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54th Practical Online Course in Climate Time Series Analysis

15–19 December 2025

This Online Course in Climate Time Series Analysis is tailored for postdocs and advanced PhD students working at the interface of climate science and time series analysis. No prior formal training in statistics is required; familiarity with basic mathematics is assumed. The course also appeals to established researchers wishing to update their knowledge or acquire new statistical techniques. Participants typically come from climatology, ecology, econometrics, environmental sciences, geosciences, hydrology, meteorology, chemistry or physics, as well as related sustainability fields.

ACRE Scholarship: Limited, need-based fee reductions are available for early-career researchers/students. See "Registration" below for how to apply.

Accessible and well-supported: intensive online delivery with live-chat support and guided exercises. Key concepts are revisited across modules to consolidate understanding.

What makes it different from other online courses? First, you have streaming access to carefully designed, recorded and edited lecture videos throughout the course and until the end of the two-month feedback period. You can pause and rewatch as needed, and you retain the slide deck for study. Second, daily live-chat sessions via a video platform during the course enable you to prepare questions and obtain comprehensive answers. Third, original analysis software — built to extract the most from noisy climate time series and documented in peer-reviewed publications — expands your analytical toolkit. Fourth, a two-month feedback period after the course (via email and, where appropriate, an online meeting) preserves the interactive mode of shared data analysis, allowing you to pursue real applications, including on your own data.

Don't worry if formulas make you hesitate — you will learn both the basics and advanced methods here. You'll gain the required statistical tools and extensive hands-on training to analyse your data optimally and answer climate-related questions. You'll acquire the theoretical foundations needed to understand the tools and interpret results, and you'll learn to quantify uncertainties from data, climate models and statistical estimation.

Climate case studies illustrate how the tools help you get the most from your data — and how to publish results in a thesis or research paper. Examples include:

The course instructor, Dr. Manfred Mudelsee — trained in physics, geology and statistics — has long-standing expertise in teaching statistical methods to non-specialists.

What you get

Lectures and hands-on tutorials. Carefully structured lecture videos with guided exercises.

Early access (before the course). As soon as materials go online (10+ days in advance) you receive streaming access to the lecture videos, the full slide deck (PDF), datasets, software and selected readings (PDFs). Included: an e-book version of the textbook (Mudelsee, 2014, Climate Time Series Analysis, 2nd edition, Springer, 454 pp).

During the course days. Daily live-chat sessions (typically up to one hour) for questions and comprehensive answers; streaming access continues.

After the course. A two-month individual feedback period (email and, if helpful, one-to-one online meetings). Streaming access remains available until the end of this period.

Bring your own data. Strongly encouraged. The course is limited to 10 participants to allow in-depth individual consultation.

Free preview. Module 01 "Introduction (Lecture)" is freely available on YouTube.

Past participants: country list

Argentina, Australia, Austria, Bangladesh, Belgium, Brazil, Canada, Chile, China, Colombia, Croatia, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, India, Indonesia, Ireland, Italy, Japan, Latvia, Luxembourg, Nepal, Netherlands, Nigeria, Norway, Poland, Portugal, Saudi Arabia, South Africa, South Korea, Spain, Sweden, Switzerland, Ukraine, United Kingdom, United States of America, Uruguay

Past participants: references

Karolina Leszczynska
Geohazards Research Unit, Institute of Geology, Adam Mickiewicz University, Poznań, Poland
In January 2025, I participated in the Climate Time Series Analysis course. It was a unique opportunity to explore statistical methods used for analysing paleoclimate data. One of the advantages of this course is that you can participate remotely and still be in constant contact with the lecturer, Manfred Mudelsee. Complex topics are presented not only in an accessible way but also in a highly aesthetic format. Everything is refined down to the smallest detail. Regular meetings with the instructor allow for immediate clarification of doubts and questions. Another invaluable aspect is the ability to revisit the content whenever a deeper review is needed. The weekly structure of the course encourages commitmentif you're going to do this course, it's worth setting aside the time to concentrate on it.


István Gábor Hatvani
Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network and Center of Environmental Studies, Eötvös Loránd University, Hungary
As a researcher at the beginning of his career, it was extraordinary to see such an established scholar speaking the language of the young. The short course I attended was practice-oriented, and all of his explanations were straightforward. Since the students were not only allowed but encouraged to bring their own problems/data, this was truly a lesson for all of us. We could not ask a question he could not have answered in a more professional and comprehensive manner. All in all, it was one of the most useful courses in time series analysis I have had.


Henrieka Detlef
School of Earth and Ocean Sciences, Cardiff University, UK
The course is very helpful and gives great insight into statistical methods important in paleoclimate research. I've already used some of the software to analyse my data and it has proven to be extremely useful.

