Acycle is a comprehensive, but simple-to-use software package for analysis of time-series designed for paleoclimate research and education. 
Acycle runs either in the MATLAB environment or as a stand-alone application on Windows and Macintosh OSIt is an open-source package and is available free of charge.

Acycle provides astronomical solutions, insolation data, time-series data preparation tools, detrending procedures with multiple options available to track or remove secular trends, and integrates various power spectral analysis approaches for detection and tracking of periodic signals.
Acycle also provides a toolbox that evaluates astronomical signals in paleoclimate series, and estimates the most likely sedimentation rate by maximizing the correlation coefficient between power spectra of an astronomical solution and a paleoclimate series. Sedimentary noise models for sea-level variations are also included.
Many of the functions are specific to cyclostratigraphy and astrochronology, and are not found in standard, statistical packages.

[What they say]
Dr. James Ogg (Professor, DEPT. EARTH, ATMOS. & PLANET. SCI., Purdue University, USA):
"Mingsong Li's Acycle software enables us to quickly analyze the potential of new outcrops and boreholes, and then to determine the sedimentation rates and elapsed time. His Acycle software will become the standard tool for time-scale applications by all international workers."

Dr. Paul E. Olsen (Arthur Storke Memorial Professor of Earth and Environmental Sciences of Columbia University; Member, National Academy of Sciences of the USA):
"Not only is this software powerful and effective, it is also simple to use and therefore benefits researchers and at all levels within the paleoclimatology community, from novices to experts."

Dr. Marco Franceschi (Professor, Department of Geosciences, University of Padova, Italy):
“Dr. Li’s software is being immensely valuable to my work. Some of the stratigraphic series I am studying display a prominent cyclicity, but were deposited in contexts characterized by relevant changes in sedimentation rates and often lack accurate geochronological constraints. Acycle has been designed specifically for dealing with similar cases, by tackling them with a rigorous statistical approach, and therefore is providing an invaluable tool for their investigation.”

Dr. Xu Yao (Professor, School of Earth Sciences, Lanzhou University, China)
“I am working on cyclostratigraphy and paleoclimate study of ancient strata and rocks (270 million years ago) with assistance from Acycle software. I also introduced this software to my colleagues whose research areas are paleoclimate implications of Quaternary loess (several thousand years ago). My colleagues have given me really good feedbacks about Acycle software.”

Dr. Christian Zeeden (IMCCE, Observatoire de Paris, France):
Dr. Li’s software is novel and valuable in this context, especially because it facilitates the easy application of otherwise complex calculations.”

Dr. Arsenio Muñoz de la Peña (Professor, Department of Analytical Chemistry, University of Zaragoza, Spain):
“Thank you very much and congratulations for the acycle software. I am using it and it is very very useful and interesting.”

Dr. Nicolas R. Thibault (University of Copenhagen, Denmark):
“I’ve been playing a lot with the excellent Acycle package for Matlab that Mingsong developed. Congratulations, this is a very nice interface that simplifies a lot our work and makes it truly faster to analyse a time-series.”


Mingsong Li, Penn State
E-mail:    mul450 {at};
               limingsonglms {at} 

Please cite: Mingsong Li, Linda Hinnov, Lee Kump, 2019. Acycle: time-series analysis software for paleoclimate research and education. Computers & Geosciences.
Please give it a "⭐️Star " and " 👁Watch" if you like this software. (top right corner of the github page)
I would highly appreciate if you could answer some questions related to Acycle and your computer: 
(in English and Chinese. It only takes 1-2 minutes).
This will help improve Acycle in the future. Thank you very much!

Acycle software
Structure of the Acycle software
A case study -- eCOCO sedimentation rate map of the Fe series at ODP Leg 208 Site 1262
Help improve the software?
Submit your answers to several simple questions (1-2 minutes): 

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Suggestion and bug report?
Any advice and suggestions will be greatly appreciated.​​​​​​​
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