Lina Boljka
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View article: Upstream influence of midlatitude jet stream biases in boreal summer
Upstream influence of midlatitude jet stream biases in boreal summer Open
Climate models exhibit biases in the mean state and in variability across different regions of the Earth. For example, atmosphere‐only models have a poleward bias in summertime jet streams across the Northern Hemisphere (NH). This can resu…
View article: Identifying quasi-periodic variability using multivariate empirical mode decomposition: a case of the tropical Pacific
Identifying quasi-periodic variability using multivariate empirical mode decomposition: a case of the tropical Pacific Open
A variety of statistical tools have been used in climate science to gain a better understanding of the climate system's variability on various temporal and spatial scales. However, these tools are mostly linear, stationary, or both. In thi…
View article: Potential impact of tropopause sharpness on jet latitude
Potential impact of tropopause sharpness on jet latitude Open
The wintertime extratropical general circulation may be viewed as being primarily governed by interactions between Rossby waves and the background flow. These Rossby waves propagate vertically and meridionally away from their sources and a…
View article: Potential Role of Inter-Basin Interactions in Eurasian Summer Blocking
Potential Role of Inter-Basin Interactions in Eurasian Summer Blocking Open
Atmospheric blocking events are persistent tropospheric weather patterns that are associated with extreme events, such as heatwaves. In the summer, they primarily occur at high latitudes, e.g., over northern Eurasia. However, blocking freq…
View article: Reply on AC1
Reply on AC1 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Reply on RC1
Reply on RC1 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Reply on RC2
Reply on RC2 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Reply on RC3
Reply on RC3 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Comment on wcd-2022-51
Comment on wcd-2022-51 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Climatological data from mechanistic model experiments of Boljka and Birner (2022/3; npj Climate and Atmospheric Science)
Climatological data from mechanistic model experiments of Boljka and Birner (2022/3; npj Climate and Atmospheric Science) Open
Some climatological output data from mechanistic dry dynamical core model experiments used for the paper of Boljka and Birner (2022/3): "Potential impact of tropopause sharpness on the structure and strength of the general circulation", np…
View article: Climatological data from mechanistic model experiments of Boljka and Birner (2022/3; npj Climate and Atmospheric Science)
Climatological data from mechanistic model experiments of Boljka and Birner (2022/3; npj Climate and Atmospheric Science) Open
Some climatological output data from mechanistic dry dynamical core model experiments used for the paper of Boljka and Birner (2022/3): "Potential impact of tropopause sharpness on the structure and strength of the general circulation", np…
View article: Comment on wcd-2022-51
Comment on wcd-2022-51 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Comment on wcd-2022-51
Comment on wcd-2022-51 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Reply on CC1
Reply on CC1 Open
Abstract. Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled…
View article: Identifying quasi-periodic variability using multivariate empirical mode decomposition: a case of the tropical Pacific
Identifying quasi-periodic variability using multivariate empirical mode decomposition: a case of the tropical Pacific Open
Tropical Pacific is home to climate variability on different timescales, including El Niño Southern Oscillation (ENSO) – one of the most prominent quasi-periodic modes of variability in the Earth’s climate system. It is a coupled atmospher…
View article: Metrics of the Hadley circulation strength and associated circulation trends
Metrics of the Hadley circulation strength and associated circulation trends Open
<p>This study compares trends of the Hadley cell (HC) strength using different metrics applied to the European Centre for Medium-range Weather Forecasts ERA5 and ERA-Interim reanalyses in the period 1979-2018. The HC strength is comm…
View article: Recent Hadley circulation strengthening: a trend or multidecadal variability?
Recent Hadley circulation strengthening: a trend or multidecadal variability? Open
<p>This study explores the possible drivers of the recent Hadley circulation strengthening in modern reanalyses. Predominantly, two recent generations of reanalyses provided by the European Centre for Medium-range Weather Forecasts (…
View article: Metrics of the Hadley circulation strength and associated circulation trends
Metrics of the Hadley circulation strength and associated circulation trends Open
This study compares trends in the Hadley cell (HC) strength using different metrics applied to the ECMWF ERA5 and ERA-Interim reanalyses for the period 1979–2018. The HC strength is commonly evaluated by metrics derived from the mass-weigh…
View article: Recent Hadley circulation strengthening: a trend or multidecadal variability?
Recent Hadley circulation strengthening: a trend or multidecadal variability? Open
<p>This study explores the possible drivers of the recent Hadley circulation strengthening in the modern reanalyses. Predominantly, two recent generations of reanalyses provided by the European Centre for Medium-Range Weather Forecas…
View article: Recent Hadley Circulation Strengthening: A Trend or Multidecadal Variability?
Recent Hadley Circulation Strengthening: A Trend or Multidecadal Variability? Open
This study explores the possible drivers of the recent Hadley circulation strengthening in the modern reanalyses. Predominantly, two recent generations of reanalyses provided by the European Centre for Medium-Range Weather Forecasts are us…
View article: Comment on wcd-2021-50
Comment on wcd-2021-50 Open
Abstract. This study compares trends in the Hadley cell (HC) strength using different metrics applied to the ECMWF ERA5 and ERA-Interim reanalyses for the period 1979â2018. The HC strength is commonly evaluated by metrics derived from th…
View article: Indices of the Hadley circulation strength and associated circulation trends
Indices of the Hadley circulation strength and associated circulation trends Open
This study compares the trends of Hadley cell (HC) strength using different HC measures applied to the ECMWF ERA5 and ERA-Interim reanalyses in the period 1979–2018. The HC strength is commonly evaluated by indices derived from the mass-we…
View article: Project RESCCCUE: &#8220;REminding Slovenian authorities Climate Change Crisis requires Urgent Effort&#8221;
Project RESCCCUE: “REminding Slovenian authorities Climate Change Crisis requires Urgent Effort” Open
<p>The project RESCCCUE aims at addressing the climate change action in Slovenia. We started the project in the autumn of 2019 when we have brought together over 100 leading Slovenian scientists, comprising meteorologists, climatolog…
View article: Downstream Suppression of Baroclinic Waves
Downstream Suppression of Baroclinic Waves Open
Baroclinic waves drive both regional variations in weather and large-scale variability in the extratropical general circulation. They generally do not exist in isolation, but rather often form into coherent wave packets that propagate to t…
View article: Tropopause-level planetary wave source and its role in two-way troposphere–stratosphere coupling
Tropopause-level planetary wave source and its role in two-way troposphere–stratosphere coupling Open
Atmospheric planetary waves play a fundamental role in driving stratospheric dynamics, including sudden stratospheric warming (SSW) events. It is well established that the bulk of the planetary wave activity originates near the surface. Ho…
View article: Response to Reviewer 1
Response to Reviewer 1 Open
The authors analyze the possible forcing mechanisms for a planetary wave source near the tropopause that subsequently propagates upwards.The authors identify two different mechanisms: nonlinear wave-wave interactions and subsequent resonan…
View article: review of Boljka and Birner
review of Boljka and Birner Open
Review of " Tropopause-level planetary wave source and its role in two-way" by Boljka and BirnerThe authors analyze the possible forcing mechanisms for a planetary wave source near the tropopause that subsequently propagates upwards.The au…