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by jmartrican 965 days ago
Who is correct?
2 comments
HPsquared 965 days ago
Corollary: Is their correctness mutually exclusive?
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relaxing 965 days ago
Unfortunately this Nature article (https://www.nature.com/articles/s41893-019-0220-7 ) is behind a paywall, but the NASA summary implies they measured "leaf area".

The Science article (https://www.science.org/doi/10.1126/sciadv.aax1396 ) claims Leaf Area Index (same or different measure than the Nature study?) "exhibited a transition from increasing trends before the late 1990s to decreasing trends afterward".

So at first blush yes, but the details will doubtlessly prove otherwise.

If anyone has an institutional login and can post a pdf, please do.

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ylere 965 days ago
https://sci-hub.se/https://www.nature.com/articles/s41893-01...
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relaxing 965 days ago
Thank you.

So. Science Paper (SP) uses data from 2 spaceborne sensors, MODIS and AVHRR.

Nature Paper (NP) uses data from AVHRR alongside 3 other metrics: GLASS, GLOBMAP, and TCDR, all of which claim to be fusions of the same data from MODIS and AVHRR. (https://www.mdpi.com/2072-4292/8/3/263 ... https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/201... ... https://zenodo.org/records/4700264 )

NP supplementals show the data from AVHRR does trend upwards to the present data (agreeing with SP), but the other 3 metrics are trending flat (GLASS, TCDR) or downward (GLOBMAP).

I have neither the expertise nor inclination to delve further into the various methodologies of creating these various Leaf Area Indices.

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itishappy 965 days ago
Full text available for free here:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6376198/

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NoMoreNicksLeft 965 days ago
Which will persuade people to believe in the correct narrative, and to disbelieve in the incorrect narrative?
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rjbwork 965 days ago
What is the correct narrative? What is the incorrect narrative?
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