This dataset was first added to LRIS Portal on 30 May 2010.
52ccb2be-ed26-c04a-c49a-8dd4d8c9d61a
en
utf8
dataset
dataset
Fraser Morgan
Landcare Research Ltd
Researcher
09 5744149
09 5744101
Private Bag 92170, Auckland Mail Centre
Auckland
Auckland
1142
nz
morganf@landcareresearch.co.nz
processor
2010-05-27
ISO 19115
2003
2
59600
40800
area
true
GD_1949_New_Zealand_Map_Grid
Mean minimum temperature of the coldest month - LENZ
2003-01-01
Craig Briggs
Landcare Research Ltd
Spatial Analyst
07 8593700
07 8593701
Private Bag 3127
Hamilton
Hamilton
3240
nz
lenz@landcareresearch.co.nz
custodian
mapDigital
Mean minimum temperature of the coldest month data layer used in the creation of Land Environments of New Zealand (LENZ) classification. Mean minimum temperature of the coldest month is recorded in °C. The climate station data used in the development of this climate surface were derived from summaries of climate observations published by the New Zealand Meteorological Service, using data collected over the period from 1950-1980. Estimates of the mean minimum temperature in July, the coldest month of winter, were derived from a surface fitted to monthly estimates of mean daily temperatures. The resulting data layer was created by coupling a 100 m DEM with a thin-plate spline surface fitted to an irregular network of 346 meteorological stations. The resulting 100 metre layer was then interpolated to 25 metres using bilinear interpolation. Additional details such as the climate station locations used in the creation of the layer and error maps are defined in the attached LENZ Technical Guide.
notPlanned
LENZ
Minimum Temperature
Temperature
Climate
Cold
theme
New Zealand
place
Downloadable Data
grid
en
environment
climatologyMeteorologyAtmosphere
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Craig Briggs
Landcare Research Ltd
Spatial Analyst
07 8593700
07 8593701
Private Bag 3127
Hamilton
Hamilton
3240
nz
lenz@landcareresearch.co.nz
distributor
ESRI Binary Grid Raster Dataset
ArcGIS 9.3
128.332
https://lris.scinfo.org.nz/layer/48092-lenz-mean-minimum-temperature-of-the-coldest-month/
dataset
All climate layers used in LENZ were derived either directly or indirectly from mathematical surfaces (thin-plate splines) that use information about the climate, location and elevation of a number of meteorological stations. Locations are described either in terms of their latitude and longitude or their coordinates on a map projection such as the New Zealand Map Grid (NZMG). Each surface is calculated using a process in which data values for each climate station are omitted in turn and its climate is predicted from the surrounding stations. This process is repeated until no further improvement can be made to the fit of the surface to the raw data. Surfaces can be simultaneously fitted to up to 12 variables, typically monthly data for various climate parameters, e.g., monthly estimates of temperature or rainfall. Additional details such as the climate station locations used in the creation of the layer and error maps for this layer are defined in the attached LENZ Technical Guide. Once the surface has been fitted, predictions can be made for any point of known location and elevation. For example, coupling the surface with a digital elevation model, a regular grid of elevation values, allows the generation of digital climate maps as used in the creation of LENZ. Finally, maps that show the standard errors of the predicted values can be derived using results from more sophisticated analyses of the errors associated with the climate surfaces. The majority of the climate station data used in the development of our climate surfaces were derived from summaries of climate observations published by the New Zealand Meteorological Service. Temperature and rainfall data were collected over the period from 1950 to 1980, while data describing humidity and solar radiation consisted of averages of all data collected up until 1980. Some additional short-duration records of rainfall, including information from storage rain gauges, were used to describe geographic variation in high-rainfall mountainous areas of the South Island.
Landcare Data Use License
license