The Lagrangian structure of ozone mini-holes and potential vorticity anomalies in the Northern Hemisphere by P. M. James, P. M. James, P. M. James, P. M. James, D. Peters

“…The tracks of mini-hole events recorded during the TOMS observation period over the Northern Hemisphere provide a database for building anomaly fields of various meteorological parameters, following each mini-hole center in a Lagrangian sense. …”
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Extensive geographic mosaicism in avian influenza viruses from gulls in the northern hemisphere. by Michelle Wille, Gregory J Robertson, Hugh Whitney, Mary Anne Bishop, Jonathan A Runstadler, Andrew S Lang

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LONG-TERM FLUCTUATIONS OF NORTHERN HEMISPHERE ATMOSPHERIC CIRCULATION ACCORDING TO DZERDZEEVSKII’S CLASSIFICATION by Nina Kononova

“…The long-term series of fluctuation of monthly and annual Northern Hemisphere atmospheric circulation in non-tropical latitudes from 1899 to 2008 according to Dzerdzeevskii classification have been discussed. …”
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Uniform temperature dependency in the phenology of a keystone herbivore in lakes of the Northern Hemisphere. by Dietmar Straile, Rita Adrian, Daniel E Schindler

“…We tested this model with long-term time-series data from two lakes (Müggelsee, Germany; Lake Washington, USA), and with observations from a diverse set of 49 lakes/sites distributed widely across the Northern Hemisphere (NH). The model successfully captured the observed temporal variation of Daphnia phenology in the two case study sites (r(2) = 0.25 and 0.39 for Müggelsee and Lake Washington, respectively) and large-scale spatial variation in the NH (R(2) = 0.57). …”
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Temporal Changes in Coupled Vegetation Phenology and Productivity are Biome-Specific in the Northern Hemisphere by Lanhui Wang, Rasmus Fensholt

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Projected phenological shifts in stratification and overturning of ice-covered Northern Hemisphere lakes by Lei Huang, R. Iestyn Woolway, Axel Timmermann, Keith B. Rodgers

“…Using sub-daily simulations from a fully coupled numerical Earth system model, we assess phenological changes in stratification and overturning in Northern Hemisphere ice-covered lakes. We find the total stratification duration (comprising both summer and winter phases) is projected to decrease by 0.7, 4.6, and 6.9 days in 2029, 2067, and 2096, respectively, under global temperature increases of 1.5 °C, 3 °C, and 4.5 °C. …”
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Data-driven quantification of nitrogen enrichment impact on Northern Hemisphere plant biomass by Yongwen Liu, Shilong Piao, David Makowski, Philippe Ciais, Thomas Gasser, Jian Song, Shiqiang Wan, Josep Peñuelas, Ivan A Janssens

“…We quantified the response of terrestrial natural vegetation biomass to N enrichment in the Northern Hemisphere (>30° N) by scaling up data from 773 field observations (142 sites) of the response of biomass to N enrichment using machine-learning algorithms. …”
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Disentangling the Effects of Atmospheric and Soil Dryness on Autumn Phenology across the Northern Hemisphere by Kangbo Dong, Xiaoyue Wang

“…Using satellite observations and meteorological data, we examined the impacts of VPD and SM on the end of the growing season (EOS) across the Northern Hemisphere (>30°N) from 1982 to 2022. We found that VPD and SM were as important as temperature, precipitation, and radiation in controlling the variations in the EOS. …”
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The First Miniature, Small Foliose, Brown <i>Xanthoparmelia</i> in the Northern Hemisphere by Guillermo Amo de Paz, Pradeep K. Divakar, Ana Crespo, Helge Thorsten Lumbsch, Víctor J. Rico

“…We discuss the unique presence of a subcrustose <i>Xanthoparmelia</i> species lacking cortical usnic acid in the Northern Hemisphere. This species fits phylogenetically into a clade that was previously only known from the Southern Hemisphere, and hence represents another example of N-S disjunction in lichenized fungi.…”
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Constraining the Varied Response of Northern Hemisphere Winter Circulation Waviness to Climate Change by Yu Nie, Gang Chen, Jian Lu, Wenyu Zhou, Yang Zhang

“…Abstract While a large latitudinal displacement of the westerly jet brings about disproportionate socioeconomic impacts over Northern Hemisphere midlatitude continents, it is not well understood as to whether the winter circulation will become wavier or less in response to climate change. …”
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Effect of seasonal snow on the start of growing season of typical vegetation in Northern Hemisphere by Xiaodan Guan, Shuyang Guo, Jianping Huang, Xiaohan Shen, Li Fu, Guolong Zhang

