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1. Risk and predictive factors of prolonged viral RNA shedding in upper respiratory specimens in a large cohort of COVID-19 patients admitted to an Italian reference hospital

Author

Annalisa Mondi, Patrizia Lorenzini, Concetta Castilletti, Roberta Gagliardini, Eleonora Lalle, Angela Corpolongo, Maria Beatrice Valli, Fabrizio Taglietti, Stefania Cicalini, Laura Loiacono, Francesco Di Gennaro, Gianpiero D’Offizi, Fabrizio Palmieri, Emanuele Nicastri, Chiara Agrati, Nicola Petrosillo, Giuseppe Ippolito, Francesco Vaia, Enrico Girardi, Maria Rosaria Capobianchi, Andrea Antinori, Sara Zito, Maria Alessandra Abbonizio, Amina Abdeddaim, Elisabetta Agostini, Fabrizio Albarello, Gioia Amadei, Alessandra Amendola, Maria Assunta Antonica, Mario Antonini, Tommaso Ascoli Bartoli, Francesco Baldini, Raffaella Barbaro, Barbara Bartolini, Rita Bellagamba, Martina Benigni, Nazario Bevilacqua, Gianluigi Biava, Michele Bibas, Licia Bordi, Veronica Bordoni, Evangelo Boumis, Marta Branca, Rosanna Buonomo, Donatella Busso, Marta Camici, Paolo Campioni, Flaminia Canichella, Alessandro Capone, Cinzia Caporale, Emanuela Caraffa, Ilaria Caravella, Fabrizio Carletti, Adriana Cataldo, Stefano Cerilli, Carlotta Cerva, Roberta Chiappini, Pierangelo Chinello, Maria Assunta Cianfarani, Carmine Ciaralli, Claudia Cimaglia, Nicola Cinicola, Veronica Ciotti, Francesca Colavita, Massimo Cristofaro, Salvatore Curiale, Alessandra D’Abramo, Cristina Dantimi, Alessia De Angelis, Giada De Angelis, Maria Grazia De Palo, Federico De Zottis, Virginia Di Bari, Rachele Di Lorenzo, Federica Di Stefano, Davide Donno, Francesca Evangelista, Francesca Faraglia, Anna Farina, Federica Ferraro, Lorena Fiorentini, Andrea Frustaci, Matteo Fusetti, Vincenzo Galati, Paola Gallì, Gabriele Garotto, Ilaria Gaviano, Saba Gebremeskel Tekle, Maria Letizia Giancola, Filippo Giansante, Emanuela Giombini, Guido Granata, Maria Cristina Greci, Elisabetta Grilli, Susanna Grisetti, Gina Gualano, Fabio Iacomi, Marta Iaconi, Giuseppina Iannicelli, Carlo Inversi, Maria Elena Lamanna, Simone Lanini, Daniele Lapa, Luciana Lepore, Raffaella Libertone, Raffaella Lionetti, Giuseppina Liuzzi, Andrea Lucia, Franco Lufrani, Manuela Macchione, Gaetano Maffongelli, Alessandra Marani, Luisa Marchioni, Andrea Mariano, Maria Cristina Marini, Micaela Maritti, Annelisa Mastrobattista, Ilaria Mastrorosa, Giulia Matusali, Valentina Mazzotta, Paola Mencarini, Silvia Meschi, Francesco Messina, Sibiana Micarelli, Giulia Mogavero, Marzia Montalbano, Chiara Montaldo, Silvia Mosti, Silvia Murachelli, Maria Musso, Michela Nardi, Assunta Navarra, Martina Nocioni, Pasquale Noto, Roberto Noto, Alessandra Oliva, Ilaria Onnis, Sandrine Ottou, Claudia Palazzolo, Emanuele Pallini, Giulio Palombi, Carlo Pareo, Virgilio Passeri, Federico Pelliccioni, Giovanna Penna, Antonella Petrecchia, Ada Petrone, Elisa Pianura, Carmela Pinnetti, Maria Pisciotta, Pierluca Piselli, Silvia Pittalis, Agostina Pontarelli, Costanza Proietti, Vincenzo Puro, Paolo Migliorisi Ramazzini, Alessia Rianda, Gabriele Rinonapoli, Silvia Rosati, Dorotea Rubino, Martina Rueca, Alberto Ruggeri, Alessandra Sacchi, Alessandro Sampaolesi, Francesco Sanasi, Carmen Santagata, Alessandra Scarabello, Silvana Scarcia, Vincenzo Schininà, Paola Scognamiglio, Laura Scorzolini, Giulia Stazi, Giacomo Strano, Chiara Taibi, Giorgia Taloni, Tetaj Nardi, Roberto Tonnarini, Simone Topino, Martina Tozzi, Francesco Vairo, Alessandra Vergori, Laura Vincenzi, Ubaldo Visco-Comandini, Serena Vita, Pietro Vittozzi, Mauro Zaccarelli, and Antonella Zanetti

