Citation:

amt-10-709-2017

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Abstract:

The 19-channel rotating shadowband radiometer GUVis-3511 built by Biospherical Instruments provides automated shipborne measurements of the direct, diffuse and global spectral irradiance components without a requirement for platform stabilization. Several direct sun products, including spectral direct beam transmittance, aerosol optical depth, Ångström exponent and precipitable water, can be derived from these observations. The individual steps of the data analysis are described, and the different sources of uncertainty are discussed. The total uncertainty of the observed direct beam transmittances is estimated to be about 4 % for most channels within a 95 % confidence interval for shipborne operation. The calibration is identified as the dominating contribution to the total uncertainty. A comparison of direct beam transmittance with those obtained from a Cimel sunphotometer at a land site and a manually operated Microtops II sunphotometer on a ship is presented. Measurements deviate by less than 3 and 4 % on land and on ship, respectively, for most channels and in agreement with our previous uncertainty estimate. These numbers demonstrate that the instrument is well suited for shipborne operation, and the applied methods for motion correction work accurately. Based on spectral direct beam transmittance, aerosol optical depth can be retrieved with an uncertainty of 0.02 for all channels within a 95 % confidence interval. The different methods to account for Rayleigh scattering and gas absorption in our scheme and in the Aerosol Robotic Network processing for Cimel sunphotometers lead to minor deviations. Relying on the cross calibration of the 940 nm water vapor channel with the Cimel sunphotometer, the column amount of precipitable water can be estimated with an uncertainty of ± 0.034 cm.

Coverage:

Median Latitude: 12.039509 * Median Longitude: -8.492541 * South-bound Latitude: -33.910200 * West-bound Longitude: -20.948200 * North-bound Latitude: 52.881800 * East-bound Longitude: 18.435500

Date/Time Start: 2014-03-08T08:44:21 * Date/Time End: 2014-04-12T06:10:11

Minimum ALTITUDE: 20 m * Maximum ALTITUDE: 20 m

Event(s):

