Publications of Wouter Knap

2018
T. Mathijssen, J. Bijma, and W. H. Knap. 2018. Tracebilitypdf of CM11 pyranometer calibrations at KNMI. KNMI Technical Report TR367, 29pp.

Wang, P., R. van Westrhenen. J. F. Meirink, S. van der Veen, and W. H. Knap. 2018. Surface solar radiation forecasts by advecting cloud physical properties derived from Meteosat Second Generation. Submitted to Solar Energy.

linkDriemel, A., J. Augustine, K. Behrens, S. Colle, C. Cox, E. Cuevas-Agulló, F. M. Denn, T. Duprat, M. Fukuda, H. Grobe, M. Haeffelin, N. Hyett, O. Ijima, A. Kallis, W. H. Knap, V. Kustov, C. N. Long, D. Longenecker, A. Lupi, M. Maturilli, M. Mimouni, L. Ntsangwane, H. Ogihara, X. Olano, M. Olefs, M. Omori, L. Passamani, E. Bueno Pereira, H. Schmithüsen, S. Schumacher, R. Sieger, J. Tamlyn, R. Vogt, L. Vuilleumier, X. Xia, A. Ohmura, and G. König-Langlo (2018), Baseline Surface Radiation Network (BSRN): structure and data description (1992-2017), Earth Syst. Sci. Data, 10, 1491-1501, https://doi.org/10.5194/essd-10-1491-2018, 2018.

Driemel, A., J. Augustine, K. Behrens, S. Colle, C. Cox, E. Cuevas-Agulló,link F. M. Denn, T. Duprat, M. Fukuda, H. Grobe, M. Haeffelin, N. Hyett, O. Ijima, A. Kallis, W. H. Knap, V. Kustov, C. N. Long, D. Longenecker, A. Lupi, M. Maturilli, M. Mimouni, L. Ntsangwane, H. Ogihara, X. Olano, M. Olefs, M. Omori, L. Passamani, E. Bueno Pereira, H. Schmithüsen, S. Schumacher, R. Sieger, J. Tamlyn, R. Vogt, L. Vuilleumier, X. Xia, A. Ohmura, and G. König-Langlo (2018), Baseline surface radiation data (1992-2017). PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.880000.

linkKnap, W. H. (2018), Basic measurements of radiation at station Cabauw (2018-MM). Koninklijk Nederlands Meteorologisch Instituut, De Bilt. doi:10.1594/PANGAEA.x.

2017
linkKnap, W. H. (2017), Basic measurements of radiation at station Cabauw (2017-MM). Koninklijk Nederlands Meteorologisch Instituut, De Bilt. doi:10.1594/PANGAEA.x.

2016
linkKnap, W. H. (2016), Basic measurements of radiation at station Cabauw (2016-MM). Koninklijk Nederlands Meteorologisch Instituut, De Bilt. doi:10.1594/PANGAEA.x.

2015
Knap, W. H. and C. van Oort. 2015. Tien jaar Baseline Surface Radiationpdf Network (BSRN) in Cabauw. Meteorologica, 2, 20-23.

pdfWang, P., Allaart, M., Knap, W. H., and Stammes, P.: Analysis of actinic flux profiles measured from an ozonesonde balloon, Atmos. Chem. Phys., 15, 4131-4144, doi:10.5194/acp-15-4131-2015, 2015.

2014
linkKnap, W. H. (2014), Basic measurements of radiation at station Cabauw (2014-MM). Koninklijk Nederlands Meteorologisch Instituut, De Bilt. doi:10.1594/PANGAEA.x.

2013
linkKnap, W. H. (2013), Basic measurements of radiation at station Cabauw (2013-MM). Koninklijk Nederlands Meteorologisch Instituut, De Bilt. doi:10.1594/PANGAEA.x.

2012
linkKnap, W. H. (2012), Basic measurements of radiation at station Cabauw (2012-MM). Koninklijk Nederlands Meteorologisch Instituut, De Bilt. doi:10.1594/PANGAEA.x.

2011
pdfWang, P., W. H Knap and P. Stammes. 2011. Cloudy-sky shortwave radiative closure for a Baseline Surface Radiation Network site. J. Geophys. Res, 116, D08202, doi:10.1029/2010JD015141.

2010
pdfBrandau, C.L., H. W. J. Russchenberg, W. H. Knap. 2010. Evaluation of ground-based remotely sensed liquid water cloud properties using shortwave radiation measurements, Atmos. Res., doi:10.1016/j.atmosres.2010.01.009.

2009
pdfDeneke H. M., W. H. Knap, C. Simmer (2009), Multiresolution analysis of the temporal variance and correlation of transmittance and reflectance of an atmospheric column, J. Geophys. Res., 114, D17206, doi:10.1029/2008JD011680.

pdfWang, P., W. H. Knap, P. Kuipers Munneke, and P. Stammes. 2009. Clear-sky shortwave radiative closure for the Cabauw Baseline Surface Radiation Network site, Netherlands, J. Geophys. Res., 114, D14206, doi:10.1029/2009JD011978.

