The HadGEM2 family of Met Office Unified Model climate configurations by Martin, G, Bellouin, N, Collins, W, Culverwell, I, Halloran, P, Hardiman, S, Hinton, T, Jones, C, McDonald, R, McLaren, A, O'Connor, F, Roberts, M, Rodriguez, J, Woodward, S, Best, M, Brooks, M, Brown, A, Butchart, N, Dearden, C, Derbyshire, S, Dharssi, I, Doutriaux-Boucher, M, Edwards, J, Falloon, P, Gedney, N

“…The HadGEM2 physical model includes improvements designed to address specific systematic errors encountered in the previous climate configuration, HadGEM1, namely Northern Hemisphere continental temperature biases and tropical sea surface temperature biases and poor variability. …”

Are cold winters in Europe associated with low solar activity? by Lockwood, M, Harrison, R, Woollings, T, Solanki, S

“…We identify regionally anomalous cold winters by detrending the Central England temperature (CET) record using reconstructions of the northern hemisphere mean temperature. We show that cold winter excursions from the hemispheric trend occur more commonly in the UK during low solar activity, consistent with the solar influence on the occurrence of persistent blocking events in the eastern Atlantic. …”

Modelling the atmospheric response to doubled CO2 and depleted stratospheric ozone using a stratosphere-resolving coupled GCM by Gillett, N, Allen, M, Williams, K

“…This effect is due to enhanced upward propagation of planetary waves from the troposphere, and is an effect found only in the northern hemisphere, probably because of its larger zonal asymmetries. …”

Predicting El Niño in 2014 and 2015 by Ineson, S, Balmaseda, M, Davey, M, Decremer, D, Dunstone, N, Gordon, M, Ren, H, Scaife, A, Weisheimer, A

“…Early in 2014 several forecast systems were suggesting a strong 1997/98-like El Niño event for the following northern hemisphere winter 2014/15. However the eventual outcome was a modest warming. …”

Reducing climate model biases by exploring parameter space with large ensembles of climate model simulations and statistical emulation by Li, S, Rupp, D, Hawkins, L, Mote, P, McNeall, D, Sparrow, S, Wallom, D, Betts, R, Wettstein, J

“…Understanding the unfolding challenges of climate change relies on climate models, many of which have large summer warm and dry biases over Northern Hemisphere continental midlatitudes. This work, with the example of the model used in the updated version of the weather@home distributed climate model framework, shows the potential for improving climate model simulations through a multiphased parameter refinement approach, particularly over the northwestern United States (NWUS). …”

Abrupt wind regime changes in the North Atlantic Ocean during the past 30,000-60,000 years by Lopez-Martinez, C, Grimalt, J, Hoogakker, B, Gruetzner, J, Vautravers, M, McCave, I

“…The observed variation was paralleled by changes in wind-blown dust and the polar circulation index in Greenland ice, which is in agreement with previously hypothesized atmospheric teleconnections between northern and middle-low latitudes of the Northern Hemisphere. The close correspondence between sedimentary and ice core proxies is evidence that crossings of the glacial climate thresholds involved major reorganizations of the troposphere. …”

Impact of Gulf Stream SST biases on the global atmospheric circulation by Lee, R, Woollings, T, Hoskins, B, Williams, K, O'Reilly, C, Masato, G

“…Together with the imposed Gulf Stream heating bias, the response affects the troposphere not only locally but also in remote regions of the Northern Hemisphere via a planetary Rossby wave response. …”

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, Joeckel, 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.…”

Revision of global carbon fluxes based on a reassessment of oceanic and riverine carbon transport by Resplandy, L, Keeling, R, Rödenbeck, C, Stephens, B, Khatiwala, S, Rodgers, K, Long, M, Bopp, L, Tans, P

“…This heat-based constraint requires a 20% to 100% stronger ocean and river carbon transport from the Northern Hemisphere to the Southern Hemisphere than existing estimates, and supports an upward revision of the global riverine carbon flux from 0.45 to 0.78 PgC/y. …”

Modelling the Late Devonian Climate: Implications for evolution and extinction by Mack, CLJ

“…The CGCM ocean also exhibits two ocean states, although the ‘unventilated’ equivalent is termed the partly-ventilated state since there is a weak, deep overturning circulation restricted to the Northern Hemisphere.</p>…”

