elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Statistical analysis of contrail lifetimes from a satellite perspective

Gierens, Klaus Martin und Vazquez-Navarro, Margarita (2018) Statistical analysis of contrail lifetimes from a satellite perspective. Meteorologische Zeitschrift, 27 (3), Seiten 183-193. Borntraeger Science Publishers. doi: 10.1127/metz/2018/0888. ISSN 0941-2948.

[img] PDF
437kB

Offizielle URL: https://www.schweizerbart.de/papers/metz/detail/27/88472/Statistical_analysis_of_contrail_lifetimes_from_a_satellite_perspective

Kurzfassung

The study of the lifetimes of contrails from a satellite perspective benefits from the extended coverage and close temporal monitoring. However, the initial stages of the contrail development are not observed from a satellite platform due to the sub-pixel size of the forming cloud. The final stages may be unobserved as well when the contrails get spatially diluted and when they lose contrast with their background. In this paper we apply a Weibull distribution model to describe the survival rate of contrails during their observed life-span and adjust its two defining parameters (lambda and k) to fit a dataset of over 2300 contrails. Using the Weibull distribution, it is possible to estimate the expected further lifetime of the contrails after satellite observation ceased. Depending on the actually observed lifetime, the expected extension can range from about 1 to 4h, but the overall mean of this duration is about 1.3h. The time elapsed between contrail formation and first satellite observation is estimated from the initial width distribution of the contrails. Under the assumption of a 5km/h spreading rate, the average age of contrails at the time of their first satellite detection is 1.5+-0.4h. Using a Monte Carlo simulation, we are able to compute the cumulative distribution of the complete (i.e. initial spreading, tracking, and after-tracking periods) lifetime of persistent contrails. This complete lifetime has a mean value of 3.7+-2.8h. The Weibull distribution (k<1) shows that the probability to survive increases with contrail age, which corresponds to the actual decay rate of contrails in nature. Additionally, we analyse lifetime differences between daytime and nighttime contrails. We find that nighttime contrails have slightly shorter lifetimes than daytime contrails. Although this difference is statistically significant, it remains to be shown whether this has important physical consequences.

elib-URL des Eintrags:https://elib.dlr.de/121762/
Dokumentart:Zeitschriftenbeitrag
Titel:Statistical analysis of contrail lifetimes from a satellite perspective
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Gierens, Klaus MartinDLR, IPAhttps://orcid.org/0000-0001-6983-5370NICHT SPEZIFIZIERT
Vazquez-Navarro, MargaritaDLR, IPANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2018
Erschienen in:Meteorologische Zeitschrift
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:27
DOI:10.1127/metz/2018/0888
Seitenbereich:Seiten 183-193
Verlag:Borntraeger Science Publishers
ISSN:0941-2948
Status:veröffentlicht
Stichwörter:Statistische Methoden, Kondensstreifen, Satellitendaten
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Verkehrssystem
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V VS - Verkehrssystem
DLR - Teilgebiet (Projekt, Vorhaben):V - Transport und Klima (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre
Hinterlegt von: Gierens, Dr.rer.nat. Klaus Martin
Hinterlegt am:19 Sep 2018 15:39
Letzte Änderung:03 Nov 2023 11:05

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.