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Interglacials of the Quaternary defined by northern hemispheric land ice distribution outside of Greenland by Peter Köhler, Roderik S. W. van de Wal

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Anomalous Arctic warming linked with severe winter weather in Northern Hemisphere continents by Judah Cohen, Jennifer A. Francis, Karl Pfeiffer

“…The expanded index is analyzed to reveal relationships between Arctic air temperatures/pressures and the probability of severe winter weather across the Northern Hemisphere midlatitudes. Here we find a direct and quasilinear relationship between anomalously high Arctic temperatures/pressures and increased severe winter weather, especially in northeastern continental regions downstream of maximum regional Arctic warming. …”
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Observed connections of Arctic stratospheric ozone extremes to Northern Hemisphere surface climate by Diane J Ivy, Susan Solomon, Natalia Calvo, David W J Thompson

“…We present observational evidence for linkages between extreme Arctic stratospheric ozone anomalies in March and Northern Hemisphere tropospheric climate in spring (March–April). …”
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Northern Hemisphere winter atmospheric teleconnections are intensified by extratropical ocean-atmosphere coupling by Masato Mori, Yu Kosaka, Bunmei Taguchi, Hiroki Tokinaga, Hiroaki Tatebe, Hisashi Nakamura

“…Here, we use coupled and uncoupled large-ensemble global model simulations to clarify how the coupling intensifies atmospheric teleconnection patterns in the Northern Hemisphere winter. We show that the extratropical coupling selectively enhances the variance of three principal modes of variability, explaining 13%, 11%, and 10% of the total variance of Pacific/North American, North Atlantic Oscillation, and Warm-Arctic Cold-Eurasian patterns, respectively. …”
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Variability of residence time in the Tropical Tropopause Layer during Northern Hemisphere winter by K. Krüger, S. Tegtmeier, M. Rex

“…The analysis is based on a Lagrangian approach using offline calculated diabatic heating rates as vertical velocities, covering Northern Hemisphere (NH) winters from 1962–2004. &lt;br&gt;&lt;br&gt; The residence time &amp;tau;&lt;sub&gt;LCP&amp;ndash;400 K&lt;/sub&gt;, being the duration time of air parcels in the layer between the Lagrangian Cold Point (LCP) and 400 K, varies spatially and is longer (&amp;gt;50 days) over the maritime continent as the LCP is lowest there (&amp;lt;370 K). …”
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Bicentennial Volcanic Activity Cycles and Their Long-Term Impact on Northern Hemisphere Climate by Maxim Ogurtsov

“…A cyclicity with a period of 188–250 years was found to be present in both the Northern Hemisphere temperature and volcanic activity. These cycles were found to be negatively correlated with the correlation coefficients, reaching values of −0.61–−0.68 over the entire time interval. …”
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Classification of Northern Hemisphere stratospheric ozone and water vapor profiles by meteorological regime by M. B. Follette-Cook, R. D. Hudson, G. E. Nedoluha

“…The subtropical and polar upper troposphere fronts and the polar vortex serve as the boundaries to divide the Northern Hemisphere into four meteorological regimes. These regimes are defined as (1) the arctic regime – within the polar vortex, (2) the polar regime – between the polar front and the polar vortex, or when the latter is not present, the pole, (3) the midlatitude regime – between the subtropical and polar fronts, and (4) the tropical regime – between the equator and the subtropical front. …”
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Reconstruction of Northern Hemisphere 1950&ndash;2010 atmospheric non-methane hydrocarbons by D. Helmig, V. Petrenko, P. Martinerie, E. Witrant, T. Röckmann, A. Zuiderweg, R. Holzinger, J. Hueber, C. Thompson, J. W. C. White, W. Sturges, A. Baker, T. Blunier, D. Etheridge, M. Rubino, P. Tans

“…Comparison of the reconstructed NMHC histories with 1950–2000 volatile organic compounds (VOC) emissions data and with other recently published ethane trend analyses from ambient air Pacific transect data showed (a) better agreement with North America and Western Europe emissions than with total Northern Hemisphere emissions data, and (b) better agreement with other Greenland firn air data NMHC history reconstructions than with the Pacific region trends. …”
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Evaluation of NeQuick2 Model over Mid-Latitudes of Northern Hemisphere by Lingxuan Wang, Erhu Wei, Si Xiong, Tengxu Zhang, Ziyu Shen

“…As one of the most commonly used three-dimensional ionospheric models, it is necessary to objectively evaluate the accuracy and stability of NeQuick2 over a long period, especially over the mid-latitudes of the northern hemisphere where most of the ground-based GNSS stations are distributed. …”
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