EasyFlux DL.Eddy-Covariance Datalogger Program
完全纠正的势态
数据记录器程序，可计算完全纠正的CO2, latent heat, and sensible heat
weather applications water applications energy applications gas flux and turbulence applications 基础设施应用程序 土壤应用

Overview

EasyFlux®DL is a free CRBasic program that enables a data logger to report fully corrected fluxes of CO2，潜热（h2O), sensible heat, and momentum from a Campbell Scientific open-path and closed-path eddy-covariance (EC) system. Final fluxes are processed from raw high frequency time series data by applying commonly used corrections found in scientific literature.

In the past, Campbell Scientific's data logger EC programs roughly estimated fluxes, and PC post-processing software was used to fully correct the flux measurements. Now with the EasyFlux®DL program, fully corrected fluxes are processed by the data logger and reported at the end of each EC averaging interval.

EasyFlux®DL has been tested at several stations in various environments, including irrigated alfalfa, grassland, maize, open water, forest, and desert. The results have shown good agreement with fluxes processed using traditional PC-based software applications.

To download EasyFlux®DL, refer to the Downloads section.

阅读更多

Benefits and Features

  • Accesses final fluxes quickly without the burden of post-processing
  • 生成小于时间序列表的磁通输出表，这允许使用蜂窝，无线电或其他下带宽遥测选项经常收集磁通数据
  • Available at no charge; see Downloads section on web page
  • 匹配PC后处理软件包提供的磁通（假设原始数据的相同过滤和相同的校正程序选择）
  • Saves high frequency time series to removable media in case reprocessing is later needed
  • 包括数据质量和足迹特征
  • Reports uncorrected and intermediate values in an auxiliary output table for more detailed data inspection
  • Provides for CR6 program fully processed data output in AmeriFlux format

图片

Detailed Description

Provides fully corrected outputs of CO2flux, latent heat flux, and sensible heat flux at a user-defined interval (e.g., 30 minutes). Also provides many other variables of atmospheric properties, instrument diagnostics, intermediate corrections, and other energy balance or biomet sensors. Comparisons of flux outputs have shown good agreement with other common post-processing software packages when applying the same set of corrections.

主要校正和处理程序：

  • Despike and filter high frequency time series data using sonic anemometer and gas analyzer diagnostic codes, signal strengths, and measurement output range thresholds.
  • Apply coordinate rotations with an option to use the double rotation method (Tanner and Thurtell, 1969) or planar fit method (Wilczak et al., 2001).
  • Lag CO2and H2o对Sonic风测量的测量，用于CO的最大化2and H2O fluxes (Horst and Lenschow, 2009; Foken et al., 2012), with additional constraints to ensure lags are physically possible.
  • 应用频率修正使用常用的有限公司spectra (Moore, 1986; van Dijk, 2002; Moncrieff et al., 1997) and transfer functions for block averaging (Kaimal et al., 1989), line/volume averaging (Moore, 1986; Moncrieff et al., 1997; Foken et al., 2012; van Dijk, 2002), low-pass filter (Ibrom et al. 2007;仅限CPEC), time constants (Montgomery, 1947; Shapland et al., 2014; Geankoplis, 1993, Burgon et al. 2016), and sensor separation (Horst and Lenschow, 2009; Foken et al., 2012).
  • Apply a modified SND correction (Schotanus et al., 1983) to derive sensible heat flux from sonic sensible heat flux following the implementation as outlined in van Dijk (2002). Additionally, fully corrected sensible heat flux computed from a fine-wire thermocouple is provided if our FW05, FW1, or FW3 is used.
  • Apply correction for air density fluctuations using Webb et al., 1980.
  • 基于稳态条件和Foken等，2002年符合Ameriflux格式的稳态条件和表面层湍流特性分配数据质量分类（QC）。此外，还遵循Foken等人，（2012）也遵循风向。提供了一组额外的QC。
  • Calculate footprint characteristics using Kljun et al., 2004 or Kormann and Meixner, 2001.
  • 如果使用能量平衡传感器，基于能量平衡测量和校正明智和潜热通量的能量闭合。
  • Sonic shadow correction is optional.
  • CO.2光谱校正使用高频性质的空气温度为默认和惯例作为选项。CO.2values corrected using different air temperature are all stored at the measured frequency.

