diff --git a/wrf4g/data/wn/bin/icbcprocessor.mptableCO2 b/wrf4g/data/wn/bin/icbcprocessor.mptableCO2
new file mode 100755
index 00000000..10b138e4
--- /dev/null
+++ b/wrf4g/data/wn/bin/icbcprocessor.mptableCO2
@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+# Processor to insert CO2 level corresponding to date into NOAH-MP, via the
+# MPTABLE.TBL file
+
+sformateddate=$1     # initial date to process as YYYY-MM-DD_HH:MM:SS (Ex. 1983-08-27_00:00:00)
+eformateddate=$2     # end date to process
+tblpath=$3           # run directory where CAMtr_volume_mixing_ratio and MPTABLE.TBL are located
+
+read iyy imm trash <<< `echo $sformateddate | tr '_T:-' '    '`
+read fyy fmm trash <<< `echo $eformateddate | tr '_T:-' '    '`
+
+# Extract CO2 level for current chunk (just the year, no interpolation)
+co2ppm=$(awk '$1 == '${iyy}' {print $2}' ${tblpath}/CAMtr_volume_mixing_ratio)
+# Replace CO2 level in MPTABLE
+sed -i -e 's/  CO2    = .*e-06/  CO2    = '${co2ppm}'e-06/' ${tblpath}/MPTABLE.TBL