Update README.md

Author: kemccusker

README.md

@@ -2,10 +2,9 @@
 
 # DSCIM: The Data-driven Spatial Climate Impact Model
 
-This Python library enables the calculation of a sector integrated social cost of carbon
-(SCC) using a variety of valuation methods and assumptions. The main purpose of this
+This Python library enables the calculation of sector-specific partial social cost of greenhouse gases (SC-GHG) and SCGHGs that are combined across sectors using a variety of valuation methods and assumptions. The main purpose of this
 library is to parse the monetized spatial damages from different sectors and integrate them
-using different options (or menu options) that encompass different decisions, such as
+using different options ("menu options") that encompass different decisions, such as
 discount levels, discount strategies, and different considerations related to
 economic and climate uncertainty.