Dr Michaela Hegglin

Associate Professor in Atmospheric Chemistry

Web Pages:

My Research: http://www.met.reading.ac.uk/~qr903932

Responsibilities:

Visitor Programme Coordinator

Research Interests:

  • Chemistry-climate interactions
  • Stratospheric chemistry and transport
  • Stratospheric ozone, UV radiation, and environmental impacts
  • Greenhouse gas distributions and radiative forcing
  • Tropospheric ozone, air pollution, and transport
  • Atmospheric observations (ground-based, balloons, aircraft, space)
  • Atmosphere-biosphere interactions, biogeochemical cycles

Research Projects:

Postdoctoral & graduate student supervision

  • Ramiro Checa-Garcia (Postdoctoral Fellow, co-supervised by Keith Shine): works on the role of composition changes on decadal scale climate variability, in particular their contribution to surge and hiatus events (SMURPHS)
  • Ryan Williams (NERC Scenario DTP PhD student, co-supervised by Brian Kerridge (RAL) and Nicolas Bellouin): works on the influence of the stratosphere on tropospheric air pollution events using a combined model-measurement approach.

Please contact me to ask for available project topics.

Other interests

  • Science communication
  • Women in science

Recent Publications:

Publications for m.i.hegglin@reading.ac.uk

Jump to: 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2002
Number of items: 41.

2017

Davies, S. M., Hegglin, M. I. , Fujiwara, M., Dragani, R., Harada, Y., Kobayashi, C., Long, C. L., Manney, G. L., Nash, E. R., Potter, G. L., Tegtmeier, S., Wang, T., Wargan, K. and Wright, J. S. (2017) Assessment of upper tropospheric and stratospheric water vapor and ozone in reanalyses as part of S-RIP. Atmospheric Chemistry and Physics, 17 (20). pp. 12743-12778. ISSN 1680-7316 doi: 10.5194/acp-17-12743-2017

Manney, G. L., Hegglin, M. I., Lawrence, Z. D., Wargan, K., Millán, L. F., Schwartz, M. J., Santee, M. L., Lambert, A., Pawson, S., Knosp, B. W., Fuller, R. A. and Daffer, W. H. (2017) Reanalysis comparisons of upper tropospheric–lower stratospheric jets and multiple tropopauses. Atmospheric Chemistry and Physics, 17 (18). pp. 11541-11566. ISSN 1680-7316 doi: 10.5194/acp-17-11541-2017

Manney, G. L. and Hegglin, M. I. (2017) Seasonal and regional variations of long-term changes in upper-tropospheric jets from reanalyses. Journal of Climate. ISSN 1520-0442 (In Press)

Hegglin, M. I. (2017) Atmospheric science: the self-cleansing ability of prehistoric air. Nature, 546 (7656). pp. 41-43. ISSN 0028-0836 doi: 10.1038/546041a

Morgenstern, O., Hegglin, M., Rozanov, E., O'Connor, F. M., Abraham, N.L., Akiyoshi, H., Archibald, A., Bekki, S., Butchart, N., Chipperfield, M. P., Deushi, M., Dhomse, S. S., Garcia, R. R., Hardiman, S. C., Horowitz, L. W., Jöckel, P., Josse, B., Kinnison, D., Lin, M., Mancini, E., Manyin, M. E., Marchand, M., Marécal, V., Michou, M., Oman, L. D., Pitari, G., Plummer, D. A., Revell, L. E., Saint-Martin, D., Schofield, R., Stenke, A., Stone, K., Sudo, K., Tanaka, T. Y., Tilmes, S., Yamashita, Y., Yoshida, K. and Zeng, G. (2017) Review of the global models used within phase 1 of the Chemistry-Climate Model Initiative (CCMI). Geoscientific Model Development, 10 (2). pp. 639-671. ISSN 1991-9603 doi: 10.5194/gmd-10-639-2017

Collins, W. J., Lamarque, J.-F., Schulz, M., Boucher, O., Eyring, V., Hegglin, M. I., Maycock, A., Myhre, G., Prather, M., Shindell, D. and Smith, S. J. (2017) AerChemMIP: quantifying the effects of chemistry and aerosols in CMIP6. Geoscientific Model Development, 10 (2). pp. 585-607. ISSN 1991-9603 doi: 10.5194/gmd-10-585-2017