2008
pdfWang, P., W. H. Knap, P. Kuipers Munneke, P. Stammes. 2008. Clear-sky Atmospheric Radiative Transfer: A Model Intercomparison for Shortwave Irradiances. Proceedings of the International Radiation Symposium (IRS-2008).

pdfBrandau, C., H. W. J. Russchenberg, W. H. Knap. 2008. Evaluation of ground-based remotely sensed water cloud properties using radiation and aircraft in-situ measurements. Proceedings of the International Conference on Clouds and Precipitation (ICCP-2008).

pdfKuipers Munneke, P., C. H. Reijmer, M. R. van den Broeke, G. König-Langlo, P. Stammes, and W. H. Knap. 2008. Analysis of clear-sky Antarctic snow albedo using observations and radiative transfer modeling, J. Geophys. Res., 113, D17118, doi:10.1029/2007JD009653.

pdfBoesche, E., P. Stammes, R. Preusker, R. Bennartz, W. H. Knap, J. Fischer. 2008. Polarization of skylight in the O2A-band: effects of aerosol properties. Applied Optics, 47(19), 3467-3480.

pdfBrinksma, E., G. Pinardi, R. Braak, H. Volten, A. Richter, A. Schonhardt, M. Van Roozendael, C. Fayt, C. Hermans, R. Dirksen, T. Vlemmix, A.J.C Berkhout, D.P.J. Swart, H. Oetjen, F. Wittrock, T. Wagner, O. W. Ibrahim, G. de Leeuw, M. Moerman, L. Curier, E. A. Celarier, W. H. Knap, J. P. Veefkind, H.J. Eskes, M. Allaart,
R. Rothe, A. J. M. Piters, P. Levelt . 2008. The 2005 and 2006 DANDELIONS NO2 and
Aerosol Intercomparison Campaigns. Journal of Geophysical Research, doi:10.1029/2007JD008808.

2007
pdfKnap, W. H., J. Bijma, Y. B. L. Hinssen, A. Los, C. van Oort, J. Warmer, E. Worrell. 2007. The Baseline Surface Radiation Network (BSRN) station at the Cabauw Observatory.  KNMI Biennial Scientific Report 2005-2006, 18-23.

pdfZadelhoff, G. J. van, E. van Meijgaard, D. P. Donovan, W. H. Knap, R. Boers. 2007. Sensitivity of the shortwave radiative budget to the parameterization of ice crystal effective radius. Journal of Geophysical Research, doi:10.1029/2006JD007791.

pdfHinssen, Y. B. L., W. H. Knap. 2007. Comparison of pyranometric and pyrheliometric methods for the determination of sunshine duration. Journal of Atmospheric and Oceanic Technology , 24(5), 835-846.

2005
pdfKnap, W. H., L. C.-Labonnote, G. Brogniez, P. Stammes. 2005. Modeling total and polarized reflectances of ice clouds: evaluation by means of POLDER and ATSR-2 measurements. Applied Optics, 44(19), 4060-4073.

pdfKnap, W. H.,  P. Stammes, G. de Leeuw. 2005. Sunphotometry in the Netherlands and Suriname.  WMO/GAW experts workshop on a global surface-based network for long term observations of column aerosol optical propteries, Davos, Switzerland, 8-10 March 2004.  WMO TD No. 1287, 72-74.

2004
pdfAccareta, J. R., P. Stammes, W. H. Knap. 2004. First retrieval of cloud phase from SCIAMACHY spectra around 1.6 micron. Atmospheric Research, 72, 89-105.

pdfHenzing, J. S., W. H. Knap, P. Stammes, H. M. ten Brink, G. P. A. Kos, D. P. J. Swart, A. Apituley, J. B. Bergwerff. 2004. The effect of aerosols on the downward shortwave irradiances at the surface – measurements versus calculations with MODTRAN4.1. Journal of Geophysical Research, doi:10.1029/2003JD004142.

2003
pdfKnap, W. H., A. Los, E. Worrell, P. Stammes. 2003. Sunphotometry at the High Altitude Research Station Jungfraujoch. Activity Report 2003 of the International Foundation HFSJG.

2002
pdfKnap, W. H., P. Stammes, R. B. A. Koelemeijer. 2002. Cloud thermodynamic phase determination from near-infrared spectra of reflected sunlight. Journal of the Atmospheric Sciences, 59(1), 83-96.

2001
Henzing, J. S., W. H. Knap. 2001. Uncertainty in pyranometer and pyrheliometer
measurements at KNMI in De Bilt. KNMI Technical Report TR-235.

Henzing, J. S., W. H. Knap, P. Stammes, H. M. ten Brink, G. P. A. Kos, D. P. J. Swart, A. Apituley, J. B. Bergwerff, 2001. The effect of aerosol on closure of the regional short-wave radiation balance. NOP report no.: 410 200 087.

Knap, W. H., P. Stammes, and R.B.A. Koelemeijer. 2001. Cloud-phase determination using near-infrared AVIRIS measurements. In: IRS 2000: Current Problems in Atmospheric Radiation, W. L. Smith and Yu. M. Timofeyev (Eds.). A. Deepak Publishing, Hampton, Virginia. pp. 941-944.

