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--- instruments:mfrsr:mfrsr [2015/07/13 15:14] – kerstin
+++ instruments:mfrsr:mfrsr [2021/01/22 22:17] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Multi-Filter Rotating Shadowband Radiometer ======
-//Mentor: [[http://www.geomet.uni-koeln.de/en/general/the-institute/staff/detailed-view/1533c00ee5ed245e71ff90464a63e700/?tx_wtdirectory_pi1[show]=33&tx_rggooglemap_pi1[poi]=33|K. Ebell]]//
+//Mentor: [[http://www.geomet.uni-koeln.de/das-institut/mitarbeiter/ebell/|K. Ebell]]//
 ===== Principle =====
-The Multifilter Rotating Shadowband Radiometer (MFRSR) is a passive instrument that measures global and diffuse components of solar irradiance at one broadband channel and at six narrowband channels, i. e. at 415, 500, 615, 673, 870, and 940 nm. Direct irradiance is subsequently calculated from the diffuse and global measured components. Each MFRSR measurement sequence includes measurements at four different shadowband positions: 1) at nadir (home position), 2) at the first side-band position, 3) sun-blocked, 4) at the second side-band position. The side-band measurements are used to correct for the portion of the sky obscured by the shadowband. From the MFRSR measurements, one may infer the atmosphere's aerosol optical depth at each wavelength. In turn, these optical depths may be used to derive information about the column abundances of ozone and water vapor (Michalsky et al. 1995), as well as aerosol (Harrison and Michalsky 1994) and other atmospheric constituents.
+The Multifilter Rotating Shadowband Radiometer (MFRSR) is a passive instrument that measures global and diffuse components of solar irradiance at one broadband channel and at six narrowband channels, i. e. at 415, 500, 615, 673, 870, and 940 nm. Direct irradiance is subsequently calculated from the diffuse and global measured components. Each MFRSR measurement sequence includes measurements at four different shadowband positions: 1) at nadir (home position), 2) at the first side-band position, 3) sun-blocked, 4) at the second side-band position. The side-band measurements are used to correct for the portion of the sky obscured by the shadowband. From the MFRSR measurements, the aerosol optical depth at the wavelengths 415, 500, 615, 673 and 870 nm as well as the Angstrom exponent can be derived. For single-layer "horizontally homogeneous" liquid clouds, layer cloud optical depth and effective radius can also be retrieved.
 ===== Instrument =====
+{{:instruments:mfrsr:mfrsr.jpg?300|}}
 [[http://www.yesinc.com/|YES Inc.]] [[http://www.yesinc.com/products/data/mfr7/index.html|MFR-7]]
@@ Line 14: / Line 15: @@
   * If you are interested in receiving data please contact the instrument mentors: // [[http://www.geomet.uni-koeln.de/en/general/the-institute/staff/detailed-view/1533c00ee5ed245e71ff90464a63e700/?tx_wtdirectory_pi1[show]=33&tx_rggooglemap_pi1[poi]=33|K. Ebell]]//
-  * [[http://gop.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser2.html?site=JOYCE&date=-1&UpperLeft=MFRSR_Broadband&UpperRight=MFRSR_Narrowband | Quicklook archive]]
+  * [[http://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser2.html?site=JOYCE&date=-1&UpperLeft=MFRSR_Broadband&UpperRight=MFRSR_Narrowband | Quicklook archive]]
+Current measurements:
+<html>
+      <a href="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/jue/mfrsr/l1/latest_mfrsr_jue_l1_broadband.png" target="_blank">
+      <img src="http://atmos.meteo.uni-koeln.de/~hatpro/quicklooks/obs/site/jue/mfrsr/l1/latest_mfrsr_jue_l1_broadband.png" width=300>
+      </a> click to enlarge
+</html>
+The figure shows the total hemispheric (top), the diffuse hemispheric (middle) and the direct normal irradiance (bottom) from the broadband channel of the MFRSR.
 ===== History =====
@@ Line 30: / Line 40: @@
 | Weight | 4.55 kg |
 | Power Consumption | 110/220 VAC, 50/60 Hz (50 watts maximum) |
-| Manufacturer | [[http://www.yesinc.com/|YES Inc.]] |
+| Manufacturer | [[http://www.yesinc.com/|YES Inc.]]
+|