TY - GEN
AU - Inna Polichtchouk
AU - Peter Bechtold
AU - Massimo Bonavita
AU - Richard Forbes
AU - Sean Healy
AU - Robin Hogan
AU - Patrick Laloyaux
AU - Michael Rennie
AU - Tim Stockdale
AU - Nils Wedi
AU - Michail Diamantakis
AU - Johannes Flemming
AU - Stephen English
AU - Lars Isaksen
AU - Filip Vána
AU - Sonja Gisinger
AU - Nicholas Byrne
AB - <p>
  Accurate representation of the stratosphere in NWP models is important for accurate analysis/reanalysis products. It is also important for extended-range and seasonal forecasting because stratospheric variability can influence tropospheric weather patterns on these timescales. This paper reviews the current status and recent modelling and assimilation advances with regards to the stratosphere at ECMWF. The future evolution of ECMWF's Earth System model and assimilation are outlined with a particular focus on the upper atmosphere. Examples are also shown of stratosphere-troposphere coupling for extended-range timescales, while discussing selected processes and their simulation that could improve this aspect of longer-range predictive skill.</p>

BT - ECMWF Technical Memoranda
DA - 01/2021
DO - 10.21957/25hegfoq
LA - eng
M1 - 877
N2 - <p>
  Accurate representation of the stratosphere in NWP models is important for accurate analysis/reanalysis products. It is also important for extended-range and seasonal forecasting because stratospheric variability can influence tropospheric weather patterns on these timescales. This paper reviews the current status and recent modelling and assimilation advances with regards to the stratosphere at ECMWF. The future evolution of ECMWF's Earth System model and assimilation are outlined with a particular focus on the upper atmosphere. Examples are also shown of stratosphere-troposphere coupling for extended-range timescales, while discussing selected processes and their simulation that could improve this aspect of longer-range predictive skill.</p>

PB - ECMWF
PY - 2021
T2 - ECMWF Technical Memoranda
TI - Stratospheric modelling and assimilation
UR - https://www.ecmwf.int/node/19875
ER -