10kclimatechallenge
10kclimatechallenge
Are you the next great climate scientist? Awarding $10,000 for the proven reproducible rate of CO2 forcing. (Verified by the UN IPCC)
Temperature Questions
These are all the questions I found related to this topic in the 3000+ pages of IPCC AR4 and AR5.
The period after the last ice age is known as the Holocene, which started about 11,500 years ago.
The IPCC tells us during the Holocene the ice sheets melted as the climate warmed. However, there were still abrupt cold phases in particular the Younger Dryas and the 8.2 ka event. They state such abrupt cold phases were felt globally. See the ice core temperature data from GISP below. (AR4 Section 6.4.2.1 Page 455).
However, the cause of these events are in question.
One possibility comes from AR4 where the IPCC reports the 8.2ka event seen a large decrease in CH4 indicating the cause was large scale ocean circulation change from artic to tropics. They note an abrupt cooling between 2°C to 6°C. (AR4 Section 6.5.2 Page 463)
As you can see GISP (below) details many extreme temperature events in the last 11,500 years. However, these are the only two events I found the IPCC acknowledges. For the most part in AR4 and AR5 the IPCC downplays this data or ignores it.
Ice Core Temperature Data Since Last Ice Age
To the left is the GISP ice core temperature data from just the northern hemisphere or Greenland. GISP is the most studied ice core in the world.
Today is indicated on the far left where you will notice a small rise 5°C or so.
However, compare today to the last 10,000 years or so where it is clear the last 800 years have been one of the four abrupt cold periods seen. However, unlike the other three this one has lasted several 100 years.
Also, the norm in the past has been much higher temperatures with far more drastic temperature changes than seen today. The temperatures of the past have average about 1.5°C higher than today.
Today’s long cooling period has lasted over 800 years or so appearing to be very unusual compared to the last 11,000 years.
One important question is why hasn’t the temperature naturally went back up like so many times before?
What caused those past temperature increases? The IPCC does little to address.
Temperatures since the Last Ice Age - Above
So Many Temperature Questions.
Next, we will look at the Medieval Warming where there are important questions with interpreting the data
For example, the IPCC tells us as times goes on the data is sparser or lacking after a 1000 or so years.
In the case of past tree ring data were sizes influenced by changes in temperature, moisture, ph., or maybe something else? (AR5 Section 10.7 Page 917)
The Questions Chapter
Over 150 climate questions from AR4/AR5.
Questions and more questions.
This section highlights all the important climate questions described in the UN’s IPCC assessment reports, AR4 and AR5. AR6 is coming soon!
AR4 and AR5 make up the most complete and current climate information out there, a road map for future generations. However, they are not the easiest reads because information on any particular subject is found throughout the 3000+ pages of these reports.
You make think over time there would be less questions as the climate gets figured out, but from AR4 to AR5 the number of question and material increased by several fold.
One reason for this increase in climate questions from AR4 to AR5 is the fact many predictions made in AR4 were missed, and things have been learned.
The IPCC examines most of these in more detail throughout AR5 using AR4 as a base for the science.
Inspiring the next generation
You might be on the same path?
Sharing what I have learned in my 35 years of being a “climate activist”.
Be an informed climate activist or maybe even the next great scientist.
AR4 and AR5 are road maps for the next generation of climate scientists.
I am awarding $10,000 for the proven rate of CO2 forcing to the next great scientist of our time.
Review of the IPCC AR4 and AR5
Collection of 9200 peer-reviewed climate studies. This is the science with 100s of questions, contradictions, missed predictions, areas lacking data, and more.
Following the Science
Become an informed climate activist!
10kclimatechallange
All the Chapters
My Personal Climate Journey.
35 years and counting. You may be on the same journey.
Review of IPCC AR4 and AR5
Why AR4 and AR5 are so important.
Theory Chapter
Breaks down CO2 forcing and why models are important.
Temperature Chapter
What is warming? Entire earth? Oceans? Surface? What to know.
Model Chapter
Why use models? How are they doing?
Ocean Chapter
Role of the world's oceans that stores over 90% of Earth's heat.
Atmosphere Chapter
Is the atmosphere cooling or warming the earth?
Gases Chapter
Focus on CO2 and other greenhouse gases.
Civilization Chapter
Looking at past climate change affect on previous civilizations.
Question Chapter - ON LINE
Summary of every important question I found in AR4/AR5. More than 150 of them.
Prediction Chapter
Summary of every important prediction I found in AR4/AR5.
What is the IPCC?
UN’s IPCC Assessment Reports 4 and 5 (AR4 2007 and AR5 2014). These UN reports include over 600 authors from 32 different countries assessing 9,200 peer-reviewed studies so they are the all-inclusive on the current state of climate science putting out new reports every seven or so years.
AR5 explains the United Nation’s IPCC was created in 1988 to provide world governments with “clear information on the state of today’s climate science as well as potential impacts, and options for adaptation and migration based on regular assessments”. (AR5 Section 1.2.1 page 123)
Weather versus Climate
Is the weather or the climate easier to predict?