2000
Stammes, P., W. H. Knap, R. B. A. Koelemeijer, N. A. J. Schutgens. 2000. Radiation and cloud studies with GOME in preparation for future spectrometer missions. Proceedings of the ERS-Envisat Symposium 2000, European Space Agency.

Knap, W. H., P. Stammes, R. B. A. Koelemeijer. 2000. Discriminating between water and ice clouds using near-infrared AVIRIS measurements. Proceedings of the 9th AVIRIS Earth Science and Applications Workshop, NASA Jet Propulsion Laboratory, Pasadena, USA, 23-25 February 2000.

Greuell, W., W. H. Knap. 2000. Remote sensing of the albedo and detection of the slush line on the Greenland ice sheet. Journal of Geophysical Research, 105(D12), 15,567-15,576.

1999
pdfKnap, W. H., M. Hess, P. Stammes, R. B. A. Koelemeijer, P. D. Watts. 1999. Cirrus optical thickness and crystal size retrieval from ATSR-2 data using phase functions of imperfect hexagonal ice crystals. Journal of Geophysical Research, 104(D24), 31,721-31,730.

Knap, W. H., P. Stammes, R. B. A. Koelemeijer. 1999. The effect of crystal shape on the retrieval of cirrus crystal size and optical thickness from ATSR-2 data. Proceedings of AMS 10th conference on atmospheric radiation, Madison, Wisconsin, USA, 28 June – 2 July 1999, 165-168.

pdfKnap, W. H., B. W. Brock, J. Oerlemans, I. C. Willis. 1999. Comparison of Landsat-TM derived and ground-based albedo of Haut Glacier d’Arolla. International Journal of Remote Sensing., 20(17), 3293-3310.

pdfKnap, W. H., C. H. Reijmer, J. Oerlemans. 1999. Narrowband to broadband conversion of Landsat-TM glacier albedos. International Journal of Remote Sensing, 20(10), 2091-2110.

pdfReijmer, C. H., W. H. Knap, J. Oerlemans. 1999. The surface albedo of the Vatnajökull ice cap, Iceland: A comparison between satellite-derived and ground-based measurements. Boundary Layer Meteorology, 92(1), 125-144.

1998
Knap, W. H., M. Hess, P. Stammes, R. B. A. Koelemeijer, P. D. Watts. 1998. Interpretation of ATSR-2 measurements of cirrus clouds using phase functions of imperfect hexagonal ice crystals. Proc. SPIE Int. Soc. Opt. Eng.,  3495, 51-60.

pdfKnap, W. H., C. H. Reijmer. 1998. Anisotropy of the reflected radiation field over melting glacier ice: measurements in Landsat-TM bands 2 and 4. Remote Sensing of Environment, 65, 93-104.

pdfOerlemans, J., W. H. Knap. 1998. A one-year record of global radiation and albedo in the ablation zone of the Morteratschgletscher, Switzerland. Journal of Glaciology. 44(147), 231-238.

pdfOerlemans, J., B. Anderson, A. Hubbard, Ph. Huybrechts, T. Jóhanneson, W. H. Knap , M. Schmeits, A. P. Stroeven, R. S. W. van de Wal, J. Wallinga, Z. Zuo. 1998. Modelling the response of glaciers to climate warming. Climate Dynamics, 14, 267-274.

1997
Knap, W. H. 1997. Satellite-derived and ground-based measurements of the surface albedo of glaciers. PhD-thesis Utrecht University, The Netherlands. 175 pp. ISBN90-393-1983-9.

Bintanja, R., S. Johnsson, W. H. Knap. 1997. The annual cycle of the surface energy balance of Antarctic blue ice. Journal of Geophysical Research, 102(D2), 1867-1881.

Greuell, W., W. H. Knap, P. C. Smeets. 1997. Elevational changes in meteorological variables along a mid-latitude glacier during summer. Journal of Geophysical Research, 102(D22), 25941-25954.

1996
pdfKnap, W. H., J. Oerlemans, M. Cadée. 1996. Climate sensitivity of the ice cap of King George Island, South Shetland Islands, Antarctica. Annals of Glaciology, 23, 154-159.

pdfKnap, W. H., J. Oerlemans. 1996. The surface albedo of the Greenland ice sheet: satellite-derived and in situ measurements in the Søndre Strømfjord area during the 1991 melt season. Journal of Glaciology, 42(141), 364-374.

Wal, R. S. W. van de, R. Bintanja, W. Boot, M. R. van den Broeke, L. A. Conrads, P. G. Duynkerke, P. Fortuin, E. A. C. Henneken, W. H. Knap, M. Portanger, H. F. Vugts, J. Oerlemans. 1996. Mass balance measurements in the Søndre Strømfjord area in the period 1990-1994. Zeitschrift für Gletscherkunde und Glazialgeologie, 31, 75-63.

Prior to 1996
Knap, W. H. 1992. A study on the albedo and energy balance of an alpine snow field in the winter season. IMAU Report V92-12, Institute for Marine and Atmospheric Research, Utrecht, Netherlands, 68 pp.