Articles | Volume 17, issue 24
Atmos. Chem. Phys., 17, 15069–15093, 2017
Atmos. Chem. Phys., 17, 15069–15093, 2017

Research article 20 Dec 2017

Research article | 20 Dec 2017

How long do satellites need to overlap? Evaluation of climate data stability from overlapping satellite records

Elizabeth C. Weatherhead et al.

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Cited articles

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Araujo-Pradere, E. A., Redmon, R., Fedrizzi, M., Viereck, R., and Fuller-Rowell, T. J.: Some characteristics of the ionospheric behavior during solar cycle 23/24 minimum, Sol. Phys., The Sun–Earth Connection near Solar Minimum, edited by: Bisi, M. M., Emery, B., and Thompson, B. J.,, Springer, 2011.
Araujo-Pradere, E. A., Buresova, D., and Fuller-Rowell, T. J.: Initial results of the evaluation of IRI hmF2 performance for minima 22–23 and 23–24, Adv. Space Res., 51, 535–696,, 2012.
ASIC3: Achieving Satellite Instrument Calibration for Climate Change (ASIC3), edited by: Ohring, G., available at: (last access: 12 October 2017), 2007.
Short summary
Satellite overlap is often carried out as a check on the stability of the data collected. We looked at how length of overlap influences how much information can be derived from the overlap period. Several results surprised us: the confidence we could have in the matchup of two records was independent of the offset, and understanding of the relative drift between the two satellite data sets improved significantly with 2–3 years of overlap. Sudden jumps could easily be confused with drift.
Final-revised paper