We are even getting intriguing suggestions of low frequency climate variability from satellites. (judithcurry.com)
Emphasizing perhaps and if in my discussion of climate shifts is pretty thin grounds on which to dispute low frequency climate regimes that have been observed in proxies for a 1000 years. (judithcurry.com)
Although representing a much more restricted spatial coverage than the other series, the last of these (also processed to maintain low - frequency climate information) is included here because of its extended length and because it suggests relatively cooler summer temperatures (at least across northern Eurasia) before A.D. 1000. (deepclimate.org)