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Joly, A., K. A. Browning, P. Bessemoulin, J.-P. Cammas, G. Caniaux, J.-P. Chalon, S. A. Clough, R. Dirks, K. A. Emanuel, L. Eymard, F. Lalaurette, R. Gall, T. D. Hewson, P. H. Hildebrand, D. Jorgensen, R. H. Langland, Y. Lemaitre, P. Mascart, J. A. Moore, P. O. G. Persson, F. Roux, M. A. Shapiro, C. Snyder, Z. Toth, R. M. Wakimoto, 1999: Overview of the field phase of the Fronts and Atlantic Storm-Track Experiment (FASTEX) project. QJRMS, 125, in print.

Joly, A., D. Jorgensen, M.A. Shapiro, A. Thorpe, P. Bessemoulin, K.A. Browning, J.-P. Cammas, J.-P. Chalon, S.A. Clough, K.A. Emanuel, L. Eymard, R. Gall, P.H. Hildebrand, R.H. Langland, Y. Lemaitre, P. Lynch, J.A. Moore, P.O.G. Persson, C. Snyder, and R.M. Wakimoto, 1997: The Fronts and Atlantic Storm-Track Experiment (FASTEX): Scientific Objectives and Experimental Design. Bull. Amer. Meteor. Soc., 78, 1917-1940.

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Langland, R. H., Z. Toth, R. Gelaro, I. Szunyogh, M. A. Shapiro, S. Majumdar, R. Morss, G. D. Rohaly, C. Velden, N. Bond, and C. Bishop, 1999: The North-Pacific Experiment (NORPEX-98) Targeted observations for improved North merican Weather Forecasts. Bull. Amer. Meteorol. Soc., 80, 1363-1384.

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Lorenz, E. N., and K. A. Emanuel, 1998: Optimal sites for supplementary weather observations: simulations with a small model. J. Atmos. Sci., 55, 633-653.

Morss, R. E., K. A. Emanuel, and C. Snyder, 2000: Idealized adaptive observation strategies for improving numerical weather prediction. JAS, in press.

Pu, Z-X., E. Kalnay, J. Sela, I. Szunyogh, 1997: Sensitvity of forecast error toinitial conditions with a quasi-inverse linear method. Mon. Wea. Rev., 125, 2479-2503.

Rabier, F., H. Jarvinen, E. Klinker, J.-F. Mahfouf and A. Simmons, 2000: The ECMWF operational implementation of four-dimensional variational assimilation. Part I: experimental results with simplified physics. Quart. J. Roy. Met. Soc., 126, 1143--1170.

Ralph, F. M., O. Persson, D. Reynolds, P. Neiman, W. Nuss, J. Schmidt, D. Jorgensen, C. King, A, White, J. Bao, W. Neff, D. Kinsmill, D. Miller, Z. Toth, and J. Wilczak, 1998: The use of tropospheric profiling in CALJET. 4th Symp. Tropospheric Profiling: Needs and Technol. 20-25 Sept., Snowmass, CO, p. 258-260.

Snyder, C., 1996: Summary of an Informal Workshop on Adaptive Observations and FASTEX. Bull. Amer. Meteorol. Soc., 77, 953--961.

Szunyogh, I., Z. Toth, K. A. Emanuel, C. H. Bishop, C. Snyder, R. E. Morss, J. Woolen, and T. Marchok, 1999a: Ensemble-based targeting experiments during FASTEX: the effect of dropsonde data from the Lear jet. Quart. J. Roy. Meteor. Soc., 125, 3189-3218.

Szunyogh, I., Z. Toth, S. Majumdar, R. Morss, C. Bishop, and S. Lord, 1999b: Ensemble-based targeted observations during NORPEX. Preprints of the 3rd Symposium on Integrated Observing Systems,10-15 January 1999, Dallas, Texas, 74-77.

Szunyogh, I., Z. Toth, S. Majumdar, R. Morss, B. Etherton, and C. Bishop, 2000: The effect of targeted dropsonde observations during the 1999 Winter Storm Reconnaissance program. Mon. Wea. Rev., 128, 3520-3537.

Szunyogh, I. , Z. Toth, and S. Majumdar, 2001: On the propagation of the effect of targeted observations: The 2000 Winter Storm Reconnaissance Program. Tellus, to be submitted.

Toth, Z., and E. Kalnay, 1997: Ensemble forecasting at NCEP and the breeding method. Mon. Wea. Rev, 125, 3297-3319.

Toth, Z., I. Szunyogh, K. Emanuel, C Snyder, J. Woolen, W.-S. Wu, T. Marchok, R. Morss, and C. Bishop, 1998: Ensemble-based targeted observations during FASTEX. Preprints of the 12th Conference on Numerical Weather Prediction, 11-16 January 1998, Phoenix, Arizona, p. 24-27.

Toth, Z., I. Szunyogh, S. Majumdar, R. Morss, B. Etherton, C. Bishop, and S. Lord, 1999: The 1999 Winter Storm Reconnaissance Program. Preprints for the 13th AMS Conference on Numerical Weather Prediction, 13-17 September 1999, Denver, CO, 27-32.

Toth, Z., I. Szunyogh, S. Majumdar, R. Morss, B. Etherton, C. Bishop, and S. Lord, 2000: Targeted observations at NCEP: Toward an operational impolementation. Preprints for the Fourth Symposium on Integrated Observing Systems, January, 10-14, 2000, Long Beach, CA, Dallas, TX, AMS, 186-193.