7/07

Thanks to all who responded to our 2007 NADP-NTN Site Supply Inventory questionnaire. With 260 sites in the network, it's a challenge to keep everyone adequately stocked with the clean supplies. If you have not done so already, please take the time to let us know what supplies you have. Based on responses received to date, there are almost 2000 buckets and lids circulating among our sites.  We have noted a mismatch in the number of clean buckets, lids, bottles, and boxes at certain sites. You may receive a follow-up note in the near future regarding these discrepancies. Thanks also to all who changed their collector lid seals and returned the old seals to the CAL.  We grade each seal returned to us based on the impression made by the bucket rim in the foam. Please contact us if your are concerned that your lid is not sealing tightly to the rim of both the wet and dry side buckets. Example photos from this year's returned lids are shown on the next page. The illustrate an "ideal" lid seal, and lid seals with issues. Remember: A good, clean collector lid seal leads to clean, quality samples!   http://nadp.sws.uiuc.edu/cal/ E-mail: cal@sws.uiuc.edu     Back to reminders

8/07 2006 Annual Summary and Maps: Enclosed is a copy of the 2006 Annual Summary produced by the NADP Program Office. This publication is available electronically at http://nadp.sws.uiuc.edu/lib/data/2006as.pdf. Additional maps (concentrations/deposition of magnesium, potassium, sodium, and chloride) are available at http://nadp.sws.uiuc.edu/isopleths/maps2006/. Animated sequences of sulfate, nitrate, and ammonium concentration and deposition changes since 1985  are available at http://nadp.sws.uiuc.edu/amaps2/. New Buckets: The CAL is evaluating new buckets that do not require spacers for proper positioning in the collector. We have tested these buckets at our IL11 site. You will start receiving these buckets in the next few months. Please contact us if you have any problems with these buckets in your collector such as lid seal alignment, clutch slippage, and unusual cycling. Reminder: You should periodically observe the position of the precipitation (bottom) pen on the Belfort recording raingage. When the pen position is too low (less than ½”), wind and other events can jar the Belfort raingage causing the precipitation pen to become “stuck” below the chart drum. We suggest that the precipitation pen baseline be set between the ½” and 1” mark. If you need information on adjusting the baseline of your raingage, please consult Appendix D of your NTN Site Operations Manual. The zero adjustment screw is shown on Page D-7. Please call 1-800-952-7353 if you have any questions or concerns.   http://nadp.sws.uiuc.edu/cal/ E-mail: cal@sws.uiuc.edu   Back to reminders 9/07 Preparing for Winter: September is the time to think about winterizing your site.  Enclosed is a memo with directions to winterize your raingage and service the collector backup power supply (if any) at your site. (If you have an electronic recording raingage, please follow the manufacturer’s instructions for winterization, or call the CAL.) Please fill out and return the blue winterizing questionnaire to the CAL by December 15th. For samples removed after winterization, check “Yes” in Block 4.4 of the FORF. Reminder: Missing Precipitation Types. Does it snow in Florida in July? Typically not, but we cannot assume the type of precipitation at your site. Please remember to completely fill in the precipitation type in Block 7 of the FORF: R if only rain occurred, S if only snow occurred, and M for any combinations, including sleet and freezing rain. Record hail as R and document its occurrence in Block 10. Circle U (unknown) for those instances when you do not know the precipitation type. Please call 1-800-952-7353 or email ntn@sws.uiuc.edu if you have any questions or concerns.   http://nadp.sws.uiuc.edu/cal/ E-mail: cal@sws.uiuc.edu   Back to reminders