التفاصيل البيبلوغرافية
| العنوان: |
Multi-Sensors Investigation of Atmospheric Water Vapor Probability Distribution Function in the Free Troposphere for a Mediterranean Coastal Site |
| المؤلفون: |
Liberti, G. L., Cheruy, F., Congeduti, F., Dionisi, D. |
| المساهمون: |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
| المصدر: |
Proceedings of the Symposium Earth Observation and Water Cycle Science ; https://hal.science/hal-04113540 ; Proceedings of the Symposium Earth Observation and Water Cycle Science, 0000, à renseigner, Unknown Region |
| بيانات النشر: |
HAL CCSD |
| سنة النشر: |
2023 |
| المجموعة: |
Institut national des sciences de l'Univers: HAL-INSU |
| مصطلحات موضوعية: |
[SDU]Sciences of the Universe [physics] |
| جغرافية الموضوع: |
à renseigner, Unknown Region |
| الوصف: |
International audience ; Parameterization of sub-grid variability processes is a critical issue for large-scale atmospheric numerical models, particularly when used for climate studies. Indeed, the non-linearity of moist processes and the effects of clouds in energy and mass transport processes cause sensitivity to the definition of Probability Distribution Function (PDF) assumed in the model. The presented study investigates the possibility of deriving a description of the PDF from a set of observations representative of a Mediterranean coastal site. In order to describe the water vapour variability within a given atmospheric volume from a single sensor measurements, PDF's are derived from a set of high resolution (temporal and/or vertical) observations by mean of a set of assumptions on space/time correspondence derived from the analyses of local wind intensity measurements.Observations used in this study are:- Time series (from 2002 to date) of radiosoundings from the coastal station of Pratica di Mare (WMO station #16245, 41.67 N, 12.45 E, 35 m a.s.l), for which the original high-resolution data (10-s sampling, roughly corresponding to 30 m in vertical sampling) are available.- A set of measurement sessions, lasting typically 3-4 hours (1-min 75 m resolution original sampling) of water vapour profiles from the ISAC-CNR Raman Lidar [1] in Rome-Tor Vergata (41.8 ° N, 12.6 ° E, 107 m a.s.l.), extending up to the free troposphere with a nominal vertical resolution of 75 m.PDF's are derived assuming typical characteristics of the Climate Model LMDZ [2] in terms of horizontal and vertical (σ-levels) resolution.The investigation focuses on the description of the functional form of the PDF and on the parameterization of the PDF characterizing parameters.Limits and assumptions in the PDF definition technique are discussed, and in particular:- The representativeness of the Raman derived results due to the clear sky/night-time biased sampling.The results are confronted to the PDF's currently used in the LMDZ General ... |
| نوع الوثيقة: |
conference object |
| اللغة: |
English |
| Relation: |
hal-04113540; https://hal.science/hal-04113540; BIBCODE: 2009ESASP.674E.53L |
| الاتاحة: |
https://hal.science/hal-04113540 |
| رقم الانضمام: |
edsbas.48D236FC |
| قاعدة البيانات: |
BASE |