Total synthesis and stereochemical reassignment of dehydromicrosclerodermin B and microsclerodermin J by Melikhova, E

“…Subsequently, AMMTD-GABOB dipeptide was synthesised and coupled with the northern hemisphere. An appropriate protecting group strategy was developed such that macrolactamisation and subsequent protecting group removal could be achieved. …”

Improved 11-year solar signal in the Freie Universität Berlin Climate Middle Atmosphere Model (FUB-CMAM) by Matthes, K, Langematz, U, Gray, L, Kodera, K, Labitzke, K

“…The experiments used realistic spectral solar irradiance changes, ozone changes from a two-dimensional radiative-chemical-transport model, and a relaxation toward observed equatorial wind profiles throughout the stratosphere. During Northern Hemisphere winter a realistic poleward downward propagation of the polar night jet (PNJ) anomalies, significantly weaker planetary wave activity, and a weaker mean meridional circulation under solar maximum conditions are reproduced in the model. …”

Evidence for nonlinearity in observed stratospheric circulation changes by Gillett, N, Baldwin, M, Allen, M

“…The leading mode of variability of the lower atmosphere circulation in the Northern Hemisphere is a largely zonally symmetric mode known as the Arctic Oscillation. …”

Equator-to-pole temperature differences and the extra-tropical storm track responses of the CMIP5 climate models by Harvey, B, Shaffrey, L, Woollings, T

“…There are large regions in which the storm track responses are correlated with the temperature difference responses, and a simple linear regression model based on the temperature differences at either level captures the spatial pattern of the mean storm track response as well explaining between 30 and 60 % of the inter-model variance of the storm track responses. In the northern hemisphere the responses of the two temperature differences are not significantly correlated and their associations with the storm track responses are more complicated. …”

A new actinopterygian from the Late Devonian Gogo formation, Western Australia by Choo, B, Lu, J, Giles, S, Trinajstic, K, Long, J

“…A phylogenetic analysis resolves the new form as sister taxon to fishes from the Late Devonian of the Northern Hemisphere and all post-Devonian actinopterygians, confirming that the assemblage of fossil ray fins from the Gogo Formation is part of the wider Devonian actinopterygian radiation .…”

Epidemiological issues in diabetic retinopathy. by Scanlon, P, Aldington, S, Stratton, I

“…Type 1 diabetes is more common in the Northern hemisphere with the highest rates in Finland and there is evidence of a rise in some central European countries, particularly in the younger children under 5 years of age. …”

Migration and stopover in a small pelagic seabird, the Manx shearwater Puffinus puffinus: insights from machine learning by Guilford, T, Meade, J, Willis, J, Phillips, R, Boyle, D, Roberts, S, Collett, M, Freeman, R, Perrins, C

“…Here we report a successful attempt, using miniature archival light loggers (geolocators), to elucidate the migratory behaviour of the Manx shearwater <em>Puffinus puffinus</em>, a small (400g) Northern Hemisphere breeding procellariform that undertakes a trans-equatorial, trans-Atlantic migration. …”

The Response of Precipitation Minus Evapotranspiration to Climate Warming: Why the “Wet-Get-Wetter, Dry-Get-Drier” Scaling Does Not Hold over Land by Byrne, MP, O’Gorman, PA

“…This drying tendency is shown to relate, in part, to the polar amplification of warming in the Northern Hemisphere, and to the amplified warming over continental interiors and on the eastern side of midlatitude continents.…”

The linear sensitivity of the North Atlantic Oscillation and eddy-driven jet to SSTs by Baker, H, Woollings, T, Forest, CE, Allen, MR

“…Given the impact of the NAO and jet on Northern Hemisphere weather and climate, these results provide useful information that could be used for improved attribution and forecasting.…”

Climate change and variability over Malaysia: gaps in science and research information by Fredolin T. Tangang, Liew, Juneng, Ester Salimun, Kwan, Meng Sei, Loh, Jui Le, Halimatun Muhamad

“…The mean precipitation is projected to decrease (increase) during Northern Hemisphere winter (summer). However, future variabilities associated with regional phenomena such as the monsoon, El Nino-Southern Oscillation (ENSO), Indian Ocean Dipole (IOD) and Madden-Julian Oscillation (MJO) are largely unknown. …”
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