NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sea level rise
From: Frank Reed CT
Date: 2006 Jul 8, 18:06 -0500
From: Frank Reed CT
Date: 2006 Jul 8, 18:06 -0500
"Just to clarify the statistics of linear trends. One can find a linear trend whenever a response variable is increasing or decreasing, even if there is statistically significant curvature in the line. " So you subtract the linear trend and then graph the residuals. If there is any quadratic or other non-linear trend of significance, you'll see it. If there's none visible, it's insignificant for the period covered. What you see o ver the 150 coverage at The Battery is some significant decades-long deviations but nothing with any obvious up/down trend. By the way, the RAW sea level records from the tide gauges are also available on that web site at least for recent decades. I've played with some of it myself just to convince myself that the graphs are reliable. -FER 42.0N 87.7W, or 41.4N 72.1W. www.HistoricalAtlas.com/lunars --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
