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= 63-953 Climate and Satellite Data Analysis = = 63-953 Climate and Satellite Data Analysis =
'''Lars Kaleschke, Alexander Loew'''
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Place: Geom 1536c  Place: Geom 1536c
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The participants will learn to practically work with climate model, reanalysis, in-situ station and satellite data. Organized as a group project, the participants will further learn the principles of project management and shared software development. 		 The participants will learn to practically work with climate model, reanalysis, in-situ station and satellite data. Organized as a group project, the participants will further learn the principles of project management and shared software development.
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 * [[/PM|Project management and documentation]]   * [[Climate_and_Satellite_Data_Analysis_2014/PM|Project management and documentation]]
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 * [[DataIO|Access to data sets]]
 * [[/Plotting|Plotting]] [[attachment:Seawater plot.ipynb]]
 * [[GenMaps|Data Visualization: Generating maps]]
 * [[http://ipython.org/ipython-doc/dev/interactive/htmlnotebook.html|IPython Notebooks]] [[https://github.com/ipython/ipython/wiki/A-gallery-of-interesting-IPython-Notebooks|Gallery of interesting IPython Notebooks]]
 * [[attachment:Stochastic analysis of time series.ipynb]] [[attachment:Monte carlo.ipynb]] [[attachment:GISSTEMP netcdf.ipynb]] [[attachment:datetimeobjects.ipynb]] [[attachment:Station data seasonal cycle.ipynb]]

  * [[DataIO|Access to data sets]]
 * [[GenMaps|Data Visualization: Generating maps]]
 
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Afternoon: evaluation and preparation of final report   Afternoon: evaluation and preparation of final report
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Kevin Cowtan and Robert Way fill the gaps of the HadCRUT temperature data set by using satellite data. Compare their new reconstruction of surface temperature data to independent in-situ observations and reanalysis data.  Kevin Cowtan and Robert Way fill the gaps of the HadCRUT temperature data set by using satellite data. Compare their new reconstruction of surface temperature data to independent in-situ observations and reanalysis data.
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Cowtand and Way (2013) methods and data are freely available: Cowtan and Way (2013) methods and data are freely available:
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Surface temperatures are available from the International Arctic Buoy Programme (IABP) website:  Surface temperatures are available from the International Arctic Buoy Programme (IABP) website:
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 * Review methods of Cowtan and Way (2013)
 * Analyse their reconstructed dataset of surface air temperature (seasonal cycle, anomalies, trends etc.)
 * Look at correlations with climate indices, e.g. ENSO, NAO.
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 * Review methods of Cowtan and Way (2013)
 * Write code to read and plot the data
 * Calculate trends and variabilites
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 * Review methods of Rigor et al. (2000)
 * Analyse the surface air temperature measured by the drift buoys (seasonal cycle, anomalies, trends etc.)
 * Are there significant trends over different period of times?

 * [[http://iabp.apl.washington.edu/AirT/RigorEtal-SAT.pdf|Rigor, I., R. Colony, and S. Martin, 2000, Variations in Surface Air Temperature Observations in the Arctic, 1979 - 1997, J. Climate, Vol. 13, no 5, 896-914.]]
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 * Review methods of Rigor et al. (2000)
 * Write code to read and plot the gridded buoy data
 * Calculate trends and variabilites

Reference:
 * [[http://iabp.apl.washington.edu/AirT/RigorEtal-SAT.pdf|Rigor, I., R. Colony, and S. Martin, 2000, Variations in Surface Air Temperature Observations in the Arctic, 1979 - 1997, J. Climate, Vol. 13, no 5, 896-914.]]
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(advanced programming skills needed) Use the buoy measurements of surface air temperature as ground truth
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 * Write code to interpolate the different datasets in a common grid 
 * Compare CW2013, buoy and reanalysis data (variability and trends)		  * Write code to interpolate the different datasets in a common grid
 * Compare CW2013, buoy and reanalysis data
 * Was the data gap in the Arctic filled in reasonably?
 * Are there biases or jumps in the data?
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* [[http://www.hoaps.org | HOAPS climatology]] of ocean surface fluxes 		  * [[http://www.hoaps.org|HOAPS climatology]] of ocean surface fluxes
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 * Bouy data :-)   * Bouy data :-)
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 * Methods and data   * Methods and data
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= Examples from the past =