Subjects
Coronavirus, SARS-CoV-2, COVID-19, viral clearance, viral shedding, Risk factors, Infectious and parasitic diseases, RC109-216
Abstract

Background: Limited data are available about the predictors and outcomes associated with prolonged SARS-CoV-2 RNA shedding (VS). Methods: A retrospective study including COVID-19 patients admitted to an Italian hospital between March 1 and July 1, 2020. Predictors of viral clearance (VC) and prolonged VS from the upper respiratory tract were assessed by Poisson regression and logistic regression analyses. The causal relation between VS and clinical outcomes was evaluated through an inverse probability weighted Cox model. Results: The study included 536 subjects. The median duration of VS from symptoms onset was 18 days. The estimated 30-day probability of VC was 70.2%. Patients with comorbidities, lymphopenia at hospital admission, or moderate/severe respiratory disease had a lower chance of VC. The development of moderate/severe respiratory failure, delayed hospital admission after symptoms onset, baseline comorbidities, or D-dimer >1000 ng/mL at admission independently predicted prolonged VS. The achievement of VC doubled the chance of clinical recovery and reduced the probability of death/mechanical ventilation. Conclusions: Respiratory disease severity, comorbidities, delayed hospital admission and inflammatory markers negatively predicted VC, which resulted to be associated with better clinical outcomes. These findings highlight the importance of prompt hospitalization of symptomatic patients, especially where signs of severity or comorbidities are present.

Published
2021
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2. Down Syndrome patients with COVID-19 pneumonia: A high-risk category for unfavourable outcome

Author

Serena Vita, Virginia Di Bari, Angela Corpolongo, Delia Goletti, Joaquin Espinosa, Sebastiano Petracca, Fabrizio Palmieri, Emanuele Nicastri, Abbonizio, Chiara Agrati, Fabrizio Albarello, Gioia Amadei, Alessandra Amendola, Mario Antonini, Raffaella Barbaro, Barbara Bartolini, Martina Benigni, Nazario Bevilacqua, Licia Bordi, Veronica Bordoni, Marta Branca, Paolo Campioni, Maria Rosaria Capobianchi, Cinzia Caporale, Ilaria Caravella, Fabrizio Carletti, Concetta Castilletti, Roberta Chiappini, Carmine Ciaralli, Francesca Colavita, Massimo Cristofaro, Salvatore Curiale, Alessandra D’Abramo, Cristina Dantimi, Alessia De Angelis, Giada De Angelis, Rachele Di Lorenzo, Federica Di Stefano, Federica Ferraro, Lorena Fiorentini, Andrea Frustaci, Paola Gallì, Gabriele Garotto, Maria Letizia Giancola, Filippo Giansante, Emanuela Giombini, Maria Cristina Greci, Giuseppe Ippolito, Eleonora Lalle, Simone Lanini, Daniele Lapa, Luciana Lepore, Andrea Lucia, Franco Lufrani, Manuela Macchione, Alessandra Marani, Luisa Marchioni, Andrea Mariano, Maria Cristina Marini, Micaela Maritti, Giulia Matusali, Silvia Meschi, Francesco Messina Chiara Montaldo, Silvia Murachelli, Roberto Noto, Claudia Palazzolo, Emanuele Pallini, Virgilio Passeri, Federico Pelliccioni, Antonella Petrecchia, Ada Petrone, Nicola Petrosillo, Elisa Pianura, Maria Pisciotta, Silvia Pittalis, Costanza Proietti, Vincenzo Puro, Gabriele Rinonapoli, Martina Rueca, Alessandra Sacchi, Francesco Sanasi, Carmen Santagata, Silvana Scarcia, Vincenzo Schininà, Paola Scognamiglio, Laura Scorzolini, Giulia Stazi, Francesco Vaia, Francesco Vairo, and Maria Beatrice Valli

