Editing Paleoclimatology (section)

====Sclerochronology====

;Corals (see also [[sclerochronology]])
Coral "rings<nowiki>''</nowiki> share similar evidence of growth to that of trees, and thus can be dated in similar ways. A primary difference is their environments and the conditions within those that they respond to. Examples of these conditions for coral include water temperature, freshwater influx, changes in pH, and wave disturbances. From there, specialized equipment, such as the Advanced Very High Resolution Radiometer (AVHRR) instrument, can be used to derive the [[sea surface temperature]] and water salinity from the past few centuries. The [[Δ18O|δ<sup>18</sup>O]] of [[Coralline algae|coralline]] red algae provides a useful proxy of the combined sea surface temperature and sea surface salinity at high latitudes and the tropics, where many traditional techniques are limited.<ref name=Geology2008>{{cite journal|last1=Halfar|first1=J.|year=2008|doi=10.1130/G24635A.1|title=Coralline red algae as high-resolution climate recorders|journal=Geology|volume=36|pages=463|last2=Steneck|first2=R.S.|last3=Joachimski|first3=M.|last4=Kronz|first4=A.|last5=Wanamaker|first5=A.D.|issue=6|bibcode=2008Geo....36..463H|s2cid=129376515 }}</ref><ref name=Cobb>{{cite journal|last1=Cobb|first1=K.|last2=Charles|first2=C. D.|last3=Cheng|first3=H|last4=Edwards|first4=R. L.|year=2003|title=El Nino/Southern Oscillation and tropical Pacific climate during the past millennium|journal=Nature|volume=424|issue=6946|pages=271–6|pmid=12867972|doi=10.1038/nature01779|bibcode=2003Natur.424..271C|s2cid=6088699}}</ref>