In the round
Guests: Don brought Earl Drennen. They attend the same church and Earl is looking for a job.
Fines: Tim proposed a fine to table #1 in honor of Bezjak since he wasn’t here to fine them himself. Passed.
Announcements: Tim Pollack: Ticket for the Charity Raffle at Columbine C.C. on April 28 th are available.
Doug: Sign up for the rush party. We need better response. Also, speaker for next week is an ex-gang member. Should be interesting. Doug also wanted to know if the “prez” learned to speak from Enslow huuuuuuuuum
Bingo: had a $4000 deposit.
Program: We were able to get our bone cruncher, Barney O’Grady, to come to the meeting so he could introduce our program, Todd Hinkley. Todd has been a geologist at the U.S. Geological Survey in Lakewood since 1975. Before that he got his geology degree at Caltech in Pasadena . His work specialty is trace elements and dust, carried and deposited by the atmosphere. Also the composition and chemistry of natural water, including snow and ice. For the past five years he has worked at the National Ice Core Lab (NICL) which looks after cores of ice that have been drilled in Greenland and Antarctica . The purpose of working on those ice cores is to use them to get information on the Earth's past weather and climate, and information on the composition of the Earth's atmosphere, including "greenhouse gasses".
The U.S. National Ice Core Laboratory (NICL) is a facility for storing, curating, and studying ice cores recovered from the polar regions of the world. It provides scientists with the capability to conduct examinations and measurements on ice cores, and it preserves the integrity of these ice cores in a long-term repository for current and future investigations.
Ice cores contain an abundance of climate information --more so than any other natural recorder of climate such as tree rings or sediment layers. Although their record is short (in geologic terms), it can be highly detailed. An ice core from the right site can contain an uninterrupted, detailed climate record extending back hundreds of thousands of years. This record can include temperature, precipitation , chemistry and gas composition of the lower atmosphere, volcanic eruptions, solar variability, sea-surface productivity and a variety of other climate indicators. It is the simultaneity of these properties recorded in the ice that makes ice cores such a powerful tool in paleoclimate research.
Acquiring each ice core from a remote region of the world and transporting it back to the National Ice Core Laboratory safely can require several years of planning and execution. Drilling the core is the responsibility of the Ice Coring and Drilling Services. The process of safely transporting ice cores from the drill site back to the National Ice Core Laboratory in Denver requires the diligence and cooperation of several organizations including the National Science Foundation, Raytheon Polar Services and the New York Air National Guard. Responsibility for sample allocation falls under the NICL Science Management Office. Distribution policies are available at http://nicl-smo.unh.edu/access.html
* To provide for the safekeeping of ice cores from all over the world by maintaining them in a controlled environment in a state-of-the-art facility.
* To insure that these cores are easily accessible to the scientific community.
* To provide a focal point for communication among members of the ice-core research community.
* To promote an understanding and appreciation of ice core research through extensive outreach activities.
Contributions to Global Change Research.
Climatology, the study of how the Earth's climate system works, operates under a distinct handicap in comparison to other phenomenological sciences. Other fields of study permit the formation of hypotheses and subsequent testing of these hypotheses by direct experimentation in the laboratory. This is not feasible in climatology, for we live in the only laboratory possible. It is called the Earth.
Because we would be ill-advised to experiment on our only laboratory, we are left to construct computer models of how we believe the climate system of our planet works. If we understand the climate system correctly and have constructed our model appropriately, then the behavior of our model climate system should mimic the behavior of the Earth's climate system. One of the best ways to test our model is to see if it can reproduce the changes in climate which have happened throughout the long history of the Earth. Thus, acquiring detailed climate records extending back many hundreds of thousands of years has become a research priority in the study of global change.
The study of ice cores is an indispensable part of this process. Over the past decade, research on the climate record frozen in ice cores from the polar regions has changed our basic understanding of how the climate system works. Changes in temperature and precipitation which previously we believed would require many thousands of years to happen were revealed, through the study of ice cores, to have happened in fewer than twenty years. These discoveries have challenged our beliefs about how the climate system works. We have been required to search for new, faster mechanisms for climate change and we have begun to consider the interaction between industrial man and climate in light of these newly revealed mechanisms.
If you are interested in arranging a tour either for an individual or for a group, your first point of contact is the NICL Curator. He can be reached at 303-202-4830 or firstname.lastname@example.org or http://nicl.usgs.gov/index.html There is a lot of info at this site. Tim Pollak mentioned his dad designed the drill bit used for ice cores when at SIPRE (Snow, Ice and Permafrost Research Establishment) of the United States Army Corp of Engineers