Fujiwara, M., Wright, J., Manney, G. L., Gray, L., Anstey, J., Birner, T., Davies, S., Gerber, E. P., Harvey, V. L., Hegglin, M. I., Homeyer, C. R., Knox, J. A., Krueger, K., Lambert, A., Long, C. S. and Martineau, P. (2017) Introduction to the SPARC Reanalysis Intercomparison Project (S-RIP) and overview of the reanalysis systems. Atmospheric Chemistry and Physics, 17 (2). pp. 1417-1452. ISSN 1680-7316 doi: 10.5194/acp-17-1417-2017

2016

Errera, Q., Ceccherini, S., Christophe, Y., Chabrillat, S., Hegglin, M. I., Lambert, A., Ménard, R., Raspollini, P., Skachko, S., van Weele, M. and Walker, K. A. (2016) Harmonisation and diagnostics of MIPAS ESA CH4 and N2O profiles using data assimilation. Atmospheric Measurement Techniques, 9 (12). pp. 5895-5909. ISSN 1867-8548 doi: 10.5194/amt-9-5895-2016

Checa-Garcia, R., Shine, K. P. and Hegglin, M. I. (2016) The contribution of greenhouse gases to the recent slowdown in global-mean temperature trends. Environmental Research Letters, 11 (9). 094018. ISSN 1748-9326 doi: 10.1088/1748-9326/11/9/094018

Miyazaki, K., Iwasaki, T. , Kawatani, Y. , Kobayashi, C. , Sugawara, S. and Hegglin, M. I. (2016) Inter-comparison of stratospheric mean-meridional circulation and eddy mixing among six reanalysis data sets. Atmospheric Chemistry and Physics, 16 (10). pp. 6131-6152. ISSN 1680-7316 doi: 10.5194/acp-16-6131-2016

Tegtmeier, S., Hegglin, M. I., Anderson, J., Funke, B., Gille, J., Jones, A., Smith, L., von Clarmann, T. and Walker, K. A. (2016) The SPARC Data Initiative: comparisons of CFC-11, CFC-12, HF and SF6 climatologies from international satellite limb sounders. Earth System Science Data, 8 (1). pp. 61-78. ISSN 1866-3516 doi: 10.5194/essd-8-61-2016

2015

Schwartz, M. J., Manney, G. L. , Hegglin, M. I. , Livesey, N. J., Santee, M. L. and Daffer, W. H. (2015) Climatology and variability of trace gases in extratropical double-tropopause regions from MLS, HIRDLS, and ACE-FTS measurements. Journal of Geophysical Research, 120 (2). pp. 843-867. ISSN 0148-0227 doi: 10.1002/2014JD021964

2014

Neu, J. L., Hegglin, M. I., Tegtmeier, S., Bourassa, A., Degenstein, D., Froidevaux, L., Fuller , R., Funke, B., Gille, J., Jones, A., Rozanov, A., Toohey, M., von Clarmann, T., Walker, K. A. and Worden, J. R. (2014) The SPARC Data Initiative: Comparison of upper troposphere/lower stratosphere ozone climatologies from limb-viewing instruments and the nadir-viewing Tropospheric Emission Spectrometer. Journal of Geophysical Research - Atmospheres, 119 (11). pp. 6971-6990. ISSN 0148-0227 doi: 10.1002/2013JD020822

Shepherd, T. G., Plummer, D. A., Scinocca, J. F., Hegglin, M. I. , Fioletov, V. E., Reader, M. C., Remsberg, E., von Clarmann, T. and Wang, H. J. (2014) Reconciliation of halogen-induced ozone loss with the total-column ozone record. Nature Geoscience, 7 (6). pp. 443-449. ISSN 1752-0908 doi: 10.1038/NGEO2155

Manney, G. L., Hegglin, M. I., Daffer, W. H., Schwartz, M. H., Santee, M. L. and Pawson, S. (2014) Climatology of Upper Tropospheric–Lower Stratospheric (UTLS) Jets and Tropopauses in MERRA. Journal of Climate, 27 (9). pp. 3248-3271. ISSN 1520-0442 doi: 10.1175/JCLI-D-13-00243.1

Hegglin, M.I., Plummer, D.A., Shepherd, T.G., Scinocca, J.F., Anderson, J., Froidevaux, L., Funke, B., Hurst, D., Rozanov, A., Urban, J., von Clarmann, T., Walker, K.A., Wang, H.J., Tegtmeier, S. and Weigel, K. (2014) Vertical structure of stratospheric water vapour trends derived from merged satellite data. Nature Geoscience, 7 (10). pp. 768-776. ISSN 1752-0894 doi: 10.1038/ngeo2236

