Data

The LTDP EMiR dataset

Version 1.1 of the LTDP EMiR dataset is publicly available under DOI 10.5676/DWD_EMIR/V002.

LTDP EMiR covers the global ice-free ocean for time period November 1992 to March 2012. It is available as Level-2 product for individual orbits at MWR’s native spatial resolution of typically 20 km, and as Level-3 product in a gridded version consisting of monthly mean values in spatial resolutions of 2° × 2° and 3° × 3°.

Unlike methods relying on infrared or visible/near-infrared techniques, microwave observations allow for accurate TCWV retrievals also under cloudy conditions.

Summary information on the LTDP EMiR data record can be found on its DOI landing page. A more detailed description of the EMiR data record can be found in the EMiR product description. An analysis of EMiR’s strengths and weaknesses is presented in the EMiR validation report.

EMIR_TCWV_ALLEMIR_VS_AIRWAVE_90_00
LTDP EMiR TCWV climatology, covering the period 11/1992 to 03/2012. Ocean areas shaded in dark grey are too close to the coast to allow for accurate TCWV retrieval.Comparison between AIRWAVE (A/ATSR-derived, dots) and LTDP EMiR (solid line) TCWV retrievals. The geographic area between 90°S and 90°N has been considered. The colours indicate the different MWR instruments (blue: ERS-1, green: ERS-2, red: Envisat).

[Last edited: 2019-03-01]