18 documents found in 177ms
# 1
Walk, Janek • Stauch, Georg • Reyers, Mark • Bartz, Melanie • Brückner, Helmut • (et. al.)
Abstract: This file contains the results of a spatio-temporal frequency analysis of extreme precipitation events for the coastal Atacama Desert (20°S-26°S, 69.5°W-71°W). Daily accumulated total precipitation data between 1982 and 2017 from a regional WRF model for the Atacama Desert is used as input data. Mean annual precipitation, the number of events exceeding specific threshold values in precipitation, coefficients of determination for the logarithmic regression analyses, expected precipitation for given recurrence intervals, and expected recurrence intervals for given precipitation events are given as output. The spatial resolution is 10 km and the output is stored in a .csv table.
# 2
Böhm, Christoph
Abstract: This data set contains cloud base heights derived from the Multi-angle Imaging SpectroRadiometer (MISR) which is placed on the Terra satellite. The cloud base heights are provided globally on a 0.25x0.25 degree longitude latitude grid for a three year period (2007-2009). Daily files comprise retrievals from the illuminated portion of about 14 Terra revolutions around the Earth. The newly developed MISR cloud base height (MIBase) algorithm (Boehm et al., in review 2018, DOI:10.5194/amt-2018-317) retrieves the cloud base height from the MISR Level 2TC Cloud Product (MIL2TCSP). The MIL2TCSP product provides the cloud top height and a stereo-derived cloud mask at 1.1 km horizontal resolution. The MIBase algorithm evaluates the ensemble of the cloud top height retrievals for each grid box in case some cloud gaps occur within the area and a sufficient amount of cloud top height retrievals marked high confidence cloud according to the stereo-derived cloud mask is provided. The 15th percentile of the cloud top height distribution within the respective grid box yields the cloud base height. The algorithm has been calibrated and validated against ground-based ceilometer measurements across the continental USA over the course of two years. An important strength of MIBase is the geometric approach which is applied to create the cloud top height product from MISR measurements. Neither a calibration nor auxiliary data are necessary to obtain the cloud top height product which is the starting point for the MIBase algorithm. In consequence, retrievals are possible over all kinds of terrain even above ice. A disadvantage is the threshold height which MISR requires to create the stereo-derived cloud mask. Therefore, depending on the terrain variability in the vicinity of the measurement, MIBase is not capable of deriving cloud base heights below at least 560 m (flat terrain). The algorithm requires a broken cloud scene. For complete overcast within the chosen MIBase cell, the cloud base height cannot be retrieved. Therefore, climatologies derived from this algorithm would be biased towards cloud types for which MISR is able to observe the surface through cloud gaps. The given cloud base height estimates represent the situation during morning hours since MISR is carried on board the Terra satellite in a Sun-synchronous orbit with an equatorial overpass time at around 10:30 local solar time. Data gaps (due to unavailable input data): 2008-10-01 - 2008-10-15 and 2008-12-20 - 2008-12-22
# 3
Reyers, Mark
Abstract: This file contains simulated daily accumulated total precipitation (convective + non-convective) from the Regional Climate Model WRF for the Atacama Desert. The horizontal resolution is 10km, output is stored for yearly time frames as NETCDF, given time is the end of the accumulation period in UTC. A double one-way nesting has been performed using ERA-Interim as boundary conditions.
# 4
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent weather station "34 - Cerro Campana" in the Atacama desert in Chile. The measurement site is located in the southern transect of the research regions at the Cerro Campana. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected by GSM-based phone calls on a weekly basis. In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
# 5
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent master weather station "33- Quebrada Grande" in the Atacama desert in Chile. Master stations are equipped with further soil and radiations sensors, as well as temperature, humidity and wind sensors in a height of 4 m. The measurement site is located in the southern transect of the research regions at the Quebrada Grande. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected every hour by a GOES satellite uplink provided by National Oceanic and Atmospheric Administration (U.S. Department of Commerce). In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
# 6
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent weather station "32 - Quebrada Matancilla" in the Atacama desert in Chile. The measurement site is located in the southern transect of the research regions at the Quebrada Matancilla. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected every hour by a GOES satellite uplink provided by National Oceanic and Atmospheric Administration (U.S. Department of Commerce). In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
# 7
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent weather station "31- Caleta Sur de Punta Grande" in the Atacama desert in Chile. The measurement site is located in the southern transect of the research regions at the Caleta Sur de Punta Grande. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected by GSM-based phone calls on a weekly basis. In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
# 8
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent weather station "25 - Quebrada de Soga" in the Atacama desert in Chile. The measurement site is located in the central transect of the research regions at the Quebrada de Soga. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected every hour by a GOES satellite uplink provided by National Oceanic and Atmospheric Administration (U.S. Department of Commerce). In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
# 9
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent weather station "24 - Quebrada de Aroma" in the Atacama desert in Chile. The measurement site is located in the nothern transect of the research regions at the Quebrada de Aroma. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected by a Wifi-based connection to the seismic station of the Geoforschungszentrum Potsdam, Germany. In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
# 10
Hoffmeister, Dirk
Abstract: This data link summarizes all meteorological and soil measurements of the permanent master weather station "23- Cerro Constancia" in the Atacama desert in Chile. Master stations are equipped with further soil and radiations sensors, as well as temperature, humidity and wind sensors in a height of 4 m. The measurement site is located in the nothern transect of the research regions at the Cerro Constancia. Recent data are available on the weather station website section (https://www.crc1211db.uni-koeln.de/wd/index.php). Additionaly, detailed information about the station configuration and mounted sensors is given at this website section. The data of this station is collected every hour by a GOES satellite uplink provided by National Oceanic and Atmospheric Administration (U.S. Department of Commerce) and this station also collects data of station 12 by radio-based communication. In addition, data stored in the station is acquired on a regular time basis, as documented in the section stated above. Please contact the contributor for all further details. Yearly datasets are additionally stored in this CRC1211-DB.
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