Mapping methane concentrations from a controlled release experiment using the next generation airborne visible/infrared imaging spectrometer (AVIRIS-NG)

We describe advanced spectral and radiometric calibration techniques developed for NASA’s Next Generation Airborne Visible Infrared Imaging Spectrometer (AVIRIS-NG). By employing both statistically rigorous analysis and utilizing in situ data to inform calibration procedures and parameter estimation, we can dramatically reduce undesirable artifacts and minimize uncertainties of calibration parameters notoriously difficult to characterize in the laboratory. We describe a novel approach for destriping imaging spectrometer data through minimizing a Markov Random Field model. We then detail statistical methodology for bad pixel correction of the instrument, followed by the laboratory and field protocols involved in the corrections and evaluate their effectiveness on historical data. Finally, we review the geometric processing procedure used in production of the radiometrically calibrated image data.

Download Full-text

Methane Mapping with Future Satellite Imaging Spectrometers

Remote Sensing ◽

10.3390/rs11243054 ◽

2019 ◽

Vol 11 (24) ◽

pp. 3054 ◽

Cited By ~ 2

Author(s):

Alana K. Ayasse ◽

Philip E. Dennison ◽

Markus Foote ◽

Andrew K. Thorpe ◽

Sarang Joshi ◽

...

Keyword(s):

Spatial Resolution ◽

Infrared Imaging ◽

Matched Filter ◽

Signal To Noise Ratio ◽

Point Sources ◽

Anthropogenic Sources ◽

Next Generation ◽

Imaging Spectrometer ◽

Satellite Imaging ◽

Shortwave Infrared

This study evaluates a new generation of satellite imaging spectrometers to measure point source methane emissions from anthropogenic sources. We used the Airborne Visible and Infrared Imaging Spectrometer Next Generation(AVIRIS-NG) images with known methane plumes to create two simulated satellite products. One simulation had a 30 m spatial resolution with ~200 Signal-to-Noise Ratio (SNR) in the Shortwave Infrared (SWIR) and the other had a 60 m spatial resolution with ~400 SNR in the SWIR; both products had a 7.5 nm spectral spacing. We applied a linear matched filter with a sparsity prior and an albedo correction to detect and quantify the methane emission in the original AVIRIS-NG images and in both satellite simulations. We also calculated an emission flux for all images. We found that all methane plumes were detectable in all satellite simulations. The flux calculations for the simulated satellite images correlated well with the calculated flux for the original AVIRIS-NG images. We also found that coarsening spatial resolution had the largest impact on the sensitivity of the results. These results suggest that methane detection and quantification of point sources will be possible with the next generation of satellite imaging spectrometers.

Download Full-text

Evaluating the effects of surface properties on methane retrievals using a synthetic airborne visible/infrared imaging spectrometer next generation (AVIRIS-NG) image

Remote Sensing of Environment ◽

10.1016/j.rse.2018.06.018 ◽

2018 ◽

Vol 215 ◽

pp. 386-397 ◽

Cited By ~ 9

Author(s):

Alana K. Ayasse ◽

Andrew K. Thorpe ◽

Dar A. Roberts ◽

Christopher C. Funk ◽

Philip E. Dennison ◽

...

Keyword(s):

Surface Properties ◽

Infrared Imaging ◽

Next Generation ◽

Imaging Spectrometer

Download Full-text

Satellite Observations of Isoprene from the Thermal Infrared Imaging Spectrometer: from Cross-track Infrared Sounder towards a Next Generation of Global Observing System

Light, Energy and the Environment 2018 (E2, FTS, HISE, SOLAR, SSL) ◽

10.1364/fts.2018.jw4b.1 ◽

2018 ◽

Author(s):

Dejian Fu ◽

Dylan B. Millet ◽

Kelley C. Wells ◽

Vivienne Payne ◽

Shanshan Yu ◽

...

Keyword(s):

Infrared Imaging ◽

Thermal Infrared ◽

Satellite Observations ◽

Next Generation ◽

Imaging Spectrometer ◽

Thermal Infrared Imaging ◽

Cross Track

Download Full-text

3D: The next generation near-infrared imaging spectrometer

Astronomy and Astrophysics Supplement Series ◽

10.1051/aas:1996266 ◽

1996 ◽

Vol 119 (3) ◽

pp. 531-546 ◽

Cited By ~ 84

Author(s):

L. Weitzel ◽

A. Krabbe ◽

H. Kroker ◽

N. Thatte ◽

L. E. Tacconi-Garman ◽

...

