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The Impact of Dropsonde and Extra Radiosonde Observations during NAWDEX in Autumn 2016

Schindler, Matthias and Weissmann, Martin and Schäfler, Andreas and Radnoti, Gabor (2020) The Impact of Dropsonde and Extra Radiosonde Observations during NAWDEX in Autumn 2016. Monthly Weather Review, 148 (2), pp. 809-824. American Meteorological Society. DOI: 10.1175/MWR-D-19-0126.1 ISSN 0027-0644

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Official URL: https://journals.ametsoc.org/doi/abs/10.1175/MWR-D-19-0126.1

Abstract

Dropsonde observations from three research aircraft in the North Atlantic region, as well as several hundred additionally launched radiosondes over Canada and Europe, were collected during the international North Atlantic Waveguide and Downstream Impact Experiment (NAWDEX) in autumn 2016. In addition, over 1000 dropsondes were deployed during NOAA’s Sensing Hazards with Operational Unmanned Technology (SHOUT) and Reconnaissance missions in the west Atlantic basin, supplementing the conventional observing network for several intensive observation periods. This unique dataset was assimilated within the framework of cycled data denial experiments for a 1-month period performed with the global model of the ECMWF. Results show a slightly reduced mean forecast error (1%–3%) over the northern Atlantic and Europe by assimilating these additional observations, with the most prominent error reductions being linked to Tropical Storm Karl, Cyclones Matthew and Nicole, and their subsequent interaction with the midlatitude waveguide. The evaluation of Forecast Sensitivity to Observation Impact (FSOI) indicates that the largest impact is due to dropsondes near tropical storms and cyclones, followed by dropsondes over the northern Atlantic and additional Canadian radiosondes. Additional radiosondes over Europe showed a comparatively small beneficial impact.

Item URL in elib:https://elib.dlr.de/135069/
Document Type:Article
Title:The Impact of Dropsonde and Extra Radiosonde Observations during NAWDEX in Autumn 2016
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schindler, MatthiasMIM, Univ. MünchenUNSPECIFIED
Weissmann, MartinDWD, München & Univ. Wien, ÖsterreichUNSPECIFIED
Schäfler, AndreasDLR, IPAhttps://orcid.org/0000-0002-6165-6623
Radnoti, GaborECMWFUNSPECIFIED
Date:February 2020
Journal or Publication Title:Monthly Weather Review
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:148
DOI :10.1175/MWR-D-19-0126.1
Page Range:pp. 809-824
Publisher:American Meteorological Society
ISSN:0027-0644
Status:Published
Keywords:Data assimilation, field campaign, model analyses, forecast sensitivity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben LIDAR-Forschung und -Entwicklung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Institute of Atmospheric Physics > Lidar
Deposited By: Volkert, Dr. Hans
Deposited On:26 May 2020 17:05
Last Modified:01 Sep 2020 03:00

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