The ECOSTRESS spectral library version 1.0

Meerdink, Susan; Hook, Simon J.; Roberts, Dar A.; Abbott, Elsa A.

doi:10.1016/j.rse.2019.05.015

Cited by 253 publications

(162 citation statements)

References 58 publications

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“…(a) spectra for gray/buff samples from 0.35 to 2.5 µm showing several features due to H 2 O, OH, NH 4 , and sulfate in these samples, (b) spectra from 1.3-2.5 µm including also NH 4 -bearing minerals. Vertical lines mark features due to minerals or species in these samples: dotted lines at 1.41 and 1.91 µm due to bound H 2 O in clays (Bishop et al, 1994) or zeolite (e.g., clinoptilolite, USGS spectral library, Clark et al, 1990), dashed lines at 1.45-1.48 and 1.94-1.97 µm due to H 2 O in hydrated sulfates such as hexahydrite (e.g., Bishop et al, 2009) or tschermigite (speclib.jpl.nasa.gov/library; Meerdink et al, 2019), solid lines at 1.56, 2.01 and 2.11 µm due to NH 4 + in minerals (e.g., Bishop et al, 2002;Berg et al, 2016), yellow solid lines at 1.47 and 2.26 µm due to Fe-OH in jarosite (Bishop and Murad, 2005), broken lines at 2.17 and 2.21 µm due to Al-OH in alunite (Bishop and Murad, 2005) and montmorillonite (e.g., Bishop et al, 2008), respectively. This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.…”

Section: Figure Captionsmentioning

confidence: 99%

Targeting mixtures of jarosite and clay minerals for Mars exploration

Hinman

Bishop

Gulick

et al. 2021

American Mineralogist

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Section: Figure Captionsmentioning

confidence: 99%

Targeting mixtures of jarosite and clay minerals for Mars exploration

Hinman

Bishop

Gulick

et al. 2021

American Mineralogist

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“…The surface reflectance for Sentinel-2 pixels classified as vegetation are scaled by a factor 0.82 in order to account for the generally lower reflectance by vegetation in the SWIR-2 window compared to Sentinel-2's band 12. 25 The scaling factor has been derived using spectral reflectance data from the ECOSTRESS spectral library (Baldridge et al, 2009;Meerdink et al). Figure 8b shows the gridded surface reflectance data for Indianapolis together with a corresponding RGB composite (Fig.…”

Section: Surface Albedo Data From Sentinel-2 15mentioning

confidence: 99%

Towards space-borne monitoring of localized CO<sub>2</sub> emissions: an instrument concept and first performance assessment

Strandgren¹,

Krutz²,

Wilzewski³

et al. 2020

Preprint

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Abstract. The UNFCCC (United Nations Framework Convention on Climate Change) requires the nations of the world to report their carbon dioxide (CO2) emissions. Independent verification of these reported emissions is a corner stone for advancing towards emission accounting and reduction measures agreed upon in the Paris agreement. In this paper, we present the concept and first performance assessment of a compact space-borne imaging spectrometer that could support the task of "monitoring, verification, reporting" (MVR) of CO2 emissions worldwide. With a single spectral window in the short-wave infrared spectral region and a spatial resolution of 50 x 50 m2, the goal is to reliably estimate the CO2 emissions from localized sources down to a source strength of approx. 1 MtCO2 yr-1, hence complementing other planned CO2 monitoring missions, like the planned European Carbon Constellation (CO2M). Resolving CO2 plumes also from medium-sized power plants (1–10 MtCO2 yr-1) is of key importance for independent quantification of CO2 emissions from the coal-fired power plant sector. Through radiative transfer simulations, including a realistic instrument noise model and a global trial ensemble covering various geophysical scenarios, it is shown that an instrument noise error of 1.1 ppm (1σ) can be achieved for the retrieval of the column-averaged dry-air mole fraction of CO2 (XCO2). Despite limited amount of information from a single spectral window and a relatively coarse spectral resolution, scattering by atmospheric aerosol and cirrus can be partly accounted for in the XCO2 retrieval, with deviations of at most 4.0 ppm from the true abundance for 68 % of the scenes in the global trial ensemble. We further simulate the ability of the proposed instrument concept to observe CO2 plumes from single power plants in an urban area using high-resolution CO2 emission and surface albedo data for the city of Indianapolis. Given the preliminary instrument design and the corresponding instrument noise error, emission plumes from point sources with an emission rate down to the order of 0.3 MtCO2 yr-1 can be resolved, i.e. well below the target source strength of 1 MtCO2 yr-1. Hence, the proposed instrument concept could be able to resolve and quantify the CO2 plumes from localized point sources responsible for approx. 90 % of the power plant CO2 emission budget, assuming global coverage through a fleet of sensors and favorable conditions with respect to illumination and particle scattering.

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“…We used the point value corresponding with the coordinates for the site (Table 1), the data is provided at 70 m spatial resolution. ESI is evapotranspiration/potential evapotranspiration and is a local short-term measure of water deficit for plants (Meerdink et al 2019), whereas aridity is a measure of overall climate.…”

Section: Site Descriptionmentioning

confidence: 99%

The shrubEphedra californicafacilitates arthropod communities along a regional desert climatic gradient

Braun

Westphal

Lortie

2020

Preprint

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Arthropods underpin arid community dynamics and provide many key ecosystem services. In arid ecosystems, the key habitat components that influence arthropod community structure are relatively understudied. Ephedra californica is a common and widespread shrub with established positive effects on plant and vertebrate animal communities within the drylands of Southern California. The capacity for these positive effects to further support arthropod communities has not been examined. We tested the hypothesis that the physical structure and cover vegetation enhances key measures of arthropod community assembly at nine Californian desert sites that comprise an extensive regional aridity gradient. We contrasted the effects of shrub canopies with ground-covering vegetation on structuring ground-active arthropod communities by surveying ground-active arthropods with pitfall traps and collecting vegetation on the soil surface in the form of residual dry matter (RDM). We collected a total of 5868 individual arthropod specimens for a total of 184 morphospecies. Arthropod abundance and morphospecies richness and RDM biomass and cover were significantly greater beneath the canopy of E. californica throughout the region. Total biomass of RDM did not significantly influence arthropod communities, but cover of RDM on the soil surface negatively influenced arthropod abundance. Neither climatic aridity nor downscaled evaporative stress estimates were significant mediators of the arthropodvegetation association patterns. Vegetation thus likely has direct and indirect physical effects on arthropod communities. These canopy versus soil surface vegetation differences will refine sampling of fine-scale patterns of arthropod diversity in drylands. Regional land managers can support arthropod diversity by maintaining populations of foundation shrub species such as E. californica.

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The ECOSTRESS spectral library version 1.0

Cited by 253 publications

References 58 publications

Targeting mixtures of jarosite and clay minerals for Mars exploration

Targeting mixtures of jarosite and clay minerals for Mars exploration

Towards space-borne monitoring of localized CO<sub>2</sub> emissions: an instrument concept and first performance assessment

The shrubEphedra californicafacilitates arthropod communities along a regional desert climatic gradient

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The ECOSTRESS spectral library version 1.0

Cited by 253 publications

References 58 publications

Targeting mixtures of jarosite and clay minerals for Mars exploration

Targeting mixtures of jarosite and clay minerals for Mars exploration

Towards space-borne monitoring of localized CO&lt;sub&gt;2&lt;/sub&gt; emissions: an instrument concept and first performance assessment

The shrubEphedra californicafacilitates arthropod communities along a regional desert climatic gradient

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Towards space-borne monitoring of localized CO<sub>2</sub> emissions: an instrument concept and first performance assessment