Tree Rings: The Long View of Climate

Within their annual rings, trees capture the conditions and events that shaped their lives over hundreds or even thousands of years. Join research scientist Jeff Lukas of the University of Colorado Boulder to learn how dendrochronology (tree-ring science) can unlock these long records and shed light on the past. We'll focus on what tree rings can tell us about climate, while also touching on tree biology, forest ecology, and hydrology. We'll start at ACES' Hallam Lake nature preserve with an orientation to tree rings, spend a few hours in the field taking core samples from old, drought-sensitive trees, head back to mount and sand the cores and then see what we can learn about the past climate of the Roaring Fork Valley - and perhaps the future climate, too.

This class requires advance registration to ensure appropriate planning for the field experience. Registration period closes 2 days before the start of the class.

Jeff Lukas is a Research Integration Specialist with the Western Water Assessment, a NOAA-supported research program based at the University of Colorado Boulder. For the past 15 years, Jeff has worked closely with water managers and other decision-makers in the Rocky Mountain West to help them understand and prepare for climate-related vulnerabilities. He was lead author of the 2014 Climate Change in Colorado report for the Colorado Water Conservation Board, summarizing the latest science on observed climate trends and future climate projections for the state. Jeff has a B.A. in Geography from the University of Colorado Boulder and an M.S. in Forestry from the University of Montana.

WHAT TO BRING: Please bring a day pack with lunch, plenty of water, rain jacket, clothing for warm/cold weather, sunscreen, a hat, and sunglasses. Bring binoculars, field guide books, journal, or camera to enhance your experience.

HOW TO GET THERE: Please bike or walk to ACES whenever possible! We understand that you'll need to drive to ACES for certain classes - 6am birding classes, photo field trips, etc. However, when you can, make it a personal challenge and see if you can drive fewer times than last year! Parking at ACES is limited.
$45.00 Members
$75.00 Non Members
Hallam Lake
9:00am - 3:00pm
Class Maximum10
Spots Available5
Wait List0
A password reset message will be sent to your e-mail address.
User login
User register

Log in

You may login with either your assigned username or your e-mail address.
The password field is case sensitive.


Account information
A valid e-mail address. All e-mails from the system will be sent to this address. The e-mail address is not made public and will only be used if you wish to receive a new password or wish to receive certain news or notifications by e-mail.
Provide a password for the new account in both fields.
Personal Information
This question is for testing whether you are a human visitor and to prevent automated spam submissions.