Subjects
COVID-19 pneumonia, Down syndrome, Immune dysregulation, Immune activation, Infectious and parasitic diseases, RC109-216
Abstract

We report two cases of Corona Virus Disease-19 (COVID-19) in patients with Down Syndrome (DS) and describe the identification, diagnosis, clinical course and management of the infection. Down Syndrome, which is caused by trisomy 21, is characterized by immune dysregulation, anatomical differences in the upper respiratory tract and higher rate of comorbidities. All these risk factors can contribute to more severe clinical presentations of COVID-19 in this population. It is essential to raise awareness of the clinical relevance of SARS-COV-2 infection in DS patients, as well as in other most vulnerable patients, in order to improve their management and treatment and to encourage vaccinating these individuals early, once a vaccination is available.

Published
2021
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3. 2019-novel Coronavirus severe adult respiratory distress syndrome in two cases in Italy: An uncommon radiological presentation

Author

Fabrizio Albarello, Elisa Pianura, Federica Di Stefano, Massimo Cristofaro, Ada Petrone, Luisa Marchioni, Claudia Palazzolo, Vincenzo Schininà, Emanuele Nicastri, Nicola Petrosillo, Paolo Campioni, Petersen Eskild, Alimuddin Zumla, Giuseppe Ippolito, Maria Alessandra Abbonizio, Chiara Agrati, Gioia Amadei, Alessandra Amendola, Mario Antonini, Raffaella Barbaro, Barbara Bartolini, Martina Benigni, Nazario Bevilacqua, Licia Bordi, Veronica Bordoni, Marta Branca, Maria Rosaria Capobianchi, Cinzia Caporale, Ilaria Caravella, Fabrizio Carletti, Concetta Castilletti, Roberta Chiappini, Carmine Ciaralli, Francesca Colavita, Angela Corpolongo, Salvatore Curiale, Alessandra D’Abramo, Cristina Dantimi, Alessia De Angelis, Giada De Angelis, Rachele Di Lorenzo, Federica Ferraro, Lorena Fiorentini, Andrea Frustaci, Paola Gallì, Gabriele Garotto, Maria Letizia Giancola, Filippo Giansante, Emanuela Giombini, Maria Cristina Greci, Eleonora Lalle, Simone Lanini, Daniele Lapa, Luciana Lepore, Andrea Lucia, Franco Lufrani, Manuela Macchione, Alessandra Marani, Andrea Mariano, Maria Cristina Marini, Micaela Maritti, Giulia Matusali, Silvia Meschi, Francesco Messina Chiara Montaldo, Silvia Murachelli, Roberto Noto, Emanuele Pallini, Virgilio Passeri, Federico Pelliccioni, Antonella Petrecchia, Maria Pisciotta, Silvia Pittalis, Costanza Proietti, Vincenzo Puro, Gabriele Rinonapoli, Martina Rueca, Alessandra Sacchi, Francesco Sanasi, Carmen Santagata, Silvana Scarcia, Paola Scognamiglio, Laura Scorzolini, Giulia Stazi, Francesco Vaia, Francesco Vairo, and Maria Beatrice Valli

