ERUO: a spectral processing routine for the Micro Rain Radar PRO (MRR-PRO)

Ferrone, Alfonso; Billault–Roux, Anne-Claire; Berne, Alexis

doi:10.5194/amt-15-3569-2022

Cited by 3 publications

(11 citation statements)

References 17 publications

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“…Other issues in the measurements include a drop in the power recorded in the raw Doppler spectra in the lines adjacent the extremes of the Nyquist velocity interval. To address these issues, the MRR-PRO data have been processed by the ERUO library (Ferrone et al, 2022), which acts on the raw Doppler spectra to extract a cleaner set of radar variables. ERUO also performs a simple dealiasing in the Doppler velocity measurements, and it increases the sensitivity in the profiles of attenuated equivalent reflectivity factor.…”

Section: Mrr-promentioning

confidence: 99%

“…Since the three MRR-PROs share the same hardware specifications, we expect a similar sensitivity in their measurements. Following the analysis presented in Ferrone et al (2022), we can use the quantile 0.01 of the empirical Z ea distribution at each range gate to estimate the sensitivity. The difference between the quantile 0.01 of the MRR-PRO 06 distributions and the same quantile in the MRR-PRO 22 ones is 9 dB, and the interquartile range (quantile 0.75 minus quantile 0.25) of this difference is equal to 2 dB.…”

Section: Sensitivity Of the Radarsmentioning

confidence: 99%

“…the noise level computed by ERUO (Ferrone et al, 2022) at each range gate, identified in the files by the short name "noise_level";…”

mentioning

confidence: 99%

“…the transfer function, used to convert the raw spectral power to spectral reflectivity, as described in Ferrone et al (2022), and identified in the files by the short name "transfer_function".…”

mentioning

confidence: 99%

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Radar and ground-level measurements of clouds and precipitation collected during the POPE 2020 campaign at Princess Elisabeth Antarctica

Ferrone

Berne

2023

Earth Syst. Sci. Data

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Abstract. The datasets presented in this article were collected during a 4-month measurement campaign at the Belgian research base Princess Elisabeth Antarctica (PEA). The campaign, named PEA Orographic Precipitation Experiment (POPE), was conducted by the Environmental Remote Sensing Laboratory of the École Polytechnique Fédérale de Lausanne, with the logistical support of the International Polar Foundation, between the end of November 2019 and the beginning of February 2020. The datasets have been collected at five different sites. A W-band Doppler cloud profiler and a multi-angle snowflake camera (MASC) have been deployed in the immediate proximity of the main building of the station. An X-band dual-polarization Doppler scanning weather radar was installed 1.9 km southeast of PEA. Information on the various hydrometeor types have been derived from its measurements and from the images collected by the MASC. The remaining three sites were located in a transect across the mountain chain south of the base, between 7 and 17 km apart from each other. At each site, a K-band Doppler profiler and an automated weather station have been deployed. A pyrgeometer and a pyranometer accompanied the instruments at the site in the middle of the transect. The radar variables and the measurements collected by the weather stations and radiometers are available at https://doi.org/10.5281/zenodo.7428690 (Ferrone and Berne, 2023c). The Doppler spectra are available at https://doi.org/10.5281/zenodo.7507087 (Ferrone and Berne, 2023a) and https://doi.org/10.5075/epfl-lte-299685 (Ferrone and Berne, 2023b). A case study, covering the precipitation event recorded on 23 December 2019, is presented to illustrate the various datasets. Overall, the availability of radar measurements over a complex terrain, relatively far from a scientific base, is extremely rare in the Antarctic context and opens a wide range of possibilities for precipitation studies over the region.

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Section: Mrr-promentioning

confidence: 99%

Section: Sensitivity Of the Radarsmentioning

confidence: 99%

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Radar and ground-level measurements of clouds and precipitation collected during the POPE 2020 campaign at Princess Elisabeth Antarctica

Ferrone

Berne

2023

Earth Syst. Sci. Data

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“…The radar data have been processed and postprocessed using the "Enhancement and Reconstruction of the spec-trUm for the MRR-PRO" (ERUO hereafter) algorithm (Ferrone et al, 2022). This re-processing aims to remove nonmeteorological artifacts from the measurements and to improve the sensitivity of the radar variables.…”

Section: Mrr-promentioning

confidence: 99%

Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica

Ferrone,

Vignon,

Zonato

et al. 2023

The Cryosphere

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Abstract. During the austral summer 2019/2020, three vertically pointing K-band Doppler profilers (Micro Rain Radar PRO, MRR-PRO) were deployed along a transect across the Sør Rondane Mountains, directly south of the scientific base Princess Elisabeth Antarctica. The MRR-PRO devices were placed at locations corresponding to different stages of the interaction between the complex terrain and the typical flow associated with precipitating systems. The radar measurements, alongside information from the ERA5 reanalysis and a set of high-resolution Weather Research and Forecasting (WRF) simulations, have been used to study the spatial variability in snowfall across the transect. Radar observations reveal differences in the frequency of occurrence of virga and surface precipitation above the transect. An analysis of the WRF outputs reveals the presence of a relatively dry layer above the radar locations, reaching a constant altitude of 3.5 km above mean sea level. Due to the complex terrain, the depth of the layer varies across the transect, affecting sublimation and the occurrence of virgae. Combined information from the ERA5 reanalysis, the WRF simulations, and ground-level measurements suggests that orographic lifting enhances precipitation above the highest mountain peaks. Finally, the analysis of the succession of virga and surface precipitation above the sites shows that, in most cases, they represent different stages of the same large-scale events. This study reveals the significant spatial variability in the occurrence of precipitation in a region of complex terrain, emphasizing the importance of collecting snowfall measurements in the mountainous regions of the Antarctic continent.

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Aspects of Rain Drop Size Distribution Characteristics from Measurements in Two Mid-Latitude Coastal Locations

Thurai,

Bringi,

Wolff

et al. 2023

Ecas 2023

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ERUO: a spectral processing routine for the Micro Rain Radar PRO (MRR-PRO)

Cited by 3 publications

References 17 publications

Radar and ground-level measurements of clouds and precipitation collected during the POPE 2020 campaign at Princess Elisabeth Antarctica

Radar and ground-level measurements of clouds and precipitation collected during the POPE 2020 campaign at Princess Elisabeth Antarctica

Local spatial variability in the occurrence of summer precipitation in the Sør Rondane Mountains, Antarctica

Aspects of Rain Drop Size Distribution Characteristics from Measurements in Two Mid-Latitude Coastal Locations

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