A couple of quick notes about expense types for conferences:

Conference Registration should use expense type 553000 REGISTRATION FEES

Look at your cart before submitting your registration. Have any items like map, guidebook or membership fee been added? If they are not required, delete them before paying.

Add a note to your PCard report giving the name and dates of the conference.

Abstract submission fees should use expense type 487602 PRT/PUB/REPRO SERVICES

Add a note to your PCard report with the title and author name.

Membership fees should use expense type 510100 DUES/MEMBERSHIP-PROFESSIONAL ORGANIZATIONS. 

CIRES will not pay for a membership unless it is required. You must document on your report that that membership is required. AGU does require membership to submit an abstract.