  We present a near-real-time global gridded daily CO$_2$ emissions dataset
(GRACED) throughout 2021. GRACED provides gridded CO$_2$ emissions at a
0.1degree*0.1degree spatial resolution and 1-day temporal resolution from
cement production and fossil fuel combustion over seven sectors, including
industry, power, residential consumption, ground transportation, international
aviation, domestic aviation, and international shipping. GRACED is prepared
from a near-real-time daily national CO$_2$ emissions estimates (Carbon
Monitor), multi-source spatial activity data emissions and satellite NO$_2$
data for time variations of those spatial activity data. GRACED provides the
most timely overview of emissions distribution changes, which enables more
accurate and timely identification of when and where fossil CO$_2$ emissions
have rebounded and decreased. Uncertainty analysis of GRACED gives a grid-level
two-sigma uncertainty of value of 19.9% in 2021, indicating the reliability of
GRACED was not sacrificed for the sake of higher spatiotemporal resolution that
GRACED provides. Continuing to update GRACED in a timely manner could help
policymakers monitor energy and climate policies' effectiveness and make
adjustments quickly.