Subjects
Infectious and parasitic diseases, RC109-216
Abstract

Introduction: Several recent case reports have described common early chest imaging findings of lung pathology caused by 2019 novel Coronavirus (SARS-COV2) which appear to be similar to those seen previously in SARS-CoV and MERS-CoV infected patients. Objective: We present some remarkable imaging findings of the first two patients identified in Italy with COVID-19 infection travelling from Wuhan, China. The follow-up with chest X-Rays and CT scans was also included, showing a progressive adult respiratory distress syndrome (ARDS). Results: Moderate to severe progression of the lung infiltrates, with increasing percentage of high-density infiltrates sustained by a bilateral and multi-segmental extension of lung opacities, were seen. During the follow-up, apart from pleural effusions, a tubular and enlarged appearance of pulmonary vessels with a sudden caliber reduction was seen, mainly found in the dichotomic tracts, where the center of a new insurgent pulmonary lesion was seen. It could be an early alert radiological sign to predict initial lung deterioration. Another uncommon element was the presence of mediastinal lymphadenopathy with short-axis oval nodes. Conclusions: Although only two patients have been studied, these findings are consistent with the radiological pattern described in literature. Finally, the pulmonary vessels enlargement in areas where new lung infiltrates develop in the follow-up CT scan, could describe an early predictor radiological sign of lung impairment. Keywords: COVID-19, SARS-COV2, CT-scan, Ground glass opacities, Crazy-paving, Enlarged pulmonary vessels

Published
2020
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4. Risk and predictive factors of prolonged viral RNA shedding in upper respiratory specimens in a large cohort of COVID-19 patients admitted in an Italian Reference Hospital