== How significant are observations of Arctic temperature trends? ==

 * https://wiki.zmaw.de/lehre/Climate_and_Satellite_Data_Analysis_2013/ProjectA

Contents

  1. 63-953 Climate and Satellite Data Analysis
    1. Course objectives
    2. Schedule
      1. Monday
      2. Tuesday
      3. Wednesday
      4. Thursday
      5. Friday
  2. Topics for group work
    1. Coverage bias in the HadCRUT4 temperature series and its impact on recent temperature trends
      1. Cowtan and Way (CW2013) reconstruction
      2. Variations in Surface Air Temperature Observations in the Arctic
      3. Data intercomparison
    2. HOAPS ocean flux sampling bias
  3. TODOs
    1. Data
    2. Final report
    3. References
  4. Examples from the past
    1. How significant are observations of Arctic temperature trends?

63-953 Climate and Satellite Data Analysis

Lars Kaleschke, Alexander Loew

MS Integrated Climate System Sciences

Date: 3.2.2014-7.2.2014

Place: Geom 1536c

Course objectives

The participants will learn to practically work with climate model, reanalysis, in-situ station and satellite data. Organized as a group project, the participants will further learn the principles of project management and shared software development.

Schedule

Monday

General Introduction

Group work: develop a project plan and write a short technical proposal for your project.

Final report due by 15. March 2014

Obtain data and do preliminary analysis (e.g. data coverage).

Tuesday

Morning: Group presentations of project plan and preliminary analysis.

Afternoon: implementation and project work

Wednesday

Morning: Group presentations of methods and code implementations

Afternoon: Project work

Thursday

Morning: Group presentations of preliminary results

Afternoon: Project work

Friday

Morning: final presenation of results and discussion

Afternoon: evaluation and preparation of final report

Topics for group work

media_summary.png

Kevin Cowtan and Robert Way fill the gaps of the HadCRUT temperature data set by using satellite data. Compare their new reconstruction of surface temperature data to independent in-situ observations and reanalysis data.

Cowtan and Way (2013) methods and data are freely available:

Surface temperatures are available from the International Arctic Buoy Programme (IABP) website:

Cowtan and Way (CW2013) reconstruction

  • Review methods of Cowtan and Way (2013)
  • Analyse their reconstructed dataset of surface air temperature (seasonal cycle, anomalies, trends etc.)
  • Look at correlations with climate indices, e.g. ENSO, NAO.

/ProjectA

Variations in Surface Air Temperature Observations in the Arctic

/ProjectB

Data intercomparison

Use the buoy measurements of surface air temperature as ground truth

  • Write code to interpolate the different datasets in a common grid
  • Compare CW2013, buoy and reanalysis data
  • Was the data gap in the Arctic filled in reasonably?
  • Are there biases or jumps in the data?

/ProjectC

HOAPS ocean flux sampling bias

  • HOAPS climatology of ocean surface fluxes

  • HOAPS is sampled twice a day
  • What is the impact of undersampling the dirnal cycle on monthly means?
  • What is the impact of sea ice gaps on monthly means?
  • How do HOAPS surface flux estimates compare to literature values of global mean ocean surface fluxes?

/ProjectD

TODOs

Data

  • CW2013 :-)

  • ERA-Interim :-)

  • NCEP :-)

  • Bouy data :-)

  • HOAPS data :-)

Final report

Template structure:

  • Abstract
  • Introduction: state of the art (literature), statement of the problem
  • Methods and data
  • Results
  • Discussion
  • Conlcusion

References

  • Python at KlimaCampus

  • Python Scripting for Computational Science, Hans Petter Langtangen, Springer (available in the ZMAW library)

Examples from the past

How significant are observations of Arctic temperature trends?

LehreWiki: Climate_and_Satellite_Data_Analysis_2014 (last edited 2014-02-05 09:14:16 by anonymous)