There have been a number of developments on the Amazin Amazon Press Release front. Real Climate has a reply from Scott Saleska to Samanta, et al, in which Saleska clearly shows that Samata, et al's data for the short, but intense 2005 Amazon drought matches the greening that Saleska, et al. found in 2007. This getting deep down and dirty, the principals, Ranga Myneni and his student Samanta jumped the land shark here. First we had the "inventitive" quote they manufactured from Jose Marengo, which disappeared after Tim Lambert wrote to Dr. Marengo, and got a never said THAT from him.
One of the commenters at Real Climate, has found a post, flacking the paper apparently from the good Prof. Myneni. And where, the bunnies ask, did this gem show up? On Sean Hannity's web site forum. For outlanders, Hannity is one of Rupert Murdoch's hired hands, makes Chris Monckton look sane and liberal. And what appeared under Myneni's name??
An article published yesterday (March 4, 2010) in the scientific journal Geophysical Research Letters (GRL), the authors report that Amazon forests did not green-up during the 2005 drought, contrary to a 2007 report published in the prestigious journal Science and the IPCC claims about these forest response to precipitation declines. This article corrects much of the mis-information regarding the drought sensitivity of this important biome. The abstract of our article is shown below. I hope you will find this article interesting enough to write about it and/or help disseminate the news. If you wish to talk to us about this article, please contact the first author, Arindam -[UPDATE: Eli acknowledges that posting in anothers name is easy on forums, which raises the point of who done it. Emails have been dispatched, but truly evil thoughts are forming. In the spirit of uninhibited bs (blog stuff) the choice appears to be between a rogue grad student, a professor in the early stages of very emeritus, or a public information officer looking for a job with Fox news - place your bets]
The sensitivity of Amazon rainforests to dry‐season droughts is still poorly understood, with reports of enhanced tree mortality and forest fires on one hand, and excessive forest greening on the other. Here, we report that the previous results of large-scale greening of the Amazon, obtained from an earlier version of satellite-derived vegetation greenness data - Collection 4 (C4) Enhanced Vegetation Index (EVI), are irreproducible, with both this earlier version as well as the improved, current version (C5), owing to inclusion of atmosphere-corrupted data in those results. We find no evidence of large-scale greening of intact Amazon forests during the 2005 drought - approximately 11%-12% of these drought-stricken forests display greening, while, 28%-20% show browning or no-change, and for the rest, the data are not of sufficient quality to characterize any changes. These changes are also not unique - approximately similar changes are observed in non-drought years as well. Changes in surface solar irradiance are contrary to the speculation in the previously published report of enhanced sunlight availability during the 2005 drought. There was no co-relation between drought severity and greenness changes, which is contrary to the idea of drought-induced greening. Thus, we conclude that Amazon forests did not green-up during the 2005 drought.
As Saleska points out, Samanta, et al. are playing a bit of three card monte here. The total amount of the forest imaged well enough to make a determination of browner, greener or no change was about 34%, which was composed of ~10% greener, 4% browner and 20% about the same, ie, greener was ~2.5 times more likely than browner. Added: To make this all even tastier, Saleska and Myneni were co-authors on a 2006 paper "Amazon rainforests green-up with sunlight in dry season" Fee, fie, foo fiddle-de-de, Eli smells some jealousy.
Stay tuned. Ms. Rabett has sent out for huge supplies of popcorn.
And oh yes, for your guide to all that is Samantagate, Deltoid