兼容性

Required Equipment

  • IRGASON Integrated CO2and H2O Open-Path Gas Analyzer and 3-D Sonic AnemometerOREC150 CO.2and H2O Open-Path Gas Analyzer with CSAT3A 3-D Sonic AnemometerOREC155 CO2and H2O Closed-Path Gas Analyzer with CSAT3A 3-D Sonic Anemometer
  • CR6 datalogger (with CDM-A116 for channel expansion to accommodate energy balance sensors) or CR3000
  • NL115, NL116, or CFM100 (CR3000 only)
  • CFMC2G or 27158 (2 GB) or 33288 (8 GB) microSD Flash SLC Memory Card (CR6 only) or CFMC16G CompactFlash card (CR3000 only)

Supported Optional Sensors*

  • CR6带有能量平衡传感器的CDM-A116
  • FW05, FW1, or FW3 Fine-Wire Thermocouple
  • HC2S3 or HMP155A Temperature and Relative Humidity Probe
  • CNR4, NR01, or NR-LITE2 Net Radiometer
  • CS300 or LI200RX Pyranometer
  • LI190R Quantum Sensor
  • SI-111 Infrared Radiometer
  • TE525MM Tipping Bucket Rain Gage
  • TCAV Averaging Soil Thermocouple Probe (quantity up to two)
  • CS616或CS650含水量反射仪（最多两种）
  • HFP01 or HFP01SC Soil Heat Flux Plate (quantity up to four)
  • GPS to synchronize time for a station in a network

*It may be possible to add non-standard sensors to the program upon request and for a fee.

下载s

EasyFlux DL.for CR6OP v.2.00 (78.9 KB)04-10-2020

CR6 datalogger program for Campbell open-path eddy-covariance systems.

View Update History

EasyFlux DL.for CR3000 v.1.2 (50.1 KB)04-04-2018

CR3000 datalogger program for Campbell open-path eddy-covariance systems.

CR6CP v.1.04的EasyFlux DL（121 KB）11-22-2021

CR6 datalogger program for Campbell closed-path eddy-covariance systems.

View Update History

EasyFlux DL.for CR1000XOP v.2.00 (79.0 KB)04-10-2020

CAMBELL Open-Path eDy-Covariance Systems的CR1000X数据记录程序程序。

经常问的问题

与之相关的常见问题解答数量EasyFlux DL.：8.

Expand AllCollapse All

  1. EasyFlux®DL在各种土地类型的车站工作？

    EasyFlux®DL已经在各种景观中进行了测试，包括森林，开阔的水，短篇小说和沙漠。假设仪器被正确维护，已经发现它在所有景观中都很好。

  2. Can EasyFlux®DL be used with other biomet or energy balance sensors?

    In most cases it is possible to adapt the EasyFlux®用于其他生物座或能量平衡传感器的DL程序。联系Campbell Scientific讨论定制和索取报价的可能性。

  3. Can EasyFlux®除了Irgason和EC150之外，DL与天然气分析仪一起使用？

    EasyFlux®DL以其本地形式仅支持Campbell Scientific Open-Path气体分析仪（即Irgason或EC150）。在某些情况下，可以调整EasyFlux®DL program for a particular gas analyzer. Contact Campbell Scientific to discuss the possibility of customization and to request a quote.

  4. What sample rates does EasyFlux®DL operate at?

    EasyFlux®DL在10 Hz上对涡旋协方差传感器进行采样。可以使用EasyFlux测量20 Hz®DL C6OP在CR6 Datalogger上运行。

  5. Are data outputs from EasyFlux®DL准备发布？

    用户有责任确保数据质量和出版物的适应性。当仪器被正确维护并且条件非常适合开放式EC测量时，最有可能的通量结果符合最终和可用形式，但用户仍应验证校正是否适合该站点以及数据适合进一步使用。原始时间序列数据始终存储在CompactFlash卡上，因此用户可以使用后处理软件包进行重新处理原始数据。

  6. What needs to be done to set up EasyFlux®DL？

    设置EasyFlux®DL，请按照下列步骤操作：

    1. 打开EasyFlux.®DL在文本编辑器中，例如CRBasic编辑器。
    2. Set the instrument constants (for example, which sensors are being measured).
    3. Load EasyFlux®DL与使用Loggernet软件的任何其他数据记录器程序一样。
    4. 安装并有线安装并有线后，使用CR3000键盘或CR1000KD（CR6）设置或微调站变量（例如，测量高度，冠层高度）。使用说明书为此过程提供了逐步说明。
  7. Can EasyFlux®DL be used with a sonic anemometer besides the IRGASON or CSAT3A?

    EasyFlux®DL在本土仅支持IRGASON或形式CSAT3A sonic anemometers. It is possible to adapt the EasyFlux®DL程序支持其他Campbell Scientific Sonic测量仪（例如，CSAT3或CSAT3B）。该程序不能适应于其他非坎贝克声波测量仪。

  8. Can EasyFlux®除了CR3000之前，DL在数据记录器上运行吗？

    EasyFlux®DL现在可用于CR3000和CR6 DataLoggers。

该产品已更换

Privacy Policy Update

我们更新了我们的隐私政策。学到更多

Baidu