2023

Harrison, R. Giles ORCID: https://orcid.org/0000-0003-0693-347X, Escobar Ruiz, Veronica, Nicoll, Keri and Ambaum, Maarten H. P. ORCID: https://orcid.org/0000-0002-6824-8083 (2023) Isolated corona current monitoring using a compensated light-emitting diode as an unpowered sensor. Review of Scientific Instruments, 94 (9). 094504. ISSN 1089-7623 doi: https://doi.org/10.1063/5.0170176

Harrison, Giles ORCID: https://orcid.org/0000-0003-0693-347X, Nicoll, Keri and Ambaum, Maarten ORCID: https://orcid.org/0000-0002-6824-8083 (2023) Charge in non-thunderstorm clouds and fogs. In: Electrostatics 2023, 4-7 Sept 2023, Uxbridge, UK. (In Press) (Journal of Physics: Conference Series)

Nicoll, Keri, Escobar Ruiz, Veronica, Harrison, Giles ORCID: https://orcid.org/0000-0003-0693-347X, Ambaum, Maarten ORCID: https://orcid.org/0000-0002-6824-8083 and Alkamali, Ahmad (2023) A charge emitter for use in evaluating aircraft rainfall enhancement. Journal of Physics: Conference Series. ISSN 1742-6588 (In Press)

Miller, Caleb, Nicoll, Keri, Westbrook, Chris and Harrison, Giles ORCID: https://orcid.org/0000-0003-0693-347X (2023) The effect of fog on atmospheric electric fields. Journal of Physics: Conference Series. ISSN 1742-6588 (In Press)

2022

Nicoll, K. A., Readle, A., Al Kamali, A. and Harrison, R. G. ORCID: https://orcid.org/0000-0003-0693-347X (2022) Surface atmospheric electric field variability at a desert site. Journal of Atmospheric and Solar-Terrestrial Physics, 241. 105977. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2022.105977

Harrison, Giles ORCID: https://orcid.org/0000-0003-0693-347X, Nicoll, Keri, Joshi, Manoj and Hawkins, Ed ORCID: https://orcid.org/0000-0001-9477-3677 (2022) Empirical evidence for multidecadal scale global atmospheric electric circuit modulation by the El Niño-southern oscillation. Environmental Research Letters. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/aca68c (In Press)

Harrison, Giles ORCID: https://orcid.org/0000-0003-0693-347X and Nicoll, Keri (2022) The electricity of extensive layer clouds. Weather, 77 (11). pp. 379-383. ISSN 0043-1656 doi: https://doi.org/10.1002/wea.4307 (Special Issue: 250th anniversary of Luke Howard)

Schön, Martin, Nicoll, Keri Anne, Büchau, Yann Georg, Chindea, Stefan, Platis, Andreas and Bange, Jens (2022) Fair weather atmospheric charge measurements with a small UAS. Journal of Atmospheric and Oceanic Technology, 39 (11). pp. 1799-1813. ISSN 1520-0426 doi: https://doi.org/10.1175/JTECH-D-22-0025.1

Harrison, R. Giles ORCID: https://orcid.org/0000-0003-0693-347X, Nicoll, Keri A., Marlton, Graeme J., Tilley, Douglas J. and Iravani, Pejman (2022) Ionic charge emission into fog from a remotely piloted aircraft. Geophysical Research Letters, 49 (19). e2022GL099827. ISSN 0094-8276 doi: https://doi.org/10.1029/2022GL099827

Tacza, J., Nicoll, K. A. and Macotela, E. (2022) Periodicities in fair weather potential gradient data from multiple stations at different latitudes. Atmospheric Research, 276. 106250. ISSN 0169-8059 doi: https://doi.org/10.1016/j.atmosres.2022.106250

Harrison, R. Giles, Marlton, Graeme J., Ambaum, Maarten H. P. ORCID: https://orcid.org/0000-0002-6824-8083 and Nicoll, Keri A. (2022) Modifying natural droplet systems by charge injection. Physical Review Research, 4 (2). L022050. ISSN 2643-1564 doi: https://doi.org/10.1103/PhysRevResearch.4.L022050

