date: Thu, 03 Apr 2003 13:29 -0500 from: GRLOnline@agu.org subject: 2003GL017425 Request to Review from Geophysical Research Letters to: K.Briffa@uea.ac.uk Dear Dr. Briffa: Would you be willing and available to review "A 2,326-year tree-ring record of climate variability on the northeastern Qinghai-Tibetan Plateau" by Qi-Bin Zhang, Guodong Cheng, Tandong Yao, Xingcheng Kang, submitted for possible publication in the Geophysical Research Letters. The manuscript's abstract is: The climate on the Qinghai-Tibetan Plateau is sensitive to global changes. High-resolution climate proxy records covering the last two millennia in this region are scarce yet essential to evaluation of the patterns, synchroneity and spatial extent of past climatic changes including those in the Medieval Warm Period (MWP) and the Little Ice Age (LIA). Here we present a 2326-year tree-ring record of spring precipitation for Dulan area of northeastern Qinghai-Tibetan Plateau. We find that a moist interval spanning A.D. 929-1031 occurs in the MWP, with the peak occurring around A.D. 974. Signals associated with the LIA are also recorded in the tree rings. The greatest change during the last two millennia seems to occur in the second half of the 4th century. Our tree-ring data will facilitate intercontinental comparisons of large-scale synoptic climate variability for the last two millennia. If you agree to review this manuscript, I would ask for your comments within 14 days from your acceptance. To ACCEPT, click on the link below: If you are unable to review this manuscript at this time, I would appreciate any suggestions of other potential reviewers who would be qualified to examine this manuscript. (Via reply e-mail.) To DECLINE, click on the link below: If you have any questions or need more information feel free to reply to this e-mail. Thank you for your consideration and support of Geophysical Research Letters. Sincerely, James Famiglietti Associate Editor Geophysical Research Letters