Keyword(s):

Near Infrared ◽

Infrared Imaging ◽

Next Generation ◽

Near Infrared Imaging ◽

Imaging Spectrometer

Download Full-text

Potential of next-generation imaging spectrometers to detect and quantify methane point sources from space

Atmospheric Measurement Techniques ◽

10.5194/amt-12-5655-2019 ◽

2019 ◽

Vol 12 (10) ◽

pp. 5655-5668 ◽

Cited By ~ 8

Author(s):

Daniel H. Cusworth ◽

Daniel J. Jacob ◽

Daniel J. Varon ◽

Christopher Chan Miller ◽

Xiong Liu ◽

...

Keyword(s):

Spectral Resolution ◽

Infrared Imaging ◽

Signal To Noise Ratio ◽

Optimal Estimation ◽

Estimation Algorithm ◽

Point Sources ◽

Atmospheric Methane ◽

Next Generation ◽

Pixel Resolution ◽

Imaging Spectrometer

Abstract. We examine the potential for global detection of methane plumes from individual point sources with the new generation of spaceborne imaging spectrometers (EnMAP, PRISMA, EMIT, SBG, CHIME) scheduled for launch in 2019–2025. These instruments are designed to map the Earth's surface at high spatial resolution (30 m×30 m) and have a spectral resolution of 7–10 nm in the 2200–2400 nm band that should also allow useful detection of atmospheric methane. We simulate scenes viewed by EnMAP (10 nm spectral resolution, 180 signal-to-noise ratio) using the EnMAP end-to-end simulation tool with superimposed methane plumes generated by large-eddy simulations. We retrieve atmospheric methane and surface reflectivity for these scenes using the IMAP-DOAS optimal estimation algorithm. We find an EnMAP precision of 3 %–7 % for atmospheric methane depending on surface type. This allows effective single-pass detection of methane point sources as small as 100 kg h−1 depending on surface brightness, surface homogeneity, and wind speed. Successful retrievals over very heterogeneous surfaces such as an urban mosaic require finer spectral resolution. We tested the EnMAP capability with actual plume observations over oil/gas fields in California from the Airborne Visible/Infrared Imaging Spectrometer – Next Generation (AVIRIS-NG) sensor (3 m×3 m pixel resolution, 5 nm spectral resolution, SNR 200–400), by spectrally and spatially downsampling the AVIRIS-NG data to match EnMAP instrument specifications. Results confirm that EnMAP can successfully detect point sources of ∼100 kg h−1 over bright surfaces. Source rates inferred with a generic integrated mass enhancement (IME) algorithm were lower for EnMAP than for AVIRIS-NG. Better agreement may be achieved with a more customized IME algorithm. Our results suggest that imaging spectrometers in space could play an important role in the future for quantifying methane emissions from point sources worldwide.

Download Full-text

The CO2CRC Otway Shallow CO2 Controlled Release Experiment: Geological Model and CO2 Migration Simulations

SSRN Electronic Journal ◽

10.2139/ssrn.3365843 ◽

2019 ◽

Author(s):

Andrew Feitz ◽

Bruce Radke ◽

Md. Shahadat Hossain ◽

Brett Harris ◽

Ralf Schaa ◽

...

Keyword(s):

Controlled Release ◽

Geological Model ◽

Release Experiment

Download Full-text

The short life of the volcanic island New Late’iki (Tonga) analyzed by multi-sensor remote sensing data

Scientific Reports ◽

10.1038/s41598-020-79261-7 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Simon Plank ◽

Francesco Marchese ◽

Nicola Genzano ◽

Michael Nolde ◽

Sandro Martinis

Keyword(s):

Infrared Imaging ◽

Rapid Change ◽

Monitoring Network ◽

Remote Sensing Data ◽

Volcanic Island ◽

Imaging Spectrometer ◽

Remote Areas ◽

Moderate Resolution ◽

Satellite Sensors ◽

Resolution Imaging

AbstractSatellite-based Earth observation plays a key role for monitoring volcanoes, especially those which are located in remote areas and which very often are not observed by a terrestrial monitoring network. In our study we jointly analyzed data from thermal (Moderate Resolution Imaging Spectrometer MODIS and Visible Infrared Imaging Radiometer Suite VIIRS), optical (Operational Land Imager and Multispectral Instrument) and synthetic aperture radar (SAR) (Sentinel-1 and TerraSAR-X) satellite sensors to investigate the mid-October 2019 surtseyan eruption at Late’iki Volcano, located on the Tonga Volcanic Arc. During the eruption, the remains of an older volcanic island formed in 1995 collapsed and a new volcanic island, called New Late’iki was formed. After the 12 days long lasting eruption, we observed a rapid change of the island’s shape and size, and an erosion of this newly formed volcanic island, which was reclaimed by the ocean two months after the eruption ceased. This fast erosion of New Late’iki Island is in strong contrast to the over 25 years long survival of the volcanic island formed in 1995.

Download Full-text