Suomi NPP OMPS limb profiler initial sensor performance assessment

Jaross, Glen; Chen, Grace; Kowitt, Mark; Warner, J.; Xu, Philippe; Kelly, Thomas J.; Linda, M.; Flittner, D. E.

doi:10.1117/12.979627

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…OMPS LP splits each vertical profile into two images: low altitude (bright) signals are measured with the small aperture, whereas the high altitude (low intensity) signals are measured with the large aperture. Measurements at short and long integration times are interleaved over the nominal 19 s measurement duration (Jaross et al, 2012). All six spectra (three slits and two apertures) are captured onto a single focal plane.…”

Section: The Ozone Mapping and Profiler Suite (Omps)mentioning

confidence: 99%

Measuring the Antarctic ozone hole with the new Ozone Mapping and Profiler Suite (OMPS)

et al. 2014

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Section: The Ozone Mapping and Profiler Suite (Omps)mentioning

confidence: 99%

Measuring the Antarctic ozone hole with the new Ozone Mapping and Profiler Suite (OMPS)

et al. 2014

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“…Of the three, this paper uses the data from the downward looking spatial mapper OMPS-NM at 380±0.55 nm. The OMPS-NM side-to-side looking nadir mapper spectrometer (side-swath of 2000 km) has a spectral range of 300 to 380 nm with a spectral resolution of 1.1 nm and a nadir spatial resolution of 50 x 50 km 2 (Jaross et al, 2012;McPeters et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Measurement Report: Observed Increase in Southern Hemisphere Reflected Energy from Clouds During December 2020 and 2021

Herman

Huang²,

Haffner³

et al. 2022

Preprint

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Abstract. Measured backscattered UV radiances at 388±1.5 nm are converted to Lambert Equivalent Reflectivity (LER) are from EPIC (Earth Polychromatic Imaging Camera) onboard the DSCOVR spacecraft (Deep Space Climate Observatory) orbiting about the Sun-Earth Lagrange-1 (L1) gravitational balance point. The average percent of reflected solar energy in the 388±1.5 nm band is 29.2 % of the global incident solar energy in that band. Maximum reflected 388 nm solar energy RSE, mostly from clouds, occurs during the summer solstice in each hemisphere, December in the Southern Hemisphere SH and June in the Northern Hemisphere NH. The global average RSE (90° S to 90° N) has a maximum in December and a minimum in June showing that the SH cloud reflected energy is greater than that in the NH. Backscattering from land and oceans at 388 nm is small since the average clear-sky reflectivity of the Earth’s surface free of snow and ice is about 0.05. Calculations of RSE based on the 388 nm LER show a 7 % increase during December 2020 in RSE at 40° S to 50° S when the backscattering angle BA was 178.05°, and 6 % at 30° S to 40° S in November 2021 when BA = 177.5° compared to previous years, 2015–2019, with a smaller BA. Comparison of 380 nm RSE at 40° S to 50° S during December 2020 from the low Earth polar-orbiting nadir mapper in the Ozone Mapping and Profiler Suite (OMPS-NM) near 13:30 local solar time suggests that there has been a 5 % increase in SH cloud reflection during December 2020 compared to previous years. This suggests that the observed increase by EPIC is mostly from an increase in cloud cover and not from enhanced backscatter. In the NH RSE values at large EPIC BA (177.5° in June 2020 and 178.2° in June 2021) between 30° N to 60° N show a percent decrease 4.8 % in RSE at 45° N during June 2021 and a 6 % increase during June 2020 at 55° N compared to the previous 4 years. This also suggests that the increase and decrease in RSE are probably related to changes in cloud cover and not backscatter angle effects. Annual integrals of percent reflected solar energy over complete years are almost constant at all latitudes.

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Long-range transport of stratospheric aerosols in the Southern Hemisphere following the 2015 Calbuco eruption

et al. 2017

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Abstract. After 43 years of inactivity, the Calbuco volcano, which is located in the southern part of Chile, erupted on 22 April 2015. The space-time evolutions (distribution and transport) of its aerosol plume are investigated by combining satellite (CALIOP, IASI, OMPS), in situ aerosol counting (LOAC OPC) and lidar observations, and the MIMOSA advection model. The Calbuco aerosol plume reached the Indian Ocean 1 week after the eruption. Over the Reunion Island site (21 • S, 55.5 • E), the aerosol signal was unambiguously enhanced in comparison with "background" conditions, with a volcanic aerosol layer extending from 18 to 21 km during the May-July period. All the data reveal an increase by a factor of ∼ 2 in the SAOD (stratospheric aerosol optical depth) with respect to values observed before the eruption. The aerosol mass e-folding time is approximately 90 days, which is rather close to the value (∼ 80 days) reported for the Sarychev eruption. Microphysical measurements obtained before, during, and after the eruption reflecting the impact of the Calbuco eruption on the lower stratospheric aerosol content have been analyzed over the Reunion Island site. During the passage of the plume, the volcanic aerosol was characterized by an effective radius of 0.16 ± 0.02 µm with a unimodal size distribution for particles above 0.2 µm in diameter. Particle concentrations for sizes larger than 1 µm are too low to be properly detected by the LOAC OPC. The aerosol number concentration was ∼ 20 times higher that observed before and 1 year after the eruption. According to OMPS and lidar observations, a tendency toward conditions before the eruption was observed by April 2016. The volcanic aerosol plume is advected eastward in the Southern Hemisphere and its latitudinal extent is clearly bounded by the subtropical barrier and the polar vortex. The transient behavior of the aerosol layers observed above Reunion Island between May and July 2015 reflects an inhomogeneous spatio-temporal distribution of the plume, which is controlled by the localization of these dynamical barriers.

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Suomi NPP OMPS limb profiler initial sensor performance assessment

Cited by 4 publications

References 1 publication

Measuring the Antarctic ozone hole with the new Ozone Mapping and Profiler Suite (OMPS)

Measuring the Antarctic ozone hole with the new Ozone Mapping and Profiler Suite (OMPS)

Measurement Report: Observed Increase in Southern Hemisphere Reflected Energy from Clouds During December 2020 and 2021

Long-range transport of stratospheric aerosols in the Southern Hemisphere following the 2015 Calbuco eruption

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