Registration

  • Registration form (PDF): download
  • Capacity: 10 participants maximum (first come, first served).
  • Registration start: 23 September 2025
  • Deadline: 1 December 2025
  • How to register: Download the registration form (PDF), complete it, and email it to 54th-onlinecourse@climate-risk-analysis.com.
  • What to include: Everything requested is specified in the form (contact, affiliation, research field, operating system, optional own data, short CV). No separate email text needed.
  • Payment: After we receive your email, you will receive an official payment request electronically. Registration is complete once payment is received. The invoice will be sent electronically to your institution and to you.
  • Welcome and access: After payment, you'll receive a welcome email with practical information. Course materials go online at least 10 days before the start, streaming access begins at that time.
  • Advanced Climate Risk Education (ACRE) Scholarship (optional): ACRE (a non-profit sister company of CRA) offers need-based fee reductions (not full waivers). Priority is given to early-career researchers and applicants from low- and middle-income countries; merit may also be considered. How to apply: Tick the scholarship option in the registration form (Section 1) and add a brief motivation (up to 120 words) on need and expected impact (Section 3). Decisions: rolling review; same deadline as course registration. Scope: reduces the course fee only (does not cover hardware or software, internet access or other costs).

Included in course fee

  • Course lectures and tutorials as module videos (~16 hours total; streamed, protected online access):

    • Day 1 (Monday, 15 December 2025): Module 01 Introduction (Lecture)
    • Day 1 (Monday, 15 December 2025): Module 02 Introduction (Tutorial)
    • Day 1 (Monday, 15 December 2025): Module 03 Persistence Models (Lecture)
    • Day 1 (Monday, 15 December 2025): Module 04 Persistence Models (Tutorial)
    • Day 2 (Tuesday, 16 December 2025): Module 05 Bootstrap Confidence Intervals (Lecture)
    • Day 2 (Tuesday, 16 December 2025): Module 06 Regression I (Lecture)
    • Day 2 (Tuesday, 16 December 2025): Module 07 Regression I (Tutorial)
    • Day 3 (Wednesday, 17 December 2025): Module 08 Spectral Analysis (Lecture)
    • Day 3 (Wednesday, 17 December 2025): Module 09 Spectral Analysis (Tutorial)
    • Day 3 (Wednesday, 17 December 2025): Module 10 Extreme Value Time Series (Lecture)
    • Day 3 (Wednesday, 17 December 2025): Module 11 Extreme Value Time Series (Tutorial)
    • Day 4 (Thursday, 18 December 2025): Module 12 Correlation (Lecture)
    • Day 4 (Thursday, 18 December 2025): Module 13 Correlation (Tutorial)
    • Day 4 (Thursday, 18 December 2025): Module 14 Regression II (Lecture)
    • Day 4 (Thursday, 18 December 2025): Module 15 Regression II (Tutorial)
    • Day 5 (Friday, 19 December 2025): Module 16 Future Directions (Lecture)
    • Day 5 (Friday, 19 December 2025): Open Session: Recap, Q&A, joint data analyses, individual presentations, outlook

  • Daily live chat during course days (typically up to one hour). Start time decided together; your comments in the registration form are appreciated.
  • Course slides (408 pages, PDF, downloadable, protected online access)
  • Data, software (Windows and macOS executables; selected Fortran source code) and reading material (downloadable, protected online access).
  • Caliza™ 3.0 software (full version included).
  • Two-month individual post-course feedback period, with continued video access, software support and general statistical advice.
  • Textbook Mudelsee 2014 Climate Time Series Analysis, 2nd edition, Springer, 454 pp. (e-book version).

Course fee

  • Standard fee: EUR 1 200 (+ VAT where applicable).
  • If awarded an ACRE Scholarship (EUR 400 reduction): EUR 800 (+ VAT where applicable).
  • VAT details: see the registration form.

Organizer

  • Climate Risk Analysis (CRA), Kreuzstrasse 27, Heckenbeck, 37581 Bad Gandersheim, Germany
  • Contact person: Dr. Manfred Mudelsee, phone +49 5563 9998140
  • Course email (registration and queries): 54th-onlinecourse@climate-risk-analysis.com

Technicalities

  • Language: English (post-course feedback also possible in German)
  • Computer: required for tutorials, administrator rights needed to install software
  • Computer operating system: Windows preferred, macOS and Linux also work
  • Computing environment: the course accommodates MATLAB, Python, R, S-Plus, etc.
  • Data: own data welcome (ASCII format; details in the confirmation email)

Certificate

  • Detailed certificate of taught topics, sent electronically at the end of the course

Flyer

  • High-resolution DIN A4 PDF — Flyer

Invoice

  • Sent electronically after payment

Milestones

     
#1 Registration, start Tue 23 Sep 2025
#2 Registration, deadline Mon 1 Dec 2025
#3 Course material put online and made available to participants Wed 3 Dec 2025
#4 Start of course (daily chats) Mon 15 Dec 2025
#5 End of course Fri 19 Dec 2025
#6 Course certificate email Fri 19 Dec 2025
#7 End of two-month individual post-course feedback period Fri 20 Feb 2026

A very warm welcome!