Report for: Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia

Title	Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia
Published in	Proceedings of the National Academy of Sciences of the United States of America, September 2008
DOI	10.1073/pnas.0805721105
Pubmed ID	18765811
Authors	Michael E. Mann, Zhihua Zhang, Malcolm K. Hughes, Raymond S. Bradley, Sonya K. Miller, Scott Rutherford, Fenbiao Ni

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Twitter Demographics

The data shown below were collected from the profiles of 87 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Geographical breakdown

Country	Count	As %
United States	15	17%
Germany	6	7%
United Kingdom	5	6%
Sweden	3	3%
Japan	2	2%
Canada	2	2%
France	2	2%
New Zealand	1	1%
Australia	1	1%
Other	3	3%
Unknown	47	54%

Demographic breakdown

Type	Count	As %
Members of the public	71	82%
Scientists	13	15%
Science communicators (journalists, bloggers, editors)	2	2%
Practitioners (doctors, other healthcare professionals)	1	1%

Mendeley readers

The data shown below were compiled from readership statistics for 996 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country	Count	As %
United States	33	3%
Germany	10	1%
Canada	7	<1%
United Kingdom	4	<1%
Australia	4	<1%
South Africa	4	<1%
Spain	3	<1%
Japan	3	<1%
Brazil	3	<1%
Other	20	2%
Unknown	905	91%

Demographic breakdown

Readers by professional status	Count	As %
Researcher	251	25%
Student > Ph. D. Student	188	19%
Student > Master	116	12%
Student > Bachelor	77	8%
Professor	66	7%
Other	187	19%
Unknown	111	11%

Readers by discipline	Count	As %
Earth and Planetary Sciences	362	36%
Environmental Science	196	20%
Agricultural and Biological Sciences	106	11%
Engineering	31	3%
Social Sciences	31	3%
Other	126	13%
Unknown	144	14%

Attention Score in Context

This research output has an Altmetric Attention Score of 321. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 29 March 2023.

All research outputs

#91,115

of 23,454,152 outputs

Outputs from Proceedings of the National Academy of Sciences of the United States of America

#2,068

of 99,471 outputs

Outputs of similar age

#153

of 88,611 outputs

Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America

of 702 outputs

Altmetric has tracked 23,454,152 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.

So far Altmetric has tracked 99,471 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 37.6. This one has done particularly well, scoring higher than 97% of its peers.

Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 88,611 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.

We're also able to compare this research output to 702 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.

Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia

About this Attention Score

Mentioned by

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Twitter Demographics

Geographical breakdown

Demographic breakdown

Mendeley readers

Geographical breakdown

Demographic breakdown

Attention Score in Context