The average rise rate for the next 90 years must be how much greater than the rise rate of the last 10 years to achieve Hansen's estimate of a 15 foot rise?

rich 1.0 Polldaddy https://polldaddy.com The average rise rate for the next 90 years must be how much greater than the rise rate of the last 10 years to achieve Hansen's estimate of a 15 foot rise? <script>var pd_tags = new Array;pd_tags["838610-src"]="poll-oembed-simple";</script><script type="text/javascript" charset="utf-8" src="https://secure.polldaddy.com/p/838610.js"></script><noscript><iframe src="https://poll.fm/838610/embed" frameborder="0" class="cs-iframe-embed"></iframe></noscript>