A Monthly Near-Real-Time Night Marine Air Temperature Dataset

A monthly near-real time (NRT) night marine air temperature (NMAT) dataset is being developed from 2010 to present. The International Comprehensive Ocean-Atmosphere Data Set (ICOADS) Release 3.0 is used to extract the night marine air temperature. Associated with each extracted air temperature observation; time of observation (year, month, day and hour), latitude, longitude, sea surface temperature (SST), wind speed, height of the anemometer, air temperature observation height (height of the thermometer), ship ID, platform type, and the night/day flag. NMAT and corresponding wind speed observations are not taken at the same height, but at different heights depending on location of the thermometer, anemometer, and ship height. Boundary layer similarity theory is used to estimate the drag, heat and moisture coefficients to correct the NMAT to a reference height of 10m. The NMAT’s are interpolated and gridded onto a common field. Results and analysis of the NRT NMAT will be presented along with future research.