PMIP4-CMIP6 solar forcing data

You will find on this page some of the boundary condition data that you have to use for Last Millennium past2k Please make sure to read the HOWTO section in order to use the data correctly! Get in touch with the following people if you have questions: Johann Jungclaus Last Millennium, past2k Natalia Krivova Details on the SATIRE-based data sets Tania Egorova Details on the PMOD-based data set Jean-Yves Peterschmitt Technical questions

References

Jungclaus et al., in preparation for Clim. Past

How to use the data

Read the reference paper

Note that the SATIRE-14C based data set adjusted to the CMIP6 historical forcing (SSI_14C_cycle_yearly_cmip_v20160613_fc.txt) is the default data set for PMIP4-CMIP6 past1000 experiment

Solar forcing data

Data history

The data files may change a bit (rename or standardize the data, etc…) and you will find the change list below

Data

SOLAR_FORCING_SATIRE_14C (link to the data page, below)

SOLAR_FORCING_SATIRE_10Be

SOLAR_FORCING_PMOD_14C

Data page: (lets just start with the default page)

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The PMIP4-CMIP6 SOLAR_FORCING_SATIRE_14C

The file contains solar spectral irradiance based on 14C and the SATIRE-M model for the last 9000 years (6754.5 BC to December 2015). Two versions are provided, one (*_fc.txt) with an adaptation of the spectral irradiance to the CMIP6 historical forcing, and one (*_nfc.txt) without such re-scaling. The data set scaled to the CMIP6 historical forcing is the recommended forcing for the PMIP4-CMIP6 “tier-1” past1000 experiment.

Data files

The data are provided in simple text format. The files contain the SSI reconstruction using SATIRE-M based on 14C isotopes.

The file structure is as follows: 1st array: wavelength array in [nm], listing the center of each wavelength bin. 2nd array: wavelength bin in [nm], listing the bin width of each wavelength bin. 3rd array: time in [year] (floating numbers). 4th array: SSI reconstruction in [W m-2 nm-1]. SSI is average SSI in corresponding bin.

We provide following code (IDL) to read the .txt file and calculate TSI:

;

;N=69235 for 14C reconstruction ;N=61595 for 10Be reconstruction header=strarr(12) satire_wl=dblarr(1070) satire_dwl=dblarr(1070) time=dblarr(N) SSI=dblarr(1070,N)

openr,1,filename readf,1,header readf,1,satire_wl readf,1,satire_dwl readf,1,time readf,1,SSI close,1

TSI=dblarr(N) FOR i=0L,N-1 DO TSI[i]=TOTAL(satire_dwl*SSI[*,i]) ;

Download

link to the .tar.gz file