0. SECTIONS
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1. Project
2. Dataset
3. Terms of Use
4. Contents
5. Method and Processing

1. PROJECT
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Title: Diagnosing Earth's Energy Pathways in the Climate system (DEEP-C) 
Dates: 2014 - 2017
Funding organisation: NERC
Grant no.: NE/K005480/1

We acknowledge the support from the the National Centre for Atmospheric Science and the National Centre for Earth Observation.

2. DATASET
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Title: Reconstructions of the radiation fluxes at top of atmosphere and net surface energy flux in the period 1985-2015 from DEEP-C project

Description: In order to study which mechanisms explain the reduced global surface warming rate since around 2000, and where the excess energy is due to rising greenhouse gas, the radiation fluxes (OLR, ASR and NET) at the top of atmosphere (TOA) prior to the CERES period are reconstructed using satellite observations, atmospheric reanalysis (ERA-Interim)and AMIP5 model simulations. The new approach using the mass-corrected atmospheric energy divergencies (transports) from ERA-Interim is employed to estimate the net surface energy fluxes.

Publication Year:   	2015
Creator(s):   		Chun Lei Liu and Richard P. Allan
Organisation(s): 	University of Reading
Rights-holder(s):	University of Reading

Source(s): https://ceres.larc.nasa.gov/order_data.php	http://www.ecmwf.int/en/research/climate-reanalysis/era-interim.


3. TERMS OF USE
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Copyright University of Reading 2017. This dataset is licensed by the rights-holder(s) under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/.

4. CONTENTS
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File listing

TOA radiation fluxes
	Normal weighting (cos(lat))
		DEEPC_TOA_NET_v03.0_198501-201601.nc
		DEEPC_TOA_ASR_v03.0_198501-201601.nc
		DEEPC_TOA_OLR_v03.0_198501-201601.nc
	Geodetic weighting
		DEEPC_TOA_NET_v03.0_198501-201601_GEOD.nc
		DEEPC_TOA_ASR_v03.0_198501-201601_GEOD.nc
		DEEPC_TOA_OLR_v03.0_198501-201601_GEOD.nc

Surface energy flux
	Normal weighting
		Fmass_v03.0_R.nc
		Fmass_v03.0_R_intermediate.nc

	Geodetic weighting
		Fmass_v03.0_R_GEOD.nc

Atmospheric divergence/transport (mass corrected and land surface flux adjusted)
	Normal weighting (cos(lat))
		TEDIV_v03.0_R.nc


All files are in netcdf format. The downward fluxes are defined as positive.
The TOA radiation fluxes are from Jan 1985 to Jan 2016.
The surface energy flux is the net energy flux from Jan 1985 to Dec 2015.
Geodetic weighting can be found at https://ceres.larc.nasa.gov/science_information.php?page=GeodeticWeights.

Fmass_v03.0_R.nc and Fmass_v03.0_R_GEOD.nc: the excess/deficit land surface fluxes are redistributed to the oceans zonally (using normal distribution weight in latitude direction). See Liu et al. (2017).

Fmass_v03.0_R_intermediate.nc: the excess/deficit land surface fluxes are redistributed to the hemispheric oceans evenly. See Liu et al. (2015).


5. METHOD and PROCESSING
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For detailed method, please see

Allan, R.P., Liu, C., Loeb, N.G., Palmer, M.D., Roberts, M., Smith, D. and Vidale, P.-L. (2014), Changes in global net radiative imbalance 1985-2012. Geophysical Research Letters, 41 (15). pp. 5588-5597. ISSN 0094-8276 doi: 10.1002/2014GL060962.

Liu, C., Allan, R.P., Berrisford, P., Mayer, M., Hyder, P., Loeb, N., Smith, D., Vidale, P.-L. and Edwards, J.M. (2015), Combining satellite observations and reanalysis energy transports to estimate global net surface energy fluxes 1985-2012. Journal of Geophysical Research: Atmospheres, 120 (18). pp. 9374-9389. ISSN 2169-8996 doi: 10.1002/2015JD023264.

Liu, C., Allan, R.P., Mayer, M., Hyder, P., Loeb, N., Roberts, C.D., Valdivieso, M., Edwards, J.M. and Vidale, P.-L. (2017), Evaluation of satellite and reanalysis-based global net surface energy flux and uncertainty estimates, submitted to JGR-Atmosphere.