Climatology of Total Cloudiness in the Arctic: An Intercomparison of Observations and Reanalyses

Table 1

Cloudiness data information.

	Dataset	Time period	Data resolution
Short name	Full name
Satellite observations
APP-x	Extended Advanced very high-resolution radiometer (AVHRR) Polar Pathfinder Product	01/1982–12/2004	25 km
CERES Terra; CERES Aqua	Clouds and the Earth’s Radiant Energy System SSF Product Edition 2.5 (board on Terra and Aqua)	02/2000–02/2010	1°
		07/2002–02/2010
ISCCP	International Satellite Cloud Climatology Project D2 Product	07/1983–06/2008	2.5°
MODIS Terra; MODIS Aqua	Moderate-Resolution Imaging Spectroradiometer series 5 product (board on Terra and Aqua)	02/2000–12/2009	1°
		07/2002–12/2009
PATMOS-x	AVHRR Pathfinder Atmosphere extended (version 5)	01/1982–12/2009	1°
Surface observations
EECRA	Extended Edited Cloud Report Archive	01/1971–12/1996	5°
Reanalyses data
ERA-40	European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalyses	01/1979–08/2002	2.5°
ERA-Interim		01/1989–12/2009	1.5°
JRA-25	Japan Meteorological Agency Reanalysis	01/1979–12/2009	2.5°
NASA-MERRA	National Aeronautics and Space Administration (NASA) Modern Era Reanalysis for Research and Applications	01/1979–03/2009	0.5°
NCEP-CFSR	National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis	01/1979–12/2009	0.5°
NCEP/DOE	NCEP/Department of Energy	01/1979–01/2008	~1.9° (Gaussian)
NCEP/NCAR	NCEP/National Center for Atmospheric Research	01/1979–12/2008	~1.9° (Gaussian)
NOAA-CIRES 20CR	National Oceanic and Atmospheric Administration-Cooperative Institute for Research in Environmental Sciences (NOAA-CIRES) 20th Century Reanalysis	01/1979–12/2008	~1.9° (Gaussian)