noaa-recon-15070
Upper Klamath River Basin 1000 Year Precipitation Reconstructions
Malevich, S.B.; Woodhouse, C.A.; Meko, D.M.
Upper Klamath River Basin 1000 Year Precipitation Reconstructions
2013-09-13
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/15070
Investigator
S.B.
Malevich
Investigator
C.A.
Woodhouse
Investigator
D.M.
Meko
earth science
paleoclimate
climate reconstructions|tree ring
age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null
earth science
paleoclimate
climate reconstructions|tree ring
precipitation,null,null,centimeter,Oct-Sep,climate reconstructions|tree ring,null,null,N,3 chronology predictors
earth science
paleoclimate
climate reconstructions|tree ring
precipitation,null,null,centimeter,Oct-Sep,climate reconstructions|tree ring,null,null,N,17 chronology predictors
earth science
paleoclimate
instrumental
precipitation,null,null,centimeter,Oct-Sep,instrumental,null,null,N,null
earth science
paleoclimate
reconstructions
precipitation
geoscientificInformation
Precipitation Reconstruction
hydrology
precipitation
1000 AD
2010 AD
950 cal yr BP
-60 cal yr BP
Complete
42.2008
42.2008
-121.7814
-121.7814
1249
1249
Continent
North America
United States Of America
Oregon
Klamath Falls>LATITUDE 42.2008>LONGITUDE -121.7814
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Steven B. Malevich, Connie A. Woodhouse, and David M. Meko. 2013. Tree-ring reconstructed hydroclimate of the Upper Klamath basin. Journal of Hydrology, Vol. 495, pp. 13-22, 12 July 2013. DOI: 10.1016/j.jhydrol.2013.04.048
This work presents the first tree-ring reconstructions of hydroclimate for the Upper Klamath River basin, which stretches from northern California into southern Oregon. The extended record provides a centuries-long perspective on the region’s hydroclimatic variability and context for water-related political issues that have erupted in recent years. Reconstructions of water-year precipitation for Klamath Falls, Oregon (extending 1564-2004 and 1000-2010 CE) were developed to compare past drought severity with drought severity of the instrumental record (extending 1896-2011). The reconstructions suggest that variability exhibited during the instrumental period captures extremes of moderate-to-long-duration (6-, 10-, and 20-year) droughts, but not of short (single-year and 3-year) and very long (50-year) droughts, which were more severe during the 11th-13th centuries. The late-16th-century “mega drought” is present in the Klamath River basin, though with less strength than in the neighboring Sacramento River basin. Cool-season storm tracks appear to be a direct driver of hydroclimatic variability, leading to instances of see-saw like relationships with neighboring regions, such as in the mid-14th century. In contrast, the larger area of drought in the 12th century is suggestive of a long-term northward shift in cool-season storm tracks.
STUDY NOTES: Updated reconstructed water year (WY; October-September) Klamath Falls precipitation (cm yr^-1).
The reconstructions archived here are updated versions of those used in Malevich et al. 2013.
(There were some weakly dated series that were unintentionally included in the original - the resulting changes are minor).
Klamath Falls, Oregon water-year precipitation is adopted as a proxy for Upper Klamath basin streamflow and hydroclimate.
Klamath Falls precipitation was reconstructed using stepwise multiple linear regression. Two models were created.
One model, "kfalls1", was trained using the entire available pool of chronology predictors, whose common time period
is 1600-2003. A second model, "kfalls2", was trained with three chronologies whose common period is 1000-2010.
In this manner, one model emphasizes predictive performance (larger and presumably more robust predictor set)
while the other model emphasizes length of reconstruction.
Updated tree ring chronologies utilized in this study are included in the International Tree Ring Data Bank (ITRDB):
http://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring
The ITRDB codes are CA674-CA679 and OR092-OR095.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/klamath2013precip.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11