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<P><FONT SIZE=2 FACE="Arial">Hi</FONT>
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<P><FONT SIZE=2 FACE="Arial">I am trying to find the most reputable source for estimating non-CO2 emissions from air travel? </FONT>
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<P><FONT SIZE=2 FACE="Arial">I only have passenger mile data (short, medium and long haul as defined by the GHG protocol business travel calculator) and was wondering if there are internationally accepted emissions factors for CH4 and N20 anyone can recommend?</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Regards,</FONT>
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<P><FONT SIZE=2 FACE="Arial">Fiona Berry</FONT>
<BR><FONT SIZE=2 FACE="Arial">Senior Sustainability Consultant, LEED™ AP</FONT>
<BR><FONT SIZE=2 FACE="Arial">Arup</FONT>
<BR><FONT SIZE=2 FACE="Arial">901 Market St, Suite 260, San Francisco CA 94103</FONT>
<BR><FONT SIZE=2 FACE="Arial">tel: 1 415 946 0273</FONT>
<BR><FONT SIZE=2 FACE="Arial">fax: 1 415 957 9096</FONT>
<BR><A HREF="http://www.arup.com"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">www.arup.com</FONT></U></A>
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