By Marcel Severijnen
Within the Dutch climate debate chemist and scientific journalist Marcel Crok has the reputation of critical follower of the developments. He gained some international fame with his 2005 NWT article on the hockeystick affaire. Michael Mann’s method was criticised by McIntyre and McKitrick and by von Storch and Zorita. Crok explained in clear words how the affair developed and how this later symbol of the IPCC report should be valued. There exists a German translation of his still interesting article.
Last November Marcel Crok published a book “Staat van het klimaat”, on which he has worked a long time. The book was appraised, but critical notes were made too at the same time. The book is written in Dutch.
In the first chapter Crok answers the question whether (climate) science is settled. Although climategate has weakened the public acceptance of IPCC conclusions, scientists are not taken as seriously as before climategate, and the influence of weblogs is growing. Crok is right to include the blogosphere as part of the discussion and not to rely just on peer-reviewed literature. From a critical viewpoint he is convinced that science is not settled at all.
Chapter 2 describes the amount of warming, measured with strongly criticized networks, with a majority of stations not qualified for proper measurement, and the possible effect of urbanization. Most mainland stations are situated in urban environments and undergo the influence of neighboring buildings. So, according to Crok, possibly half of the measured warming could be attributed to urban effects.
In chapter 3 Crok wonders how unique the actual warming is in historic perspective. Naturally the hockeystick affair pops up here in all details. Chapters 4 and 5 deal with the question of carbondioxide being the sole cause for the warming, and concluding that there are more factors, including natural and other anthropogenic causes.
What makes this book so special? Crok is very exhaustive in dishing up details and pointing to a plethora of sources, and that makes it hard to access. He enlightens all possible points of discussion, and that deserves a great compliment. In the eyes of alarmists he will be seen as a skeptic, but it’s hard to rebound his elaborate studies. Alarmists, skeptics and critical followers of the climate debate, all are strongly advised to read this book.
In the international domain of climate science this book should be available to everyone, and to my opinion the book deserves an English translation.
The book was accompanied with a blog, where the follow-up of the publication is exposed: http://www.staatvanhetklimaat.nl/