Author

Annalisa Mondi, Patrizia Lorenzini, Concetta Castilletti, Roberta Gagliardini, Eleonora Lalle, Angela Corpolongo, Maria Beatrice Valli, Fabrizio Taglietti, Stefania Cicalini, Laura Loiacono, Francesco Di Gennaro, Gianpiero D’Offizi, Fabrizio Palmieri, Emanuele Nicastri, Chiara Agrati, Nicola Petrosillo, Giuseppe Ippolito, Francesco Vaia, Enrico Girardi, Maria Rosaria Capobianchi, Andrea Antinori, Sara Zito, Maria Alessandra Abbonizio, Amina Abdeddaim, Elisabetta Agostini, Fabrizio Albarello, Gioia Amadei, Alessandra Amendola, Maria Assunta Antonica, Mario Antonini, Tommaso Ascoli Bartoli, Francesco Baldini, Raffaella Barbaro, Barbara Bartolini, Rita Bellagamba, Martina Benigni, Nazario Bevilacqua, Gianluigi Biava, Michele Bibas, Licia Bordi, Veronica Bordoni, Evangelo Boumis, Marta Branca, Rosanna Buonomo, Donatella Busso, Marta Camici, Paolo Campioni, Flaminia Canichella, Alessandro Capone, Cinzia Caporale, Emanuela Caraffa, Ilaria Caravella, Fabrizio Carletti, Adriana Cataldo, Stefano Cerilli, Carlotta Cerva, Roberta Chiappini, Pierangelo Chinello, Maria Assunta Cianfarani, Carmine Ciaralli, Claudia Cimaglia, Nicola Cinicola, Veronica Ciotti, Francesca Colavita, Massimo Cristofaro, Salvatore Curiale, Alessandra D’Abramo, Cristina Dantimi, Alessia De Angelis, Giada De Angelis, Maria Grazia De Palo, Federico De Zottis, Virginia Di Bari, Rachele Di Lorenzo, Federica Di Stefano, Davide Donno, Francesca Evangelista, Francesca Faraglia, Anna Farina, Federica Ferraro, Lorena Fiorentini, Andrea Frustaci, Matteo Fusetti, Vincenzo Galati, Paola Gallì, Gabriele Garotto, Ilaria Gaviano, Saba Gebremeskel Tekle, Maria Letizia Giancola, Filippo Giansante, Emanuela Giombini, Guido Granata, Maria Cristina Greci, Elisabetta Grilli, Susanna Grisetti, Gina Gualano, Fabio Iacomi, Marta Iaconi, Giuseppina Iannicelli, Carlo Inversi, Maria Elena Lamanna, Simone Lanini, Daniele Lapa, Luciana Lepore, Raffaella Libertone, Raffaella Lionetti, Giuseppina Liuzzi, Andrea Lucia, Franco Lufrani, Manuela Macchione, Gaetano Maffongelli, Alessandra Marani, Luisa Marchioni, Andrea Mariano, Maria Cristina Marini, Micaela Maritti, Annelisa Mastrobattista, Ilaria Mastrorosa, Giulia Matusali, Valentina Mazzotta, Paola Mencarini, Silvia Meschi, Francesco Messina, Sibiana Micarelli, Giulia Mogavero, Marzia Montalbano, Chiara Montaldo, Silvia Mosti, Silvia Murachelli, Maria Musso, Michela Nardi, Assunta Navarra, Martina Nocioni, Pasquale Noto, Roberto Noto, Alessandra Oliva, Ilaria Onnis, Sandrine Ottou, Claudia Palazzolo, Emanuele Pallini, Giulio Palombi, Carlo Pareo, Virgilio Passeri, Federico Pelliccioni, Giovanna Penna, Antonella Petrecchia, Ada Petrone, Elisa Pianura, Carmela Pinnetti, Maria Pisciotta, Pierluca Piselli, Silvia Pittalis, Agostina Pontarelli, Costanza Proietti, Vincenzo Puro, Paolo Migliorisi Ramazzini, Alessia Rianda, Gabriele Rinonapoli, Silvia Rosati, Dorotea Rubino, Martina Rueca, Alberto Ruggeri, Alessandra Sacchi, Alessandro Sampaolesi, Francesco Sanasi, Carmen Santagata, Alessandra Scarabello, Silvana Scarcia, Vincenzo Schininà, Paola Scognamiglio, Laura Scorzolini, Giulia Stazi, Giacomo Strano, Chiara Taibi, Giorgia Taloni, Tetaj Nardi, Roberto Tonnarini, Simone Topino, Martina Tozzi, Francesco Vairo, Alessandra Vergori, Laura Vincenzi, Ubaldo Visco-Comandini, Serena Vita, Pietro Vittozzi, Mauro Zaccarelli, Antonella Zanetti, Mondi, A., Lorenzini, P., Castilletti, C., Gagliardini, R., Lalle, E., Corpolongo, A., Valli, M. B., Taglietti, F., Cicalini, S., Loiacono, L., Di Gennaro, F., D'Offizi, G., Palmieri, F., Nicastri, E., Agrati, C., Petrosillo, N., Ippolito, G., Vaia, F., Girardi, E., Capobianchi, M. R., Antinori, A., Zito, S., Abbonizio, M. A., Abdeddaim, A., Agostini, E., Albarello, F., Amadei, G., Amendola, A., Antonica, M. A., Antonini, M., Bartoli, T. A., Baldini, F., Barbaro, R., Bartolini, B., Bellagamba, R., Benigni, M., Bevilacqua, N., Biava, G., Bibas, M., Bordi, L., Bordoni, V., Boumis, E., Branca, M., Buonomo, R., Busso, D., Camici, M., Campioni, P., Canichella, F., Capone, A., Caporale, C., Caraffa, E., Caravella, I., Carletti, F., Cataldo, A., Cerilli, S., Cerva, C., Chiappini, R., Chinello, P., Cianfarani, M. A., Ciaralli, C., Cimaglia, C., Cinicola, N., Ciotti, V., Colavita, F., Cristofaro, M., Curiale, S., D'Abramo, A., Dantimi, C., De Angelis, A., De Angelis, G., De Palo, M. G., De Zottis, F., Di Bari, V., Di Lorenzo, R., Di Stefano, F., Donno, D., Evangelista, F., Faraglia, F., Farina, A., Ferraro, F., Fiorentini, L., Frustaci, A., Fusetti, M., Galati, V., Galli, P., Garotto, G., Gaviano, I., Tekle, S. G., Giancola, M. L., Giansante, F., Giombini, E., Granata, G., Greci, M. C., Grilli, E., Grisetti, S., Gualano, G., Iacomi, F., Iaconi, M., Iannicelli, G., Inversi, C., Lamanna, M. E., Lanini, S., Lapa, D., Lepore, L., Libertone, R., Lionetti, R., Liuzzi, G., Lucia, A., Lufrani, F., Macchione, M., Maffongelli, G., Marani, A., Marchioni, L., Mariano, A., Marini, M. C., Maritti, M., Mastrobattista, A., Mastrorosa, I., Matusali, G., Mazzotta, V., Mencarini, P., Meschi, S., Messina, F., Micarelli, S., Mogavero, G., Montalbano, M., Montaldo, C., Mosti, S., Murachelli, S., Musso, M., Nardi, M., Navarra, A., Nocioni, M., Noto, P., Noto, R., Oliva, A., Onnis, I., Ottou, S., Palazzolo, C., Pallini, E., Palombi, G., Pareo, C., Passeri, V., Pelliccioni, F., Penna, G., Petrecchia, A., Petrone, A., Pianura, E., Pinnetti, C., Pisciotta, M., Piselli, P., Pittalis, S., Pontarelli, A., Proietti, C., Puro, V., Ramazzini, P. M., Rianda, A., Rinonapoli, G., Rosati, S., Rubino, D., Rueca, M., Ruggeri, A., Sacchi, A., Sampaolesi, A., Sanasi, F., Santagata, C., Scarabello, A., Scarcia, S., Schinina, V., Scognamiglio, P., Scorzolini, L., Stazi, G., Strano, G., Taibi, C., Taloni, G., Nardi, T., Tonnarini, R., Topino, S., Tozzi, M., Vairo, F., Vergori, A., Vincenzi, L., Visco-Comandini, U., Vita, S., Vittozzi, P., Zaccarelli, M., and Zanetti, A.

