RAL Infrared Microwave Sounder (IMS) temperature, water vapour, ozone and surface spectral emissivity

The Rutherford Appleton Laboratory (RAL) Infrared Microwave Sounder (IMS) data set contains vertical profiles of temperature, water vapour, and ozone as well as surface spectral emissivity spanning infrared and microwave, surface temperature, cloud fraction and height. Data are retrieved from co-located measurements by the Infrared Atmospheric Sounding Interferometer (IASI), the Microwave Humidity Sounder (MHS) and the Advanced Microwave Sounding Unit (AMSU) on board the Eumetsat Metop satellites.

Development of the IMS scheme and data production were funded by the UK’s National Centre for Earth Observation (NCEO) under the Natural Environment Research Council (NERC), with additional funding from EUMETSAT contract EUM/CO/13/4600001252/THH.

Data were produced by the Remote Sensing Group (RSG) at the Rutherford Appleton Laboratory (RAL).

This first public release consists of a full processing of the Metop A mission from 2007 to the end of 2016, using version 2.1 of the algorithm.

IMS data are produced with the horizontal sampling of IASI, ~25 x 25 km

鲁瑟福阿普尔顿实验室（Rutherford Appleton Laboratory，简称RAL）的远红外微波声学仪（Infrared Microwave Sounder，简称IMS）数据集，涵盖了温度、水汽、臭氧的垂直廓线，以及红外和微波波段的地表光谱发射率、地表温度、云量和高度等信息。数据通过搭载于欧洲气象卫星组织（Eumetsat）Metop卫星上的红外大气探测干涉仪（Infrared Atmospheric Sounding Interferometer，简称IASI）、微波湿度探测器（Microwave Humidity Sounder，简称MHS）和高级微波探测单元（Advanced Microwave Sounding Unit，简称AMSU）的共定位测量获得。

IMS方案的开发和数据生产得到了英国国家地球观测中心（National Centre for Earth Observation，简称NCEO）在自然环境研究委员会（Natural Environment Research Council，简称NERC）的资助下进行，并额外获得了来自欧洲气象卫星组织合同EUM/CO/13/4600001252/THH的资金支持。

数据由鲁瑟福阿普尔顿实验室（Rutherford Appleton Laboratory，简称RAL）的遥感小组（Remote Sensing Group，简称RSG）生产。

本首次公开发布的数据集包含了从2007年到2016年底的Metop A任务的全过程处理，采用了算法的2.1版本。

IMS数据采用与IASI相同的水平采样，约为25 x 25公里。