2021

Airey, Martin W., Nicoll, Keri A., Harrison, R. Giles and Marlton, Graeme J. (2021) Characteristics of desert precipitation in the UAE derived from a ceilometer dataset. Atmosphere, 12 (10). 1245. ISSN 2073-4433 doi: https://doi.org/10.3390/atmos12101245

Tacza Anaya, Jose C., Nicoll, Keri A., Macotela, Edith L., Kubicki, Marek, Odzimek, Anna and Manninen, Jyrki (2021) Measuring global signals in the potential gradient at high latitude sites. Frontiers in Earth Science, 8. ISSN 2296-6463 doi: https://doi.org/10.3389/feart.2020.614639

Harrison, Giles, Nicoll, Keri, Tilley, Douglas J., Marlton, Graeme, Chindea, Stefan, Dingley, Gavin P., Iravani, Pejman, Cleaver, David J., duBois, Jonathan L. and Brus, David (2021) Demonstration of a remotely piloted atmospheric measurement and charge release platform for geoengineering. Journal of Atmospheric and Oceanic Technology, 38 (1). pp. 63-75. ISSN 1520-0426 doi: https://doi.org/10.1175/JTECH-D-20-0092.1

Hunting, Ellard R., Matthews, James, Fernández de Arróyabe Hernáez, Pablo, England, Sam J., Kourtidis, Konstantinos, Koh, Kuang, Nicoll, Keri, Harrison, R. Giles, Manser, Konstantine, Price, Colin, Dragovic, Snezana, Cifra, Michal, Odzimek, Anna and Robert, Daniel (2021) Challenges in coupling atmospheric electricity with biological systems. International Journal of Biometeorology, 65. pp. 45-58. ISSN 1432-1254 doi: https://doi.org/10.1007/s00484-020-01960-7

2020

Nicoll, Keri, Harrison, Giles, Marlton, Graeme J and Airey, Martin W (2020) Consistent dust electrification from Arabian Gulf sea breezes. Environmental Research Letters, 15 (8). 084050. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/ab9e20

Harrison, Giles, Nicoll, Keri, Mareev, Evgeny, Slyunyaev, Nikolay and Rycroft, Michael (2020) Extensive layer clouds in the global electric circuit: their effects on vertical charge distribution and storage. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 476 (2238). 20190758. ISSN 1471-2946 doi: https://doi.org/10.1098/rspa.2019.0758

Harrison, R. Giles, Nicoll, Keri A., Ambaum, Maarten H. P., Marlton, Graeme J., Aplin, Karen L. and Lockwood, Michael (2020) Precipitation modification by ionization. Physical Review Letters, 124 (19). 198701. ISSN 0031-9007 doi: https://doi.org/10.1103/PhysRevLett.124.198701

2019

Harrison, Giles, Marlton, Graeme, Aplin, Karen L. and Nicoll, Keri A. (2019) Shear-induced electrical changes in the base of thin layer cloud. Quarterly Journal of the Royal Meteorological Society, 145 (725). pp. 3667-3679. ISSN 1477-870X doi: https://doi.org/10.1002/qj.3648

Shatalina, M. V., Mareev, E. A., Klimenko, V. V., Kuterin, F. A. and Nicoll, K. A. (2019) Experimental study of diurnal and seasonal variations in the atmospheric electric field. Radiophysics and Quantum Electronics, 62 (3). pp. 183-191. ISSN 1573-9120 doi: https://doi.org/10.1007/s11141-019-09966-x

Dexheimer, Darielle, Airey, Martin, Roesler, Erika, Longbottom, Casey, Nicoll, Keri, Kneifel, Stefan, Mei, Fan, Harrison, Giles, Marlton, Graeme and Williams, Paul (2019) Evaluation of ARM Tethered Balloon System instrumentation for supercooled liquid water and distributed temperature sensing in mixed-phase Arctic clouds. Atmospheric Measurement Techniques, 12 (12). pp. 6845-6864. ISSN 1867-8548 doi: https://doi.org/10.5194/amt-12-6845-2019

Nicoll, Keri, Airey, Martin, Cimarelli, Corrado, Bennett, Alec, Harrison, Giles, Gaudin, Damien, Aplin, Karen, Koh, Kuang Liang, Knuever, Marco and Marlton, Graeme (2019) First in‐situ observations of gaseous volcanic plume electrification. Geophysical Research Letters, 46 (6). pp. 3532-3539. ISSN 0094-8276 doi: https://doi.org/10.1029/2019GL082211