Subjects
Male, 0301 basic medicine, Time Factors, medicine.medical_treatment, Respiratory System, coronavirus, Infectious and parasitic diseases, RC109-216, Severity of Illness Index, Cohort Studies, 0302 clinical medicine, risk factors, 030212 general & internal medicine, Respiratory disease, General Medicine, Middle Aged, Virus Shedding, Infectious Diseases, symbols, RNA, Viral, Female, Coronavirus, COVID-19, viral clearance, viral shedding, Risk factors, SARS-CoV-2, Cohort study, Adult, Microbiology (medical), medicine.medical_specialty, viral shedding, Coronaviru, 030106 microbiology, Article, NO, 03 medical and health sciences, symbols.namesake, Internal medicine, Severity of illness, medicine, Humans, Poisson regression, Aged, Proportional Hazards Models, Mechanical ventilation, business.industry, Proportional hazards model, COVID-19, Retrospective cohort study, medicine.disease, Respiratory failure, Risk factor, business, viral clearance
Abstract

Background Few data about predictors and outcomes associated with prolonged SARS-CoV-2 RNA shedding (VS) are available. Methods Retrospective study including all patients admitted with COVID-19 in an Italian reference hospital for infectious diseases between March 1 and July 1, 2020. Predictors of viral clearance (VC) and prolonged VS from upper respiratory tract were assessed by Poisson regression and logistic regression analyses. The causal relation between duration of VS and probability of clinical outcomes was evaluated through inverse probability weighted Cox model. Results 536 subjects were included. Median duration of VS from symptoms onset was 18 days (IQR 12-26). The estimated 30-day probability of VC was 70.2% (95%CI:65-75). At multivariable analysis, patients with comorbidities (aIRR = 0.88, p = 0.004), lymphopenia at hospital admission (aIRR = 0.75, p = 0.032) and with moderate/severe respiratory disease (aIRR = 0.42, p 1000 ng/mL at admission (aOR = 1.76, p = 0.035) independently predicted prolonged VS. The achievement of VC doubled the chance of clinical recovery (aHR = 2.17, p

Published
2021

5. Performances of GPM satellite precipitation over the two major Mediterranean islands

Author

Antonio Francipane, Roberto Deidda, Domenico Caracciolo, Francesco Viola, Leonardo Noto, Caracciolo, Domenico, Francipane, Antonio, Viola, Francesco, Noto, Leonardo, Deidda, Roberto, Caracciolo, D., Francipane, A., Viola, F., Noto, L., Deidda, R., and Francipane Antonio, Caracciolo Domenico, Viola Francesco, Deidda Roberto, Noto Leonardo

Subjects
Atmospheric Science, 010504 meteorology & atmospheric sciences, Rain gauge, GPM, satellite precipitation, Mediterranean islands, Satellite, GPM, IMERG, Rainfall, Mediterranean islands, 0208 environmental biotechnology, GPM, IMERG, Mediterranean islands, rainfall, satellite, Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia, Orography, 02 engineering and technology, Satellite precipitation, 01 natural sciences, 020801 environmental engineering, Mediterranean sea, Temporal resolution, Climatology, Environmental science, Precipitation, Mediterranean Islands, Global Precipitation Measurement, 0105 earth and related environmental sciences
Abstract