PS83-track * Latitude Start: -33.911860 * Longitude Start: 18.434600 * Latitude End: 53.563960 * Longitude End: 8.548130 * Date/Time Start: 2014-03-08T00:00:00 * Date/Time End: 2014-04-13T00:00:00 * Location: Atlantic, transit cruise * Campaign: (ANT-XXIX/10) * Basis: * Method/Device: Underway cruise track measurements (CT)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DATE/TIME	Date/Time		Deneke, Hartwig		Geocode
2	LATITUDE	Latitude		Deneke, Hartwig		Geocode
3	LONGITUDE	Longitude		Deneke, Hartwig		Geocode
4	ALTITUDE	Altitude	m	Deneke, Hartwig		Geocode
5	Spectral irradiance, downward at 305 nm	Ed_305	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
6	Spectral irradiance, downward at 340 nm	Ed_340	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
7	Spectral irradiance, downward at 380 nm	Ed_380	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
8	Spectral irradiance, downward at 412 nm	Ed_412	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
9	Spectral irradiance, downward at 443 nm	Ed_443	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
10	Spectral irradiance, downward at 510 nm	Ed_510	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
11	Spectral irradiance, downward at 610 nm	Ed_610	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
12	Spectral irradiance, downward at 625 nm	Ed_625	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
13	Spectral irradiance, downward at 665 nm	Ed_665	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
14	Spectral irradiance, downward at 694 nm	Ed_694	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
15	Spectral irradiance, downward at 750 nm	Ed_750	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
16	Spectral irradiance, downward at 765 nm	Ed_765	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
17	Spectral irradiance, downward at 875 nm	Ed_875	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
18	Spectral irradiance, downward at 940 nm	Ed_940	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
19	Spectral irradiance, downward at 1020 nm	Ed_1020	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
20	Spectral irradiance, downward at 1245 nm	Ed_1245	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
21	Spectral irradiance, downward at 1550 nm	Ed_1550	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
22	Spectral irradiance, downward at 1640 nm	Ed_1640	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
23	Short-wave downward (GLOBAL) radiation	SWD	W/m²	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
24	Spectral irradiance, incident at 305 nm	Ei_305	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
25	Spectral irradiance, incident at 340 nm	Ei_340	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
26	Spectral irradiance, incident at 380 nm	Ei_380	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
27	Spectral irradiance, incident at 412 nm	Ei_412	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
28	Spectral irradiance, incident at 443 nm	Ei_443	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
29	Spectral irradiance, incident at 510 nm	Ei_510	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
30	Spectral irradiance, incident at 610 nm	Ei_610	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
31	Spectral irradiance, incident at 625 nm	Ei_625	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
32	Spectral irradiance, incident at 665 nm	Ei_665	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
33	Spectral irradiance, incident at 694 nm	Ei_694	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
34	Spectral irradiance, incident at 750 nm	Ei_750	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
35	Spectral irradiance, incident at 765 nm	Ei_765	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
36	Spectral irradiance, incident at 875 nm	Ei_875	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
37	Spectral irradiance, incident at 940 nm	Ei_940	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
38	Spectral irradiance, incident at 1020 nm	Ei_1020	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
39	Spectral irradiance, incident at 1245 nm	Ei_1245	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
40	Spectral irradiance, incident at 1550 nm	Ei_1550	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
41	Spectral irradiance, incident at 1640 nm	Ei_1640	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
42	Direct radiation	DIR	W/m²	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
43	Spectral irradiance, downward - incident at 305 nm	Ed-Ei_305	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
44	Spectral irradiance, downward - incident at 340 nm	Ed-Ei_340	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
45	Spectral irradiance, downward - incident at 380 nm	Ed-Ei_380	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
46	Spectral irradiance, downward - incident at 412 nm	Ed-Ei_412	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
47	Spectral irradiance, downward - incident at 443 nm	Ed-Ei_443	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
48	Spectral irradiance, downward - incident at 510 nm	Ed-Ei_510	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
49	Spectral irradiance, downward - incident at 610 nm	Ed-Ei_610	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
50	Spectral irradiance, downward - incident at 625 nm	Ed-Ei_625	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
51	Spectral irradiance, downward - incident at 665 nm	Ed-Ei_665	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
52	Spectral irradiance, downward - incident at 694 nm	Ed-Ei_694	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
53	Spectral irradiance, downward - incident at 750 nm	Ed-Ei_750	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
54	Spectral irradiance, downward - incident at 765 nm	Ed-Ei_765	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
55	Spectral irradiance, downward - incident at 875 nm	Ed-Ei_875	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
56	Spectral irradiance, downward - incident at 940 nm	Ed-Ei_940	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
57	Spectral irradiance, downward - incident at 1020 nm	Ed-Ei_1020	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
58	Spectral irradiance, downward - incident at 1245 nm	Ed-Ei_1245	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
59	Spectral irradiance, downward - incident at 1550 nm	Ed-Ei_1550	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
60	Spectral irradiance, downward - incident at 1640 nm	Ed-Ei_1640	W/m²/nm	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
61	Diffuse radiation	DIF	W/m²	Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
62	Aerosol optical thickness at 340 nm	AOT_340		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
63	Aerosol optical thickness at 380 nm	AOT_380		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
64	Aerosol optical thickness at 412 nm	AOT_412		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
65	Aerosol optical thickness at 443 nm	AOT_443		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
66	Aerosol optical thickness at 510 nm	AOT_510		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
67	Aerosol optical thickness at 610 nm	AOT_610		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
68	Aerosol optical thickness at 625 nm	AOT_625		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
69	Aerosol optical thickness at 665 nm	AOT_665		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
70	Aerosol optical thickness at 694 nm	AOT_694		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
71	Aerosol optical thickness at 750 nm	AOT_750		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
72	Aerosol optical thickness at 765 nm	AOT_765		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
73	Aerosol optical thickness at 875 nm	AOT_875		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
74	Aerosol optical thickness at 940 nm	AOT_940		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
75	Aerosol optical thickness at 1020 nm	AOT_1020		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
76	Aerosol optical thickness at 1245 nm	AOT_1245		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
77	Aerosol optical thickness at 1550 nm	AOT_1550		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.
78	Aerosol optical thickness at 1640 nm	AOT_1640		Deneke, Hartwig	Ground-Based UV-Visble radiometer with BioSHADE accessory, GUVis-3511, BSI Inc.

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Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

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444304 data points

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