Since the start of the 21st century, temperatures have declined 0.03ºC with each additional 10 PPM of CO2.

co2_mm_mlo.txt
rss_monthly_msu_amsu_channel_tlt_anomalies_land_and_ocean_v03_3.txt

At first glance this appears to be a problem for the hockey team, but they have met the challenge by selectively picking only the tiny portion of satellite data which supports their ongoing funding.