2013

Toohey, M., Hegglin, M. I., Tegtmeier, S., Anderson, J., Anel, J. A., Bourassa, A., Brohede, S., Degenstein, D., Froidevaux, L., Fuller, R., Funke, B., Gille, J., Jones, A., Kasai, Y., Krueger, K., Kyrölä, E., Neu, J. L., Rozanov, A., Smith, L., Urban, J., von Clarmann, T., Walker, K. A. and Wang, R. H. J. (2013) Characterizing sampling bias in the trace gas climatologies of the SPARC Data Initiative. Journal of Geophysical Research - Atmospheres, 118 (20). 11,847-11,862. ISSN 2169-8996 doi: 10.1002/jgrd.50874

Tegtmeier, S., Hegglin, M. I., Anderson, J., Bourassa, A., Brohede, S., Degenstein, D., Froidevaux, L., Fuller, R., Funke, B., Gille, J., Jones, A., Kasai, Y., Krueger, K., Kyrölä, E., Lingenfelser, G., Lumpe, J., Nardi, B., Neu, J., Pendlebury, D., Remsberg, E., Rozanov, A., Smith, L., Toohey, M., Urban, J., von Clarmann, T., Walker, K. A. and Wang, R. H. J. (2013) SPARC Data Initiative: A comparison of ozone climatologies from international satellite limb sounders. Journal of Geophysical Research: Atmospheres, 118 (21). 12,229-12,247. ISSN 2169-8996 doi: 10.1002/2013JD019877

Hegglin, M. I., Tegtmeier, S., Anderson, J., Froidevaux, L., Fuller, R., Funke , B., Jones, A., Lingenfelser, G., Lumpe, J., Pendlebury, D., Remsberg, E., Rozanov, A., Toohey, M., Urban, J., von Clarmann, T., Walker, K. A. , Wang , R. and Weigel, K. (2013) SPARC Data Initiative: Comparison of water vapor climatologies from international satellite limb sounders. Journal of Geophysical Research. Atmospheres, 118 (20). pp. 11824-11846. ISSN 2169-8996 doi: 10.1002/jgrd.50752

2012

Fujiwara, M. , Suzuki, J. , Gettelman, A. , Hegglin, M. I., Akiyoshi, H. and Shibata, K. (2012) Wave activity in the tropical tropopause layer in seven reanalysis and four chemistry climate model data sets. Journal of Geophysical Research: Atmospheres, 117 (D12). D12105. ISSN 2169-8996 doi: 10.1029/2011JD016808

2011

Manney, G. L. , Hegglin, M. I., Daffer, W. H. , Santee, M. L. , Ray, E. A. , Pawson, S. , Schwartz, M. J. , Boone, C. D. , Froidevaux, L. , Livesey, N. J. , Read, W. G. and Walker, K. A. (2011) Jet characterization in the upper troposphere/lower stratosphere (UTLS): applications to climatology and transport studies. Atmospheric Chemistry and Physics, 11. pp. 6115-6137. ISSN 1680-7324 doi: 10.5194/acp-11-6115-2011

Gettelman, A., Hoor, P., Pan, L. L., Randel, W. J., Hegglin, M. I. and Birner, T. (2011) The extratropical upper troposphere and lower stratosphere. Reviews of Geophysics, 49 (3). RG3003. ISSN 8755-1209 doi: 10.1029/2011RG000355

2010

Ray, E. A. , Moore, F. L. , Rosenlof, K. H. , Davis, S. M. , Boenisch, H. , Morgenstern, O. , Smale, D. , Rozanov, E. , Hegglin, M., Pitari, G. , Mancini, E. , Braesicke, P. , Butchart, N. , Hardiman, S. , Li, F. , Shibata, K. and Plummer, D. A. (2010) Evidence for changes in stratospheric transport and mixing over the past three decades based on multiple data sets and tropical leaky pipe analysis. Journal of Geophysical Research: Atmospheres, 115 (16). D21304. ISSN 2169-8996 doi: 10.1029/2010JD014206

Gettelman, A., Hegglin, M. I., Son, S.-W., Kim, J., Fujiwara, M., Birner, T., Kremser, S., Rex, M., Añel, J. A., Akiyoshi, H., Austin, J., Bekki, S., Braesike, P., Brühl, C., Butchart, N., Chipperfield, M., Dameris, M., Dhomse, S., Garny, H., Hardiman, S. C., Jöckel, P., Kinnison, D. E., Lamarque, J. F., Mancini, E., Marchand, M., Michou, M., Morgenstern, O., Pawson, S., Pitari, G., Plummer, D., Pyle, J. A., Rozanov, E., Scinocca, J., Shepherd, T. G., Shibata, K., Smale, D., Teyssèdre, H. and Tian, W. (2010) Multimodel assessment of the upper troposphere and lower stratosphere: tropics and global trends. Journal of Geophysical Research, 115. D00M08. ISSN 0148-0227 doi: 10.1029/2009JD013638

