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Date

Description of modification

Chapters / Sections

v1.0

31/03/2023

First version

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V1v1.1

24/11/2023

Document amended in line with feedback from independent review.

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v1.2

20/03/2024

Change of reference in section 1.3

Section 1.3


List of datasets covered by this document

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Reference ID

Document

D1

Clerbaux N., Velazquez Blazquez A. (2023), C3S Earth Radiation Budget TSI v3,

Service: Algorithm Theoretical Basis Document (ATBD), Copernicus Climate Change,

Document ref: C3S2_D312a_Lot1.2.2.5-v1.0_202303_ATBD_ECVEarthRadiationBudget_v1.01

https://confluence.ecmwf.int/

pages/viewpage.action?pageId=xxxxxxxxx

x/AVMiEg

Last accessed on xx20/yy03/zzzz2024

D2

Clerbaux N., Velazquez Blazquez A, E. Baudrez (20222023), C3S Earth Radiation Budget TSI v3,

Service: Product Quality Assurance Document (PQAD), Copernicus Climate Change,

Document ref: C3S2_D312a_Lot1.1.2.5-v1.0_202212_PQAD_ECVEarthRadiationBudget_v1.01

https://confluence.ecmwf.int/pages/viewpage.action?pageId=xxxxxxxxxx/JFMiEg

Last accessed on xx20/yy03/zzzz2024

D3

Clerbaux N., A. Velazquez Blazquez (2023), C3S Earth Radiation Budget TSI v3,

Service: Product Quality Assurance Report (PQAR), Copernicus Climate Change,

Document ref: C3S2_D312a_Lot1.2.2.7-v1.0_202303_PQAR_ECVEarthRadiationBudget_v1.01

https://confluence.ecmwf.int/pages/viewpage.action?pageId=xxxxxxxxxx/HlMiEg

Last accessed on 20/03/2024Last accessed on xx/yy/zzzz

D4

Clerbaux N., E. Baudrez, A. Velazquez Blazquez (2023), C3S Earth Radiation Budget TSI v3,

Service: System Quality Assurance Document (SQAD), Copernicus Climate Change,

Doc ref: C3S2_D312a_Lot1.3.2.5-v1.01_202303_SQAD_RMIBECVEarthRadiationBudget_v1.13

https://confluence.ecmwf.int/pages/viewpage.action?pageId=xxxxxxxxxx/HFMiEg

Last accessed on xx20/yy03/zzzz2024

D5

Karlsson, K.-G., et al., (2023): C3S Earth Radiation Budget CDRs releases until March 2023: Target Requirements and Gap Analysis Document.   Copernicus Climate Change Service.

Document reference C3S2_D312a_Lot1.3.1.1-2022_TRGAD-ERB_v1.1.

https://confluence.ecmwf.int/display/CKB/ERB%3A+Target+Requirements+and+Gap+Analysis+Documentx/LFMiEg

Last accessed on 2420/1103/20232024


Acronyms

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Acronym

Definition

ACRIM

Active Cavity Radiometer Irradiance Monitor

ATBD

Algorithm Theoretical Basis Document

AU

Astronomical Unit

C3S

Copernicus Climate Change Service

CDR

Climate Data Record

CDS

Climate Data Store

CET

Central European Time

CUS

Copernicus User Support

DIARAD

DIfferential Absolute RADiometer

DWD

Deutscher Wetterdienst

ECMWF

European Centre for Medium-Range Weather Forecasts

ECV

Essential Climate Variable

ERB

Earth Radiation Budget

ERBE

Earth Radiation Budget Experiment

ERBS

Earth Radiation Budget Satellite

EURECA

European Retrievable Carrier

FAQ

Frequently Asked Question

FTP

File Transfer Protocol

GERB

Geostationary Earth Radiation Budget

HTTP

HyperText Transfer Protocol

ICDR

Interim Climate Data Record

KPI

Key Performance Indicator

PMO

Physikalisch-Meteorologisches Observatorium

PQAR

Product Quality Assurance Report

PREMOS

Precision Monitor Sensor

RMIB

Royal Meteorological Institute of Belgium

SARR

Space Absolute Radiometric Reference

SIM

Solar Irradiance Monitor

SMM

Solar Maximum Mission

SOHO

Solar and Heliospheric Observatory

SOLCON

Solar Constant

SORCE

Solar Radiation and Climate Experiment

SOVA

Solar Variability

SOVIM

Solar Variability Irradiance Monitor

TCDR

Thematic Climate Data Record

TCTE

Total Solar Irradiance Calibration Transfer Experiment

TIM

Total Irradiance Monitor

TOA

Top Of Atmosphere

TSI

Total Solar Irradiance

TSIS

Total and Spectral Solar Irradiance Sensor

UTC

Coordinated Universal Time

VIRGO

Variability of solar IRradiance and Gravity Oscillations


...