Nicoll, K. A., Harrison, R. G., Barta, V., Bor, J., Brugge, R., Chillingarian, A., Chum, J., Georgoulias, A. K., Guha, A., Kourtidis, K., Kubicki, M., Mareev, E., Matthews, J., Mkrtchyan, H., Odzimek, A., Raulin, J.-P., Robert, D., Silva, H. G., Tacza, J., Yair, Y. and Yaniv, R. (2019) A global atmospheric electricity monitoring network for climate and geophysical research. Journal of Atmospheric and Solar-Terrestrial Physics, 184. pp. 18-29. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2019.01.003

2018

Harrison, R. G. and Nicoll, K. A. (2018) Fair weather criteria for atmospheric electricity measurements. Journal of Atmospheric and Solar-Terrestrial Physics, 179. pp. 239-250. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2018.07.008

Harrison, R. Giles, Nicoll, Keri A., Marlton, Graeme J., Ryder, Claire L. and Bennett, A. J. (2018) Saharan dust plume charging observed over the UK. Environmental Research Letters, 13 (5). 054018. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/aabcd9

Nicoll, K. A., Harrison, R. G., Silva, H. G., Salgado, R., Melgao, M. and Bortoli, D. (2018) Electrical sensing of the dynamical structure of the planetary boundary layer. Atmospheric Research, 202. pp. 81-95. ISSN 0169-8059 doi: https://doi.org/10.1016/j.atmosres.2017.11.009

2017

Harrison, Giles, Nicoll, Keri, Marlton, Graeme, Williams, Paul and Airey, Martin (2017) A self-calibrating wide range electrometer for in-cloud measurements. Review of Scientific Instruments, 88 (12). 126109. ISSN 0034-6748 doi: https://doi.org/10.1063/1.5011177

Airey, Martin, Harrison, Giles, Nicoll, Keri, Williams, Paul and Marlton, Graeme (2017) A miniature oscillating microbalance for sampling ice and volcanic ash from a small airborne platform. Review of Scientific Instruments, 88 (8). 086108. ISSN 0034-6748 doi: https://doi.org/10.1063/1.4998971

Harrison, R. Giles, Nicoll, Keri A. and Aplin, K. L. (2017) Evaluating stratiform cloud base charge remotely. Geophysical Research Letters, 44 (12). pp. 6407-6412. ISSN 0094-8276 doi: https://doi.org/10.1002/2017GL073128

Sanchez, Kevin J., Roberts, Gregory C., Calmer, Radiance, Nicoll, Keri, Hashimshoni, Eyal, Rosenfeld, Daniel, Ovadnevaite, Jurgita, Preissler, Jana, Ceburnis, Darius, O'Dowd, Colin and Russell, Lynn M. (2017) Top-down and bottom-up aerosol–cloud closure: towards understanding sources of uncertainty in deriving cloud shortwave radiative flux. Atmospheric Chemistry and Physics, 17 (16). pp. 9797-9814. ISSN 1680-7316 doi: https://doi.org/10.5194/acp-17-9797-2017

2016

Lorenz, Ralph D., Neakrase, Lynn D. V., Anderson, John P., Harrison, R. Giles and Nicoll, Keri A. (2016) Point discharge current measurements beneath dust devils. Journal of Atmospheric and Solar-Terrestrial Physics, 150-151. pp. 55-60. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2016.10.017

Sliva, H. G., Lopes, F. M., Pereira, S., Nicoll, Keri, Barbosa, S. M., Conceicao, R., Neves, S., Harrison, R. Giles and Collares Pereira, M. (2016) Saharan dust electrification perceived by a triangle of atmospheric electricity stations in Southern Portugal. Journal of Electrostatics, 84. pp. 106-120. ISSN 0304-3886 doi: https://doi.org/10.1016/j.elstat.2016.10.002

