Results 81 to 90 of about 66,671 (212)
Quarterly Journal of the Royal Meteorological Society, EarlyView.Assimilation of AMSU‐A all‐sky observations can be increased up to fivefold if spatial observation‐error correlations are accounted for properly. New correlation estimates derived using data from ECMWF and the UK Met Office reveal that correlation length‐scales are between 75 and 150 km for AMSU‐A channels peaking in the troposphere. This is attributed
Rishabh Bhatt +9 more
wiley +1 more source
Chlorine peroxide reaction explains observed wintertime hydrogen chloride in the Antarctic vortex
Communications Earth & EnvironmentIt is well established that the drastic ozone loss in the Antarctic stratosphere, commonly known as the ozone hole, is primarily driven by gas-phase and heterogeneous chemical processes. While chemistry transport models generally reproduce observed ozone
Jens-Uwe Grooß +3 more
doaj +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.The Weak‐Constraint Four‐Dimensional Variational (WC‐4DVAR) system markedly improved the analysis and forecasting of the 2024 sudden stratospheric warming (SSW) event. It reduced biases and enhanced 7–9 day predictions of temperature across the SSW life cycle, with the most pronounced gains for winds also during the critical onset period.
Shaoying Li +5 more
wiley +1 more source
NASA GEOS Composition Forecast Modeling System GEOS‐CF v1.0: Stratospheric Composition
Journal of Advances in Modeling Earth Systems, 2022 The NASA Goddard Earth Observing System (GEOS) Composition Forecast (GEOS‐CF) provides recent estimates and 5‐day forecasts of atmospheric composition to the public in near‐real time.
K. E. Knowland +15 more
doaj +1 more source
, 2015 Extreme variability of the winter‐ and spring‐time stratospheric polar vortex has been shown to affect extratropical tropospheric weather. Therefore, reducing stratospheric forecast error may be one way to improve the skill of tropospheric weather ...
O. Tripathi +15 more
semanticscholar +1 more source
, 2014 . In this study we use the ERA-Interim reanalysis data set from the European Centre for Medium-Range Weather Forecasts (ECMWF) and a refined version of a previously developed Lagrangian methodology to compile a global 33 yr climatology of stratosphere ...
B. Škerlak, M. Sprenger, H. Wernli
semanticscholar +1 more source
The impact of dehydration and extremely low HCl values in the Antarctic stratospheric vortex in mid-winter on ozone loss in spring [PDF]
Atmospheric Chemistry and PhysicsSimulations of Antarctic chlorine and ozone chemistry in previous work show that in the core of the Antarctic vortex (16–18 km, 85–55 hPa, 390–430 K) HCl null cycles (initiated by reactions of Cl with CH4 and CH2O) are effective.
Y. Zhang-Liu +11 more
doaj +1 more source
Transport pathways from the Asian monsoon anticyclone to the stratosphere
, 2015 . Transport pathways of air originating in the upper-tropospheric Asian monsoon anticyclone are investigated based on three-dimensional trajectories. The Asian monsoon anticyclone emerges in response to persistent deep convection over India and southeast
H. Garny, W. Randel
semanticscholar +1 more source
Quantification of inmixing of Asian Monsoon air by multi-species classification in a match flight experiment [PDF]
Atmospheric Chemistry and PhysicsMixing of air between compartments of the atmosphere is fundamental to atmospheric composition. Such mixing is commonly studied using tracer-tracer correlations.
J. Kaumanns +8 more
doaj +1 more source
Global OZone Chemistry And Related trace gas Data records for the Stratosphere (GOZCARDS)
, 2015 . We describe the publicly available data from the Global OZone Chemistry And Related trace gas Data records for the Stratosphere (GOZCARDS) project and provide some results, with a focus on hydrogen chloride (HCl), water vapor (H2O), and ozone (O3 ...
L. Froidevaux +17 more
semanticscholar +1 more source