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CPL-derived Atmospheric Boundary Layer Top Height

Submitted by ORNL DAAC Staff on 2022-01-09
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Top: Annotated time-height cross-section of aerosol backscatter profiles measured using CPL onboard C-130 aircraft on 2016-07-26. Wavelet-derived ABL top (black solid-circles) height overlaid. Middle: Secondary aerosol layers overlaid on the top panel. Bottom: Final attributed ABL top heights. 

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ABL top heights and the altitudes of the two additional aerosol layers derived from CPL measurements using the Haar wavelet transform method.

ATom: Actinic Flux & Chemical Species Photolysis Frequencies

Submitted by ORNL DAAC Staff on 2022-01-09
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CAFS derived total NO2 photolysis frequencies (jNO2) during ATom 1. The flight track (black line) is shown during nighttime operations when jNO2 is below detection limits.

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Actinic flux and photolysis frequencies for photodissociation reactions for a variety of chemical species during the four ATom campaigns.
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Nature Scientific Data Publication Highlights Daymet V4 Model Improvements

Submitted by ORNL DAAC Staff on 2022-01-05
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Annual timeseries of daily cross-validation mean absolute error (MAE), averaged over all station days for each year, comparing results for Daymet V4 and Daymet V3. (a) MAE for estimation of daily maximum temperature. (b) MAE for estimation of daily total precipitation. Image from Thornton et al. 2021.

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A recent publication by Thornton et. al., 2021, Gridded daily weather data for North America with comprehensive uncertainty quantification, details improvements to the Daymet V4 Model.

Delta-X: ADCP Channel Surveys, Coastal Louisiana, 2021

Submitted by ORNL DAAC Staff on 2021-12-28
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Locations of river discharge measurements (black triangles) in the Atchafalaya and Terrebonne Basins within the Mississippi River Delta (MRD) floodplain in coastal Louisiana, U.S. Measurements were taken by Delta-X project in March and April 2021.

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River discharge measurements collected at selected locations within the Mississippi River Delta floodplain.