Harrison, R. Giles, Barth, E., Esposito, F., Merrison, J., Montmessin, F., Aplin, K. L., Borlina, C., Berthelier, J. J., Déprez, G., Farrell, W. M., Houghton, I. M. P., Renno, N. O., Nicoll, Keri A., Tripathi, S. N. and Zimmerman, M. (2016) Applications of electrified dust and dust devil electrodynamics to Martian atmospheric electricity. Space Science Reviews, 203 (1-4). pp. 299-345. ISSN 0038-6308 doi: https://doi.org/10.1007/s11214-016-0241-8

Yaniv, Roy, Yair, Yoav, Price, Colin, Nicoll, Keri, Harrison, Giles, Artamonov, Anton and Usoskin, Ilya (2016) Balloon measurements of the vertical ionization profile over southern Israel and comparison to mid-latitude observations. Journal of Atmospheric and Solar-Terrestrial Physics, 149. pp. 87-92. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2016.10.003

Petäjä, T., O'Connor, E. J., Moisseev, D., Sinclair, V. A., Manninen, A. J., Väänänen, R., von Lerber, A., Thornton, J. A., Nicoll, K., Petersen, W., Chandrasekar, V., Smith, J. N., Winkler, P. M., Kruger, O., Hakola, H., Timonen, H., Brus, D., Laurila, T., Asmi, E., Riekkola, M.-L., Mona, L., Massoli, P., Engelmann, R., Komppula, M., Wang, J., Kuang, C., Bäck, J., Virtanen, A., Levula, J., Ritsche, M. T. and Hickmon, N. (2016) BAECC: a field campaign to elucidate the impact of Biogenic Aerosols on Clouds and Climate. Bulletin of the American Meteorological Society, 97 (10). pp. 1909-1928. ISSN 1520-0477 doi: https://doi.org/10.1175/BAMS-D-14-00199.1

Nicoll, K. A. and Harrison, R. G. (2016) Stratiform cloud electrification: comparison of theory with multiple in-cloud measurements. Quarterly Journal of the Royal Meteorological Society, 142 (700). pp. 2679-2691. ISSN 1477-870X doi: https://doi.org/10.1002/qj.2858

Harrison, Giles, Marlton, Graeme, Williams, Paul and Nicoll, Keri (2016) Coordinated weather balloon solar radiation measurements during a solar eclipse. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 374 (2077). 20150221. ISSN 1364-503X doi: https://doi.org/10.1098/rsta.2015.0221 (themed issue: Atmospheric effects of solar eclipses stimulated by the 2015 UK eclipse)

Marlton, Graeme J., Williams, Paul D. and Nicoll, Keri A. (2016) On the detection and attribution of gravity waves generated by the 20 March 2015 solar eclipse. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 374 (2077). 20150222. ISSN 1364-503X doi: https://doi.org/10.1098/rsta.2015.0222 (themed issue: Atmospheric effects of solar eclipses stimulated by the 2015 UK eclipse)

Makhmutov, Vladimir, Bazilevskaya, G., Stozhkov, Y., Philippov, M., Yair, Y., Yaniv, R., Harrison, Giles and Nicoll, Keri (2016) Cosmic ray measurements in the atmosphere at several latitudes in October, 2014. In: The 34th International Cosmic Ray Conference, 30 July - 6th August 2015, The Hague, The Netherlands.

Lopes, Francisco, Silva, Hugo Gonçalves, Salgado, Rui, Potes, Miguel, Nicoll, Keri A. and Harrison, R. Giles (2016) Atmospheric electrical field measurements near a fresh water reservoir and the formation of the lake breeze. Tellus A: Dynamic Meteorology and Oceanography, 68. 31592. ISSN 1600-0870 doi: https://doi.org/10.3402/tellusa.v68.31592

Conceição, Ricardo, Melgão, Marta, Silva, Hugo G., Nicoll, Keri, Harrison, Richard G. and Reis, António H. (2016) Transport of the smoke plume from Chiado’s fire in Lisbon (Portugal) sensed by atmospheric electric field measurements. Air Quality, Atmosphere & Health, 9 (3). pp. 275-283. ISSN 1873-9318 doi: https://doi.org/10.1007/s11869-015-0337-4

2015

Mironova, I. A., Aplin, K. L., Arnold, F., Bazilevskaya, G. A., Harrison, R. G., Krivolutsky, A. A., Nicoll, K. A., Rozanov, E. V., Turunen, E. and Usoskin, I. (2015) Energetic particle influence on the Earth's atmosphere. Space Science Reviews, 194 (1-4). pp. 1-96. ISSN 0038-6308 doi: https://doi.org/10.1007/s11214-015-0185-4

