Lei FAN
@LeiFan67778814
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Professor at Southwest University Member #SMOS-IC Vegetation optical depth (VOD), microwave remote sensing, Carbon cycle.
Southwest University, China
Joined February 2022
#Forest degradation became the largest process driving #carbon loss in #BrazilianAmazon, says recent study using - among other satellites -@ESA's #SMOS data. The upcoming #Biomass mission will provide crucial information on the state of our forests. More: https://t.co/62osSZPOI5
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Here's ecosystem net #carbon flux average seasonal cycle on the sphere... what I really like, we see intuitively the carbon "sink" when the biosphere is sucking carbon out of the atmosphere. Thanks to @tylermorganwall @mdsumner D.Murdoch @edzerpebesma R.Hijmans #RStats
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(5) In this study, Y. Feng and @SUSTechSZ colleagues took the huge task of reanalyzing #Landsat satellite images from 2001 to 2019 β
Change of forest area is consistently assessed over time using a stratified sample-based approach from recommendations of @globalforests
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We developed a new #Vegetation Condition Index from #Microwave #RemoteSensing: The Standardized Vegetation Optical Depth Index #SVODI
https://t.co/AnaVqDZM9x A valuable new dataset to study #drought impacts. @VanderSatNL @CLIMERS_GEO Example East Africa:
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Is Vegetation Optical Depth sensitive to biomass or moisture content? Answerππππ
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π₯π³ A new VOD is born π₯π³ @JWigneron @IPSL_outreach Yes, itβs possible to retrieve VOD from active sensors. Please see this paper by X. Liu et al. ASCAT IB: A radar-based vegetation optical depth retrieved from the ASCAT scatterometer satellite https://t.co/CjiSAc89pZ
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Dataset update: our MT-DCA soil moisture and vegetation optical depth (related to vegetation water content) retrievals from the SMAP satellite now have a citable DOI. Netcdf files at 9km and 36km grids freely available here:
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Forest degradation drives carbon loss in the Brazilian Amazon @esaclimate @IPSL_outreach @qinyw_OU @JWigneron @INRAE_France Great honor to see our work with SMOS satellite vegetation optical depth data highlighted on the European Space Agency web site https://t.co/tPBUyVD0Wg
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New research article: L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand
bg.copernicus.org
Abstract. Vegetation optical depth (VOD) retrieved from microwave radiometry correlates with the total amount of water in vegetation, based on theoretical and empirical evidence. Because the total...
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1/2 After several years in the pipeline, super excited to present some new work by former lab member Yaling Liu providing the first global estimate of physiological stress (hydraulic resistance) and rooting depth using Vegetation optical depth (VOD)
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There is still some work to estimate biomass from Vegetation optical depth (VOD)
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Excited to share our published new paper on estimating rooting depth and plant hydraulics from space using vegetation optical depth, led by former group member Yaling Liu https://t.co/cWyW54DEr8.
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Flux tower observations reveal that atmospheric dryness and soil dryness have contrasting impacts on vegetation @ZhengFu7 @ciais_philippe
https://t.co/RuZ8EB7pUC
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@maybeEcosystems @NaturePlants We'll know much better what's going on in the 2020s thanks to @GEDI_Knights (2019-) and @ESA_EO's BIOMASS (2021-), but for the 2010s things will never be that certain. I'd trust L-VOD more than the other methods available in this case, as its especially good for biomass CHANGE.
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And another superb release, here changes in carbon stocks of above-ground biomass using L-VOD calibrated with our @esaclimate CCI Biomass maps @AU_EarthObs @AU_DGES @ESA_EO @AberUni
We're thrilled to launch the Biomass Carbon Monitor with @kayrros @Carbon_Monitor @JWigneron @esaclimate @ESA_EO
https://t.co/eYhP5pn4pr
https://t.co/tibJxOgNV8 The Monitor provides public-access, comprehensive global maps of changes in carbon stocks of above-ground biomass.
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Great to see this paper out in @NaturePlants - L-VOD to look at the tropical carbon cycle since 2010. Finds its neutral, but with BIG + and - fluxes (3 PgC/yr)! I was a reviewer, always nice when the paper comes out so you can actually talk about it... https://t.co/fS7XKQSRGE
nature.com
Nature Plants - Tropical carbon stocks are essential for proper accounting of global carbon budgets, but difficult to monitor on a large scale. L-band microwave observations used here enable direct...
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