Decadal-scale changes in the effect of the QBO on the northern stratospheric polar vortex by Lu, H, Baldwin, M, Gray, L, Jarvis, M

“…This study documents decadal-scale changes in the Holton and Tan (HT) relationship, i.e., the influence of the lower stratospheric equatorial quasi-biennial oscillation (QBO) on the northern hemisphere (NH) extratropical. circulation. Using a combination of ECMWF ERA-40 Reanalysis and Operational data from 1958-2006, we find that the Arctic stratosphere is indeed warmer under easterly QBO and colder under westerly QBO. …”

Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH by Kerkweg, A, Jöckel, P, Pozzer, A, Tost, H, Sander, R, Schulz, M, Stier, P, Vignati, E, Wilson, J, Lelieveld, J

“…The aerosol pH ranges from alkaline aerosol in areas of strong production down to pH-values of 1 over regions of medium sea salt production and high levels of gas phase acids, mostly polluted regions over the oceans in the Northern Hemisphere.…”

Comparison of American and European practices in the management of patients with primary immunodeficiencies. by Hernandez-Trujillo, H, Chapel, H, Lo Re, V, Notarangelo, L, Gathmann, B, Grimbacher, B, Boyle, J, Hernandez-Trujillo, V, Scalchunes, C, Boyle, M, Orange, J

“…This study was devised in order to compare management of these diseases in the northern hemisphere, given the variability of practice among clinicians in North America. …”

Polar vortices on Earth and Mars: A comparative study of the climatology and variability from reanalyses by Mitchell, D, Montabone, L, Thomson, S, Read, P

“…Unlike on Earth, it is found that the Martian polar vortices are annular, and that the Northern Hemisphere vortex is far stronger than its southern counterpart. …”

Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere, Part I: model description, sea salt aerosols and pH by Kerkweg, A, Jöckel, P, Pozzer, A, Tost, H, Sander, R, Schulz, M, Stier, P, Vignati, E, Wilson, J, Lelieveld, J

“…The aerosol pH ranges from alkaline aerosol in areas of strong production down to pH values of 1 over regions of medium sea salt production and high levels of gas phase acids, mostly polluted regions over the oceans in the northern hemisphere.…”

Stratospheric circulation in seasonal forecasting models: Implications for seasonal prediction by Maycock, A, Keeley, S, Charlton-Perez, A, Doblas-Reyes, F

“…In this study we assess the ability of five seasonal forecasting models to simulate the Northern Hemisphere extra-tropical winter-time stratospheric circulation. …”

Characteristics of Titan's stratospheric aerosols and condensate clouds from Cassini CIRS far-infrared spectra by de Kok, R, Irwin, P, Teanby, N, Nixon, C, Jennings, D, Fletcher, L, Howett, C, Calcutt, S, Bowles, N, Flasar, F, Taylor, F

“…Haze B is much more abundant in the northern hemisphere compared to the southern hemisphere. …”

A modified matrix model to describe the seasonal population ecology of the European tick Ixodes ricinus by Dobson, ADM, Finnie, T, Randolph, S

“…The sheep tick Ixodes ricinus is the most multicompetent vector in Europe, which is responsible for significant diseases of humans and livestock throughout the northern hemisphere. Modelling the tick's complex seasonal dynamics, upon which pathogen transmission potential depends, underpins the analysis of tick-borne disease risk and potential tick control. …”

Genome sequence and genetic diversity of European ash trees by Sollars, E, Harper, A, Kelly, L, Sambles, C, Ramirez-Gonzalez, R, Swarbreck, D, Kaithakottil, G, Cooper, E, Uauy, C, Havlickova, L, Worswick, G, Studholme, D, Zohren, J, Salmon, D, Clavijo, B, Li, Y, He, Z, Fellgett, A, Vig McKinney, L, Nielsen, L, Douglas, G, Kjaer, E, Downie, J, Boshier, D, Lee, S, Clark, J, Grant, M, Bancroft, I, Caccamo, M, Buggs, R

“…Ash trees (genus Fraxinus, Oleaceae) are widespread throughout the Northern Hemisphere, but are being devastated in Europe by the fungus Hymenoscyphus fraxineus, causing ash dieback (ADB), and in North America by the Emerald Ash Borer (EAB), Agrilus planipennis1,2. …”

Saturn’s tropospheric particles phase function and spatial distribution from Cassini ISS 2010–11 observations by Pérez-Hoyos, S, Sanz-Requena, J, Sánchez-Lavega, A, Irwin, P, Smith, A

“…Results for the particle phase function are also used to describe the spatial distribution of tropospheric particles both vertically and latitudinally in the Northern hemisphere.…”

In a nutshell: Using structural and chemical changes to establish the charring conditions of archaeological hazelnut shells by Holguin, A, Charles, M, Mithen, S, Schulting, R