Target requirements

Spatial resolution

NA

Temporal coverage

1st January 1979 - present

Accuracy

TCDR : < 1 W/m²
ICDR : < 1 W/m²

Stability

TCDR : < 0.3 W/m²/decade
ICDR : < 0.5 W/m²/decade

1.3 Data Format

The data comes as a simple ASCII text file that can be opened with many tools such as text editors (e.g. vi, gedit, notepad, etc.), spreadsheets (e.g. excel), and graphical tools (e.g. gnuplot). It contains a header followed by the actual data. The header provides information about the CDR such as the version, type (CDR or ICDR), creation date and time, license, documentation, input time series (instruments) that have been used, and scaling factors. Any user of the data should have a careful look at the header. The data part is organized per line, with 1 line per day, with 23 columns with the content specified in Table 1-4.

Anchor
table1_4
table1_4
Table 1-4: Data format per column of the C3S v3.x daily TSI CDR.

...

Instrument flag code

0

No data available for this day. The value in the instrument column is “NaN”.

1

Data available for this day, but not used in the composite. The non-used value is in the instrument column.

2

Data available for this day and used in the composite. The non-used value is in the instrument column.

3

Data are not available for this day but interpolation is done. The interpolated value is given in the instrument’s column.

4

Data rejected for this day (e.g. outlier), interpolation is done. The original value is given in the instrument’s column.

The following figure 1-2 shows the beginning of the C3S TSI data file. The two last columns provide the TSI value from the SATIRE-S (

...

Yeo et al

...

,

...

2014a and 2014b) and the NRL TSI v2 semi-empirical models. These models are not used in the CDR, except SATIRE-S at the very beginning of the record (between 1st January 1979 and 6 November 1980).

Image Modified

Image Modified

Anchor
figure1_2
figure1_2
Figure 1-2: Beginning of the C3S TSI data file.

The users are invited to read the ATBD [D1], the PQAD [D2], the PQAR [D3], the SQAD [D4] and the TRGAD [D5] documents for additional information on the data product and production system. 

...

Anchor
references
references
References

...

Crommelynck,

...

D.

...

,

...

Crommelynck, D., Domingo, V., Domingo, V., Fichot, A., & Lee, R. (1994). Total Solar Irradiance Observations from the EURECA and ATLAS Experiments. International Astronomical Union Colloquium, 143, 63-69. doi:10.1017/S0252921100024544

...

Willson, R.C., S. Gulkis, M. Janssen, H.S. Hudson, G.A. Chapman, (1980): Observations of Solar Irradiance Variability, Science, 211, 700 - 702. doi: 10.1126/science.211.4483.700

Yeo K.L., Krivova N.A., Solanki S.K., Glassmeier K.H. (2014a): Reconstruction of total and spectral solar irradiance from 1974 to 2013 based on KPVT, SoHO/MDI and SDO/HMI observations, Astron. Astrophys., 570, A85. https://doi.org/10.1051/0004-6361/201423628

Yeo K.L., Krivova N.A., Solanki S.K. (2014b): Solar cycle variation in solar irradiance, Space Sci. Rev., https://doi.org/10.1007/s11214-014-0061-7

Info
Info
iconfalse

This document has been produced

with funding by the European Union

in the context of the Copernicus Climate Change Service (C3S)

, operated

.

The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of C3S on behalf

on

of the European Union (Delegation Agreement signed on 11/11/2014 and Contribution Agreement signed on 22/07/2021). All information in this document is provided

“as is”

"as is" and no guarantee

of

or warranty is given that the information is fit for any particular purpose.

The users thereof use the information at their sole risk and liability. For the avoidance of all doubt , the European Commission and the European Centre for Medium - Range Weather Forecasts have no liability in respect of this document, which is merely representing the

author’s

author's view.

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