Cloud optical depth measurements with sunphotometer in Camag?ey, Cuba

摘要

One. year. of. Cloud. Optical. Depth. (COD). measurements. obtained. with. the. radiometer. (sun‐ photometer.Cimel.CE.–.318),.in.Camagüey,.Cuba,.from.June.2010.to.May.2011,.are.presented..As.the. first. step. an. evaluation. method. is. proposed,. in. order. to. confirm.that.a.cloud.was.measured..This. method.is.based.on.the.complementary.cloud.information.derived.from.the.actinometrical. observations.. In. the. second. step. of.the.work,. the. statistical. results. from. the.first. year. of.the. COD. measurements.in.Camagüey.were.analyzed...The.results.show.the.high.quality.of.COD.measurements. at.Camagüey..The.analysis.of.the.COD.frequency.showed.two.peaks.at.the.intervals.centered. in.2.5. and.17.5..Similar.behavior.occurred.each.month..The.COD.mean.value.for.the.entire.period.was.24.8,. with.a.standard.deviation.of.31.7..The.mean.monthly.minimum.and.maximum.value.of.COD.occurred. in. December,. 2010. and. May,.2011,. respectively.. The. diurnal.cycle.of.the.mean.hourly.COD.values. showed.an.increase.in.the.afternoon.hours..At.the.same.time,.the. number. of. measured. cases. decreased.. There. was. correspondence. between. the. COD. data. obtained. with. sun‐photometer. and. CALIOP.lidar,.for.the.COD.values.below.5..The.results.showed.in.this.paper.constitute.the.first.report. of.such.measurements.in.Cuba..