Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Ehrlich, André; Bierwirth, Eike; Istomina, Larysa; Wendisch, Manfred (2017): Cloud optical thickness, cloud particle effective radius, and effective snow grain size retrieved from airborne spectral reflectivity measurements on 2012-05-17 (VERDI 2012) over the Beaufort Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.882977, In supplement to: Ehrlich, A et al. (2017): Combined retrieval of Arctic liquid water cloud and surface snow properties using airborne spectral solar remote sensing. Atmospheric Measurement Techniques, 10(9), 3215-3230, https://doi.org/10.5194/amt-10-3215-2017

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Project(s):
Coverage:
Median Latitude: 69.682591 * Median Longitude: -137.905929 * South-bound Latitude: 69.408390 * West-bound Longitude: -138.562530 * North-bound Latitude: 69.853130 * East-bound Longitude: -136.805650
Date/Time Start: 2012-05-17T16:45:00 * Date/Time End: 2012-05-17T17:12:00
Event(s):
VERDI_1205170117 * Latitude Start: 68.305620 * Longitude Start: -133.500220 * Latitude End: 68.305620 * Longitude End: -133.500160 * Date/Time Start: 2012-05-17T15:45:00 * Date/Time End: 2012-05-17T20:14:00 * Campaign: VERDI_2012 * Basis: POLAR 5 * Method/Device: Aircraft (AC)
Comment:
SMART uses two separte spectrometer to cover the solar spectral range. To overcome differences in the timing of both components, a running mean (5 sec) was applied to the reflectivity time series in the retrieval algorithm. Therefore, cloud optical thickness, cloud particle size and snow grain size are smoothed as well while the reflectivity time series are provided as raw data without running mean.
MODIS cloud products were selected and averaged for an area of 5x5 pixel with the aircraft observations centered in this area.
tau_MODIS: MODIS cloud product Collection 6: Cloud Optical Thickness (dimensionless) two-channel retrieval using band 7(2.1 µm) and band 6(1.6 µm) from best points: not failed in any way, not marked for clear sky restoral
tau_MODIS_16: MODIS cloud product Collection 6: Cloud Optical Thickness (dimensionless) two-channel retrieval using band 7(2.1 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked for clear sky restoral
tau_MODIS_21: MODIS cloud product Collection 6: Cloud Optical Thickness (dimensionless) two-channel retrieval using band 6(1.6 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked for clear sky restoral
tau_MODIS_37: MODIS cloud product Collection 6: Cloud Optical Thickness (dimensionless) two-channel retrieval using band 20(3.7 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked for clear sky restoral
R_eff_MODIS: MODIS cloud product Collection 6: Cloud Particle Effective Radius ( µm) two-channel retrieval using band 7(2.1 µm) and band 6(1.6 µm) from best points: not failed in any way, not marked for clear sky restoral
R_eff_MODIS_16: MODIS cloud product Collection 6: Cloud Particle Effective Radius ( µm) two-channel retrieval using band 7(2.1 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked for clear sky restoral
R_eff_MODIS_21: MODIS cloud product Collection 6: Cloud Particle Effective Radius ( µm) two-channel retrieval using band 6(1.6 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked for clear sky restoral
R_eff_MODIS_37: MODIS cloud product Collection 6: Cloud Particle Effective Radius ( µm) two-channel retrieval using band 20(3.7 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked for clear sky restoral
---
** Use of these data requires prior OK from the PIs. The VERDI Data Protocol applies **
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Time in secondsTimesEhrlich, Andréseconds of day from 00:00UTC
2DATE/TIMEDate/TimeEhrlich, AndréGeocode
3LATITUDELatitudeEhrlich, AndréGeocode
4LONGITUDELongitudeEhrlich, AndréGeocode
5Height above sea levelHeightm a.s.l.Ehrlich, André
6Solar zenith angleSZAdegEhrlich, André
7ReflectanceReflEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)spectral nadir reflectivity at 645 nm
8ReflectanceReflEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)spectral nadir reflectivity at 860 nm
9ReflectanceReflEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)spectral nadir reflectivity at 1040 nm
10ReflectanceReflEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)spectral nadir reflectivity at 1655 nm
11ReflectanceReflEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)spectral nadir reflectivity at 2100 nm
12FlagFlagEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)1=snow surface, 0=open ocean
13Cloud optical thicknesstauEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)median
14Cloud particle radiusCloud R effµmEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)median effective
15Snow grain sizeSnow grain sizemmEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)median effective
16ErrorErrorEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)Cloud optical thickness
17ErrorErrorEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)Cloud particle radius
18ErrorErrorEhrlich, AndréSpectral modular airborne radiation measurement system (SMART)Snow grain size
19Cloud optical thicknesstauEhrlich, AndréModerate-resolution imaging spectroradiometer (MODIS)tau_MODIS
20Cloud optical thicknesstauEhrlich, AndréModerate-resolution imaging spectroradiometer (MODIS)tau_MODIS 21
21Cloud optical thicknesstauEhrlich, AndréModerate-resolution imaging spectroradiometer (MODIS)tau_MODIS 37
22Cloud particle radiusCloud R effµmEhrlich, AndréModerate-resolution imaging spectroradiometer (MODIS)R_eff MODIS
23Cloud particle radiusCloud R effµmEhrlich, AndréModerate-resolution imaging spectroradiometer (MODIS)R_eff MODIS 21
24Cloud particle radiusCloud R effµmEhrlich, AndréModerate-resolution imaging spectroradiometer (MODIS)R_eff MODIS 37
Size:
37829 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)