World Meteorological Organization | American Meteorological Society | Royal Netherlands Meteorological Institute | Royal Meteorological Society | Japan Meteorological Agency | Defense Meteorological Satellite Program | Finnish Meteorological Institute | Fiji Meteorological Service | Swedish Meteorological and Hydrological Institute | India Meteorological Department | Canadian Meteorological and Oceanographic Society | Atlantic Oceanographic and Meteorological Laboratory | Tonga Meteorological Service | National Meteorological Center of CMA | Meteorological Service of Canada | Meteorological instrumentation | Danish Meteorological Institute | Atlantic Oceanographic and Meteorological Laboratory (AOML) |
However, water vapor content is usually measured in terms of mixing ratio (mass fraction) in reanalyses or dew point (temperature to partial vapor pressure saturation, i.e. relative humidity to 100%) in operational forecasting.