Sentences with phrase «time temperatures over land»

Not exact matches

Pielke, who said one issue ignored in the paper is that land surface temperature measurements over time show bigger warming trends than measurements from higher up in a part of the atmosphere called the lower troposphere, and that still needs more explanation.

«We show that at the present - day warming of 0.85 °C about 18 % of the moderate daily precipitation extremes over land are attributable to the observed temperature increase since pre-industrial times, which in turn primarily results from human influence,» the research team said.

---- It would actually be really interesting to see a series of plots that show how the datasets of measured sea and land temperatures have evolved over time as they have been improved with adjustments such as this.

The temperature at each land and ocean station is compared daily to what is «normal» for that location and time, typically the long - term average over a 30 - year period.

However, over long time periods, the variation of the global average temperature with CO2 concentration depends on various factors such as the placement of the continents on Earth, the functionality of ocean currents, the past history of the climate, the orientation of the Earth's orbit relative to the Sun, the luminosity of the Sun, the presence of aerosols in the atmosphere, volcanic action, land clearing, biological evolution, etc..

The variation over time of the hydrological variables and temperature are shown below for averages over land areas for NW, NE, SW and SE Europe.

The question at which Parker's study was addressed was the question: «Could the global warming apparent in the record of land - based temperatures be due to an increase over time in the local UHI effects?»

· On average, between 1950 and 1993, night - time daily minimum air temperatures over land increased by about 0.2 °C per decade.

The time series uses - an area - weighted average of the surface air temperature over land and the temperature of water at the ocean's surface.

Girma is showing you actual physical observations (warts and all) of the globally and annually average land and sea surface temperature anomaly over time.

See, the first thing to do is do determine what the temperature trend during the recent thermometer period (1850 — 2011) actually is, and what patterns or trends represent «data» in those trends (what the earth's temperature / climate really was during this period), and what represents random «noise» (day - to - day, year - to - random changes in the «weather» that do NOT represent «climate change»), and what represents experimental error in the plots (UHI increases in the temperatures, thermometer loss and loss of USSR data, «metadata» «M» (minus) records getting skipped that inflate winter temperatures, differences in sea records from different measuring techniques, sea records vice land records, extrapolated land records over hundreds of km, surface temperature errors from lousy stations and lousy maintenance of surface records and stations, false and malicious time - of - observation bias changes in the information.)

The same should be true for climate change we should evaluate the changes in temperature (not anomalies) over time at the same stations and present the data as a spaghetti graph showing any differing trends and not assume that regional or climates in gridded areas are the same — which they are not as is obvious from the climate zones that exist or microclimates due to changes in precipitation, land use etc..

However, for changes over time, only anomalies, as departures from a climatology, are used, most commonly based on the area - weighted global average of the sea surface temperature anomaly and land surface air temperature anomaly.

This indicates to me that the rate of energy being added to the oceans has not increased over a longer time period and that there is thus a discrepancy between land and ocean temperature data.

Jones et al. (1990) have assessed the urbanization effects in time series of surface air temperature over land areas in European parts of the CIS, eastern Australia, and eastern China.

Here, we present an explanation for time - invariant land — sea warming ratio that applies if three conditions on radiative forcing are met: first, spatial variations in the climate forcing must be sufficiently small that the lower free troposphere warms evenly over land and ocean; second, the temperature response must not be large enough to change the global circulation to zeroth order; third, the temperature response must not be large enough to modify the boundary layer amplification mechanisms that contribute to making φ exceed unity.

Assessment of Urbanisation effects in Time Series of Surface Air Temperature Over Land.

In the meantime, back in cotton wool land: «Since the time of AR4, neither global mean temperature nor OHU have increased, while the IPCC's own estimate of the post-1750 change in forcing net of OHU has increased by over 60 %.»

I suspect, however, a graph of that might look rather similar to that plot showing global land - ocean temperature increases over time.

McKitrick correlated land temperature trends with economic development / land use change etc. (over longer time scales than 1 year).

Andreas, in the M&M study the dependent variable is the trend is the measured surface temperature over a given time period for suitably defined areas of land surface (i.e. one trend per area).

So Perth sea levels haven't risen by up to 10 mm per year since 1993, they aren't rising three times faster than the global average, land subsidence indicates they've been closer to flat and possibly even fallen since 1993, and the leaked IPCC report confirms they've been as stable as global temperatures for well over a decade.

1990 P.D. Jones, et al., «Assessment of Urbanization Effects in Time Series of Surface Air Temperatures over Land.»