Harrison, R. G., Nicoll, K. A. and Ambaum, M. H. P. (2015) On the microphysical effects of observed cloud edge charging. Quarterly Journal of the Royal Meteorological Society, 141 (692). pp. 2690-2699. ISSN 1477-870X doi: https://doi.org/10.1002/qj.2554 (Part A)

Harrison, R. Giles, Nicoll, Keri, Takahashi, Yukihiro and Yair, Yoav (2015) Focus on high energy particles and atmospheric processes. Environmental Research Letters, 10 (10). 100201. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/10/10/100201

Marlton, Graeme J., Giles Harrison, R., Nicoll, Keri A. and Williams, Paul D. (2015) Note: A balloon-borne accelerometer technique for measuring atmospheric turbulence. Review of Scientific Instruments, 86 (1). 016109. ISSN 0034-6748 doi: https://doi.org/10.1063/1.4905529

2014

Harrison, R. G., Nicoll, K. A. and Aplin, K. L. (2014) Vertical profile measurements of lower troposphere ionisation. Journal of Atmospheric and Solar-Terrestrial Physics, 119. pp. 203-210. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2014.08.006

Owens, M. J., Scott, C. J., Lockwood, M., Barnard, L., Harrison, R. G., Nicoll, K., Watt, C. and Bennett, A. J. (2014) Modulation of UK lightning by heliospheric magnetic field polarity. Environmental Research Letters, 9 (11). 115009. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/9/11/115009

Elhalel, Gal, Yair, Yoav, Nicoll, Keri, Price, Colin, Reuveni, Yuval and Harrison, R. Giles (2014) Influence of short-term solar disturbances on the fair weather conduction current. Journal of Space Weather and Space Climate, 4. A26. ISSN 2115-7251 doi: https://doi.org/10.1051/swsc/2014022

Nicoll, K. A. (2014) Space weather influences on atmospheric electricity. Weather, 69 (9). pp. 238-241. ISSN 1477-8696 doi: https://doi.org/10.1002/wea.2323

Nicoll, K. A. and Harrison, R. G. (2014) Detection of lower tropospheric responses to solar energetic particles at midlatitudes. Physical Review Letters, 112 (22). 225001. ISSN 0031-9007 doi: https://doi.org/10.1103/PhysRevLett.112.225001

Harrison, R. G. and Nicoll, K. A. (2014) Note: Active optical detection of cloud from a balloon platform. Review of Scientific Instruments, 85 (6). 066104. ISSN 0034-6748 doi: https://doi.org/10.1063/1.4882318

Silva, H. G, Conceição, R., Melgão, M., Nicoll, K., Mendes, P. B., Tlemçani, M., Reis, A. H. and Harrison, R. G. (2014) Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence. Environmental Research Letters, 9 (11). 114025. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/9/11/114025

2013

Marlton, Graeme, Harrison, R. Giles and Nicoll, Keri A. (2013) Atmospheric point discharge current measurements using a temperature-compensated logarithmic current amplifier. Review of Scientific Instruments, 84 (6). 066103. ISSN 0034-6748 doi: https://doi.org/10.1063/1.4810849

Harrison, R. G., Nicoll, K. A. and McWilliams, K. A. (2013) Space weather driven changes in lower atmosphere phenomena. Journal of Atmospheric and Solar-Terrestrial Physics, 98. pp. 22-30. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2013.03.008

Harrison, Giles G., Nicoll, Keri A. and Lomas, Andrew G. (2013) Geiger tube coincidence counter for lower atmosphere radiosonde measurements. Review of Scientific Instruments, 84 (7). 076103. ISSN 0034-6748 doi: https://doi.org/10.1063/1.4815832

Houghton, Isobel M. P., Aplin, Karen L. and Nicoll, Keri (2013) Triboelectric charging of volcanic ash from the 2011 Grímsvötn eruption. Physical Review Letters, 111 (11). 118501. ISSN 0031-9007 doi: https://doi.org/10.1103/PhysRevLett.111.118501

