Topic
Disdrometer
About: Disdrometer is a research topic. Over the lifetime, 930 publications have been published within this topic receiving 23092 citations.
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TL;DR: The Chilean Coastal Orographic Precipitation Experiment (CCOPE) was conducted during the austral winter of 2015 (May-August) in the Nahuelbuta Mountains of southern Chile (38°S) as mentioned in this paper.
Abstract: The Chilean Coastal Orographic Precipitation Experiment (CCOPE) was conducted during the austral winter of 2015 (May–August) in the Nahuelbuta Mountains (peak elevation 1.3 km MSL) of southern Chile (38°S). CCOPE used soundings, two profiling Micro Rain Radars, a Parsivel disdrometer, and a rain gauge network to characterize warm and ice-initiated rain regimes and explore their consequences for orographic precipitation. Thirty-three percent of foothill rainfall fell during warm rain periods, while 50% of rainfall fell during ice-initiated periods. Warm rain drop size distributions were characterized by many more and relatively smaller drops than ice-initiated drop size distributions. Both the portion and properties of warm and ice-initiated rainfall compare favorably with observations of coastal mountain rainfall at a similar latitude in California. Orographic enhancement is consistently strong for rain of both types, suggesting that seeding from ice aloft is not a requisite for large orographic e...
24 citations
TL;DR: In this article, the spatial and vertical structure of clouds and precipitation during the 2013 Great Colorado Flood were analyzed using radar and disdrometer data collected during episodes of intense rainfall.
Abstract: Radar and disdrometer observations collected during the 2013 Great Colorado Flood are used to diagnose the spatial and vertical structure of clouds and precipitation during episodes of intense rainfall. The analysis focuses on 30 h of intense rainfall in the vicinity of Boulder, Colorado, during 2200–0400 UTC 11–13 September. The strongest rainfall occurred along lower parts of the Colorado Front Range at >1.6 km MSL and on the northern side of the Palmer Divide. The vertical structure of clouds and horizontal distribution of rainfall are strongly linked to upslope flow and low-level forcing, which resulted in surface convergence. During times of weak forcing, shallow convection produced rain at and below the melting layer through collision–coalescence and, to a lesser extent, riming. A mesoscale circulation interacting with the local terrain produced convective rainfall with high cloud tops that favored ice crystal production. During moderate forcing with cloud tops slightly exceeding the 0°C lev...
24 citations
TL;DR: In this article, the variability of rainfall and drop size distributions as a function of large-scale atmospheric conditions and storm characteristics was investigated using measurements from the Atmospheric Radiation Measurement Program (ARM) facility at Darwin, Australia.
Abstract: The variability of rainfall and drop size distributions (DSDs) as a function of large-scale atmospheric conditions and storm characteristics is investigated using measurements from the Atmospheric Radiation Measurement Program (ARM) facility at Darwin, Australia. Observations are obtained from an impact disdrometer with a near continuous record of operation over five consecutive wet seasons (2006–11). Bulk rainfall characteristics are partitioned according to diurnal accumulation, convective and stratiform precipitation classifications, objective monsoonal regime, and MJO phase. Findings support previous Darwin studies suggesting a significant diurnal and DSD parameter signal associated with both convective–stratiform and wet season monsoonal regime classification. Negligible MJO phase influence is determined for cumulative disdrometric statistics over the Darwin location.
24 citations
09 Apr 2018
TL;DR: In this article, preliminary results on an electromagnetic wave propagation experiment at E and D band are presented, where received power data are processed to identify and isolate rain events and quantify the fade induced by precipitation, and ancillary data collected by a laser-based disdrometer collocated with the link transceivers.
Abstract: Preliminary results on an electromagnetic wave propagation experiment at E and D band are presented. The research activity is collaboration between Politecnico di Milano and the Huawei European Microwave Centre in Milan, which has recently installed short (325 m) terrestrial links operating at 73, 83, 148 and 156 GHz and connecting two buildings in the university main campus. Received power data are processed to identify and isolate rain events and quantify the fade induced by precipitation, A
r
. Moreover, A
r is estimated taking advantage of ancillary data collected by a laser-based disdrometer collocated with the link transceivers. Preliminary results definitely point out the higher prediction accuracy achieved by exploiting the information on the rain drop size provided by the disdrometer.
24 citations
TL;DR: In this paper, the JW impact type disdrometer was used to measure the rain drop size distribution (DSD) at four places in Southern India (Thiruvananthapuram, Kochi, Munnar and Sriharikota) and the data for each minute were corrected for dead time errors and rain rate was computed from the corrected data.
24 citations