file give me all the information about the emissions of the > nodes in each simulation step. Particularly I'm interested in the CO2 > emissions, but I've noticed that this value is given to me in mg > (miligrams). And for the research I'm doing, I need that data in ppm (parts > per million); so I've been surfing a little the Net and I found this page ( > http://www.skcinc.com/converter/converter.asp) that converts me the > miligrams to parts per million, but it accepts the unit: mg/m3. So, my > question is, is correct that conversion that I'm doing with help of this > page? The value in SUMO is expressed in mg/m3 (where the cubic meters are > represented by the air)? Or, I'm very very wrong? > Could you help me and assist me in this issue? I need the CO2 values in > ppm. > > Thank you very much for your help with my previous question, the problem I > had was solved with your answer. > > Best! > > Oscar Orozco > Researcher, Telecommunications Engineer > Icesi University > Cali-Colombia. > > ________________________________ > > Este documento puede contener informaci?n privilegiada o confidencial. Por > tanto, usar esta informaci?n y sus anexos para prop?sitos ajenos a los de > la Universidad Icesi, divulgarla a personas a las cuales no se encuentre > destinado este correo o reproducirla total o parcialmente, se encuentra > prohibido en virtud de la legislaci?n vigente. La universidad no asumir? > responsabilidad sobre informaci?n, opiniones o criterios contenidos en este > correo que no est?n directamente relacionados con la Icesi. Si usted no es > el destinatario autorizado o por error recibe este mensaje, por favor > informe al remitente y posteriormente b?rrelo de su sistema sin conservar > copia del mismo. > > ------------------------------------------------------------------------------ > Sponsored by Intel(R) XDK > Develop, test and display web and hybrid apps with a single code base. > Download it for free now! > > http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk > _______________________________________________ > sumo-user mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sumo-user > ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