Nicoll, Keri (2013) A self-calibrating electrometer for atmospheric charge measurements from a balloon platform. Review of Scientific Instruments, 84 (9). 096107. ISSN 1089-7623 doi: https://doi.org/10.1063/1.4821500

2012

Rycroft, Michael J., Nicoll, Keri A., Aplin, Karen L. and Harrison, R. Giles (2012) Recent advances in global electric circuit coupling between the space environment and the troposphere. Journal of Atmospheric and Solar-Terrestrial Physics, 90-91. pp. 198-211. ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2012.03.015

Nicoll, K.A. (2012) Measurements of atmospheric electricity aloft. Surveys in Geophysics, 33 (5). pp. 991-1057. ISSN 1573-0956 doi: https://doi.org/10.1007/s10712-012-9188-9

Harrison, Giles, Nicoll, Keri and Lomas, Andrew (2012) Programmable data acquisition system for research measurements from meteorological radiosondes. Review of Scientific Instruments, 83 (3). 036106. ISSN 0034-6748 doi: https://doi.org/10.1063/1.3697717

Harrison, Giles and Nicoll, Kerianne (2012) Balloon-borne disposable radiometer for cloud detection. Review of Scientific Instruments, 83 (2). 025111. ISSN 0034-6748 doi: https://doi.org/10.1063/1.3685252

2011

Nicoll, K. A., Harrison, R. G. and Ulanowski, Z. (2011) Observations of Saharan dust layer electrification. Environmental Research Letters, 6 (1). 014001. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/6/1/014001

Nicoll, Kerianne and Harrison, Giles (2011) Charge measurements in stratiform cloud from a balloon based sensor. Journal of Physics: Conference Series (301). 012003. ISSN 1742-6588 doi: https://doi.org/10.1088/1742-6596/301/1/012003

2010

Nicoll, K. A. and Harrison, R. G. (2010) Experimental determination of layer cloud edge charging from cosmic ray ionisation. Geophysical Research Letters, 37 (13). L13802. ISSN 0094-8276 doi: https://doi.org/10.1029/2010GL043605

Harrison, Richard Giles, Nicoll, Kerianne, Ulanowski, Z. Joseph and Mather, Tamsin (2010) Self-charging of the Eyjafjallajökull volcanic ash plume. Environmental Research Letters, 5 (2). 024004. ISSN 1748-9326 doi: https://doi.org/10.1088/1748-9326/5/2/024004

2009

Nicoll, K A and Harrison, Richard Giles (2009) Vertical current flow through extensive layer clouds. Journal of Atmospheric and Solar-Terrestrial Physics, 71 (17-18). 2040-2046 . ISSN 1364-6826 doi: https://doi.org/10.1016/j.jastp.2009.09.011

Harrison, Richard Giles and Nicoll, K. A (2009) A lightweight balloon-carried cloud charge sensor. Review of Scientific Instruments, 80 (1). 014501. ISSN 0034-6748 doi: https://doi.org/10.1063/1.3065090

2008

Rycroft, Michael J., Harrison, R. Giles, Nicoll, K. A. and Mareev, Evgeny A. (2008) An overview of Earth's global electric circuit and atmospheric conductivity. Space Science Reviews, 137 (1-4). pp. 83-105. ISSN 0038-6308 doi: https://doi.org/10.1007/s11214-008-9368-6

Harrison, R.G. and Nicoll, K. A. (2008) Air-earth current density measurements at Lerwick; implications for seasonality in the global electric circuit. Atmospheric Research, 89 (1-2). pp. 181-193. ISSN 0169-8059 doi: https://doi.org/10.1016/j.atmosres.2008.01.008

Nicoll, K A and Harrison, R.G. (2008) A double-Gerdien instrument for simultaneous bipolar air conductivity measurements on balloon platforms. Review of Scientific Instruments, 79 (8). 084502 . ISSN 0034-6748 doi: https://doi.org/10.1063/1.2964927

Rycroft, Michael J., Harrison, R. Giles, Nicoll, Keri Anne and Mareev, Evgeny A. (2008) An overview of Earth’s global electric circuit and atmospheric conductivity. Space Science Reviews, 137 (1-4). pp. 83-105. ISSN 0038-6308 doi: https://doi.org/10.1007/s11214-008-9368-6