“…Charred hazel (Corylus sp.) nutshells are found in abundance at many archaeological sites across the northern hemisphere. This paper aims to investigate the conditions under which hazelnut shells can become charred, by comparing experimentally charred modern hazelnut shells with archaeological material shells from three western Scottish Mesolithic sites. …”

Saturn's tropospheric particles phase function and spatial distribution from Cassini ISS 2010-11 observations by Pérez-Hoyos, S, Sanz-Requena, J, Sánchez-Lavega, A, Irwin, P, Smith, A

“…Results for the particle phase function are also used to describe the spatial distribution of tropospheric particles both vertically and latitudinally in the Northern hemisphere.…”

Connecting the Greenland ice-core and U∕Th timescales via cosmogenic radionuclides: testing the synchroneity of Dansgaard–Oeschger events by Adolphi, F, Ramsey, CB, Erhardt, T, Edwards, RL, Cheng, H, Turney, CSM, Cooper, A, Svensson, A, Rasmussen, SO, Fischer, H, Muscheler, R

“…During the last glacial period Northern Hemisphere climate was characterized by extreme and abrupt climate changes, so-called Dansgaard–Oeschger (DO) events. …”

Radiocarbon dating from Yuzhniy Oleniy Ostrov cemetery reveals complex human responses to socio-ecological stress during the 8.2 ka cooling event by Schulting, RJ, Mannermaa, K, Tarasov, PE, Higham, T, Ramsey, CB, Khartanovich, V, Moiseyev, V, Gerasimov, D, O’Shea, J, Weber, A

“…This coincides remarkably closely with the 8.2 ka cooling event, the most dramatic climatic downturn in the Holocene in the northern hemisphere, inviting an interpretation in terms of human response to a climate-driven environmental change. …”

Summer Nighttime Anomalies of Ionospheric Electron Content at Midlatitudes: Comparing Years of Low and High Solar Activities Using Observations and Tidal/Planetary Wave Features by Yu Yin, Guillermo González-Casado, Adrià Rovira-Garcia, José Miguel Juan, Jaume Sanz, Yixie Shao

“…The presence of MSNAs in the northern hemisphere was clearly supported by the migrating tide SW2 in combination with DE1. …”
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Climate-driven land surface phenology advance is overestimated due to ignoring land cover changes by Yuhao Pan, Dailiang Peng, Jing M Chen, Ranga B Myneni, Xiaoyang Zhang, Alfredo R Huete, Yongshuo H Fu, Shijun Zheng, Kai Yan, Le Yu, Peng Zhu, Miaogen Shen, Weimin Ju, Wenquan Zhu, Qiaoyun Xie, Wenjiang Huang, Zhengchao Chen, Jingfeng Huang, Chaoyang Wu

“…Here, we analyzed how satellite-derived GUD from 1992 to 2020 was impacted by changes in temperature, precipitation, standardized precipitation evapotranspiration index (SPEI), solar radiation, and LCC for the Northern Hemisphere (>30° N). While the climate variables had larger impact overall, variability in GUD was controlled by LCC for 6% of the Northern Hemisphere, with systematically earlier or later changes among transitions between different land cover types. …”
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Temperature, air pollution, and mortality from myocardial infarction in São Paulo, Brazil by Sharovsky R., César L.A.M., Ramires J.A.F.

“…An increase in daily mortality from myocardial infarction has been observed in association with meteorological factors and air pollution in several cities in the world, mainly in the northern hemisphere. The objective of the present study was to analyze the independent effects of environmental variables on daily counts of death from myocardial infarction in a subtropical region in South America. …”
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Late-Middle Pleistocene Sedimentary Environment and Climate Variation in North Hebei Plain, China: Evidence from the SHBZK-1 Core by Zhirong Liu, Jun Shen, Xunye Dai, Xuankai Jiao

“…Furthermore, variations of the magnetic susceptibility and lithofacies reflect the intensity and fluctuations of Asian monsoons and couple well with glacial-interglacial cycles, suggesting that the variation of ice volume in the Northern Hemisphere drives climate change in the Hebei Plain, which, in turn, regulates the variation of the sedimentary environment and facies through controlling precipitation changes, as well as the input amount of magnetic minerals. …”
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An objective approach to predict the spatial property of anomalous rain-belt of Meiyu by Rong Yu, Panmao Zhai

“…Through additional consideration of North Atlantic Oscillation (NAO), which has great contribution to circulation in the Northern Hemisphere mid-high latitudes, the anomalous key circulation features in 2020 can be appropriately captured. …”
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Characterisation, prevalence and severity of skin lesions caused by ophidiomycosis in a population of wild snakes by Steven J. R. Allain, David I. Leech, Kevin Hopkins, Katharina Seilern-Moy, Julia Rodriguez-Ramos Fernandez, Richard A. Griffiths, Becki Lawson

“…Abstract Ophidiomycosis is an emerging infectious disease affecting wild snakes in the Northern Hemisphere. Recently confirmed in Great Britain, the prevalence, severity and significance of ophidiomycosis has yet to be characterised in free-living snakes at a population level in Europe. …”
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