Hegglin, M.I., Gettelman, A., Hoor, P., Krichevsky, R., Manney, G. L., Pan, L. L., Son, S.-W., Stiller, G., Tilmes, S., Walker, K. A., Eyring, V., Shepherd, T. G., Waugh, D., Akiyoshi, H., Añel, J. A., Austin, J., Baumgaertner, A., Bekki, S., Braesicke, P., Brühl, C., Butchart, N., Chipperfield, M., Dameris, M., Dhomse, S., Frith, S., Garny, H., Hardiman, S. C., Jöckel, P., Kinnison, D. E., Lamarque, J. F., Mancini, E., Michou, M., Morgenstern, O., Nakamura, T., Olivié, D., Pawson, S., Pitari, G., Plummer, D. A., Pyle, J. A., Rozanov, E., Scinocca, J. F., Shibata, K., Smale, D., Teyssèdre, H., Tian, W. and Yamashita, Y. (2010) Multimodel assessment of the upper troposphere and lower stratosphere: Extratropics. Journal of Geophysical Research - Atmospheres, 115 (D3). D00M09. ISSN 0148-0227 doi: 10.1029/2010JD013884

Morgenstern, O., Giorgetta, M. A., Shibata, K., Eyring, V., Waugh, D. W., Shepherd, T. G., Akiyoshi, H., Austin, J., Baumgaertner, A. J. G., Bekki, S., Braesicke, P., Brühl, C., Chipperfield, M. P., Cugnet, D., Dameris, M., Dhomse, S., Frith, S. M., Garny, H., Gettelman, A., Hardiman, S. C., Hegglin, M. I., Jöckel, P., Kinnison, D. E., Lamarque, J. -F., Mancini, E., Manzini, E., Marchand, M., Michou, M., Nakamura, T., Nielsen, J. E., Olivié, D., Pitari, G., Plummer, D. A., Rozanov, E., Scinocca, J. F., Smale, D., Teyssèdre, H., Toohey, M., Tian, W. and Yamashita, Y. (2010) Review of the formulation of present‐generation stratospheric chemistry‐climate models and associated external forcings. Journal of Geophysical Research, 115. D00M02. ISSN 0148-0227 doi: 10.1029/2009JD013728

Hoor, P. , Wernli, H. , Hegglin, M. I. and Bönisch, H. (2010) Transport timescales and tracer properties in the extratropical UTLS. Atmospheric Chemistry and Physics, 10 (16). pp. 7929-7944. ISSN 7929-7944 doi: 10.5194/acp-10-7929-2010

2009

Hegglin, M. I. and Shepherd, T. G. (2009) Large climate-induced changes in ultraviolet index and stratosphere-to-troposphere ozone flux. Nature Geoscience, 2 (10). pp. 687-691. ISSN 1752-0894 doi: 10.1038/NGEO604

Manney, G. L., Harwood, R. S., MacKenzie, I. A. , Minschwaner, K., Allen, D. R., Santee, M. L., Walker, K. A. , Hegglin, M. I., Lambert, A. , Pumphrey, H. C. , Bernath, P. F. , Boone, C. D. , Schwartz, M. J., Livesey, N. J., Daffer, W. H. and Fuller, R. A. (2009) Satellite observations and modeling of transport in the upper troposphere through the lower mesosphere during the 2006 major stratospheric sudden warming. Atmospheric Chemistry and Physics, 9. ISSN 1680-7316 doi: 10.5194/acp-9-4775-2009

Hegglin, M. I., Boone, C.D., Manney, G.L. and Walker, K.A. (2009) A global view of the extratropical tropopause transition layer from Atmospheric Chemistry Experiment Fourier Transform Spectrometer O3, H2O, and CO. Journal of Geophysical Research - Atmospheres, 114. D00B11. ISSN 0148-0227 doi: 10.1029/2008JD009984

2008

Hegglin, M. I., Boone, C.D., Manney, G.L., Shepherd, T. G., Walker, K.A., Bernath, P.F., Daffer, W.H., Hoor, P. and Schiller, C. (2008) Validation of ACE-FTS satellite data in the upper troposphere/lower stratosphere (UTLS) using non-coincident measurements. Atmospheric Chemistry and Physics, 8 (6). pp. 1483-1499. ISSN 1680-7324 doi: 10.5194/acp-8-1483-2008