Reliable and accurate precipitation measurement or estimation is crucial for disaster monitoring and water resource management. However, obtaining accurate high-resolution precipitation fields is still a challenging task for scientists and practitioners, especially in the poorer region of the world. Nowadays the scientific community expects significant improvements in precipitation monitoring by the continuous technological evolution of satellite-rainfall estimate systems which are able to produce data with global coverage and thus can provide low-cost information even in scarcely populated areas or places where for economic reasons ground measures are missing. The most recent satellite mission is the Global Precipitation Measurement (GPM), which is an international constellation of ten partner satellites, and a promising source of rainfall estimates at high spatial and temporal resolution. In this context, the aim of this study is to assess the reliability of satellite-precipitation GPM products by evaluating to which extent these estimates are consistent with measured data. Our analysis is carried out using raingauges data in the two major islands of Mediterranean Sea, i.e. Sardinia and Sicily (Italy). Both are characterized by a complex morphology, and can be considered interesting test sites for satellite-precipitation GPM product in the European mid-latitude area. Indeed both islands experience different precipitation types, originated by stratiform and convective systems as well as by the interaction of steep orography in the coasts with winds carrying on humid air masses from the Mediterranean Sea. The GPM post real-time “Final” run product at 0.1 spatial resolution and half-hour temporal resolution has been selected for the two-year 2015-2016 period. Evaluation and comparison of the selected product are performed at hourly and daily time scale with reference to data provided by the raingauge networks of the two islands and by using statistical and graphical tools.

Published
2018

6. PRECIPITATION ESTIMATION THROUGH SATELLITE SYSTEM OVER THE MAJOR MEDITERRANEAN ISLANDS

Author

Caracciolo Domenico, Francipane Antonio, Viola Francesco, Deidda Roberto, Noto Leonardo, Caracciolo, D., Francipane, A., A., Viola, F., Deidda, R., Noto, L., and Caracciolo Domenico, Francipane Antonio, Viola Francesco, Deidda Roberto, Noto Leonardo

Subjects
GPM, Satellite Precipitation, Sicily, Sardinia, GPM, IMERG, Mediterranean islands, rainfall, satellite, Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologia
Abstract

Reliable and accurate precipitation measurement or estimation is crucial for disaster monitoring and water resource management. Nowadays the scientific community expects significant improvements in precipitation monitoring by the continuous technological evolution of satellite-rainfall estimate systems which are able to produce data with global coverage and thus can provide low-cost information even in scarcely populated areas or places where for economic reasons ground measures are missing. The most recent satellite mission is the Global Precipitation Measurement (GPM), which is an international constellation of ten partner satellites, and a source of rainfall estimates at high spatial and temporal resolution (Huffman et al., 2017). In this context, the aim of this study is to test satellite-precipitation GPM-IMERG products against data provided by dense raingauges over the two major islands of Mediterranean Sea, i.e. Sardinia and Sicily. The two islands are characterized by a complex morphology and by small spatial scale and long see-land transition borders. Moreover, they experience different precipitation types, originated by convective and stratiform systems as well as by the interaction of steep orography in the coasts with winds carrying on humid air masses from the Mediterranean Sea. For these reasons, the two islands can be considered as interesting test sites for satellite-precipitation GPM-IMERG product in the European mid-latitude area and in general for complex domains. The GPM-IMERG post real-time “Final” run product (last version V4 released in spring 2017) at 0.1° spatial resolution and half-hour temporal resolution has been selected for the two years period 2015-2016. Evaluation and comparison of the selected product are performed with reference to data provided by the raingauges network of the two islands. Both GPM and raingauges data have been aggregated at hourly time scale, then the raingauges data have been spatially interpolated and resampled at the GPM resolution grid. In order to obtain general information about the performances of estimates related to the entire two islands, features of rainfall spatial distribution and the influence of the aggregation time scale have been investigated using statistical and graphical tools.

Published
2018

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