2007

Hegglin, M. I. and Shepherd, T. G. (2007) O_3-N_2O correlations from the Atmospheric Chemistry Experiment: revisiting a diagnostic of transport and chemistry in the stratosphere. Journal of Geophysical Research, 112. D19301. ISSN 0148-0227 doi: 10.1029/2006JD008281

2006

Engel, A., Bönisch, H., Brunner, D. , Fischer, H., Franke, H., Günther, G., Gurk, C., Hegglin, M., Hoor, P. , Königstedt, R. , Krebsbach, M. , Maser, R. , Parchatka, U., Peter, T., Schell, D., Schiller, C. , Schmidt, U., Spelten, N., Szabo, T., Weers, U., Wernli, H., Wetter, T. and Wirth, V. (2006) Highly resolved observations of trace gases in the lowermost stratosphere and upper troposphere from the SPURT project: an overview. Atmospheric Chemistry and Physics, 6 (2). pp. 283-301. ISSN 1680-7324 doi: 10.5194/acp-6-283-2006

Pätz, H.-W., Volz-Thomas, A. , Hegglin, M. I., Brunner, D., Fischer, H. and Schmidt, U. (2006) In-situ comparison of the NOy instruments flown in MOZAIC and SPURT. Atmospheric Chemistry and Physics, 6. pp. 2401-2410. ISSN 1680-7316 doi: 10.5194/acp-6-2401-2006

Hegglin, M. I. , Brunner, D., Peter, T., Hoor, P., Fischer, H., Staehelin, J., Krebsbach, M. , Schiller, C., Parchatka, U. and Weers, U. (2006) Measurements of NO, NOy, N2O, and O3 during SPURT: implications for transport and chemistry in the lowermost stratosphere. Atmospheric Chemistry and Physics, 6. pp. 1331-1350. ISSN 1680-7324 doi: 10.5194/acp-6-1331-2006

Fischer, H., Lawrence, M., Gurk, C., Hoor, P., Lelieveld, J., Hegglin, M. I., Brunner, D. and Schiller, C. (2006) Model simulations and aircraft measurements of vertical, seasonal and latitudinal O3 and CO distributions over Europe. Atmospheric Chemistry and Physics, 6. pp. 339-348. ISSN 1680-7324 doi: 10.5194/acp-6-339-2006

Krebsbach, M., Schiller, C., Brunner, D., Günther, G., Hegglin, M. I., Mottaghy, D. , Riese, M. , Spelten, N. and Wernli, H. (2006) Seasonal cycles and variability of O3 and H2O in the UT/LMS during SPURT. Atmospheric Chemistry and Physics, 6. pp. 109-125. ISSN 1680-7324 doi: 10.5194/acp-6-109-2006

2005

Hegglin, M. I., Brunner, D., Peter, T., Staehelin, J., Wirth, V., Hoor, P. and Fischer, H. (2005) Determination of eddy-diffusivity in the lowermost stratosphere. Geophysical Research Letters, 32 (13). L13812. ISSN 0094-8276 doi: 10.1029/2005GL022495

2004

Hoor, P., Gurk , C., Brunner, D., Hegglin, M. I., Wernli, H. and Fischer, H. (2004) Seasonality and extent of extratropical TST derived from in-situ CO measurements during SPURT. Atmospheric Chemistry and Physics, 4 (5). pp. 1427-1442. ISSN 1680-7324 doi: 10.5194/acp-4-1427-2004

Hegglin, M., Brunner, D., Wernli, H., Schwierz, C., Martius, O., Hoor, P., Fischer, H., Parchatka, U., Spelten, N., Schiller, C., Krebsbach, M., Weers, U., Staehelin, J. and Peter, T. (2004) Tracing troposphere-to-stratosphere transport above a mid-latitude deep convective system. Atmospheric Chemistry and Physics, 4 (3). pp. 741-756. ISSN 1680-7316 doi: 10.5194/acp-4-741-2004 (Trace gas transport in the tropopause region (SPURT))

2002

Hegglin, M. I., Krieger , U. K., Koop, T., and Peter, T. (2002) Technical note: Organics-induced fluorescence in Raman studies of sulfuric acid aerosols. Aerosol Science and Technology, 36 (4). pp. 510-512. ISSN 0278-6826 doi: 10.1080/027868202753571331

This list was generated on Wed Nov 22 23:01:28 2017 GMT.

m.i.hegglin@reading.ac.uk

Office: 302A (Lyle)

Extension: 6693

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